EP3775323A1 - Procede electrochimique de production d'hydrogene gazeux sous pression par electrolyse puis par depolarisation - Google Patents
Procede electrochimique de production d'hydrogene gazeux sous pression par electrolyse puis par depolarisationInfo
- Publication number
- EP3775323A1 EP3775323A1 EP19720962.0A EP19720962A EP3775323A1 EP 3775323 A1 EP3775323 A1 EP 3775323A1 EP 19720962 A EP19720962 A EP 19720962A EP 3775323 A1 EP3775323 A1 EP 3775323A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- electrolyte
- cathode
- ions
- anode
- hydrogen
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
- C25B1/00—Electrolytic production of inorganic compounds or non-metals
- C25B1/01—Products
- C25B1/02—Hydrogen or oxygen
- C25B1/04—Hydrogen or oxygen by electrolysis of water
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
- C25B11/00—Electrodes; Manufacture thereof not otherwise provided for
- C25B11/04—Electrodes; Manufacture thereof not otherwise provided for characterised by the material
- C25B11/042—Electrodes formed of a single material
- C25B11/046—Alloys
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
- C25B5/00—Electrogenerative processes, i.e. processes for producing compounds in which electricity is generated simultaneously
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
- C25B9/00—Cells or assemblies of cells; Constructional parts of cells; Assemblies of constructional parts, e.g. electrode-diaphragm assemblies; Process-related cell features
- C25B9/17—Cells comprising dimensionally-stable non-movable electrodes; Assemblies of constructional parts thereof
- C25B9/19—Cells comprising dimensionally-stable non-movable electrodes; Assemblies of constructional parts thereof with diaphragms
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25C—PROCESSES FOR THE ELECTROLYTIC PRODUCTION, RECOVERY OR REFINING OF METALS; APPARATUS THEREFOR
- C25C1/00—Electrolytic production, recovery or refining of metals by electrolysis of solutions
- C25C1/06—Electrolytic production, recovery or refining of metals by electrolysis of solutions or iron group metals, refractory metals or manganese
- C25C1/08—Electrolytic production, recovery or refining of metals by electrolysis of solutions or iron group metals, refractory metals or manganese of nickel or cobalt
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25C—PROCESSES FOR THE ELECTROLYTIC PRODUCTION, RECOVERY OR REFINING OF METALS; APPARATUS THEREFOR
- C25C1/00—Electrolytic production, recovery or refining of metals by electrolysis of solutions
- C25C1/16—Electrolytic production, recovery or refining of metals by electrolysis of solutions of zinc, cadmium or mercury
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25C—PROCESSES FOR THE ELECTROLYTIC PRODUCTION, RECOVERY OR REFINING OF METALS; APPARATUS THEREFOR
- C25C1/00—Electrolytic production, recovery or refining of metals by electrolysis of solutions
- C25C1/06—Electrolytic production, recovery or refining of metals by electrolysis of solutions or iron group metals, refractory metals or manganese
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25C—PROCESSES FOR THE ELECTROLYTIC PRODUCTION, RECOVERY OR REFINING OF METALS; APPARATUS THEREFOR
- C25C1/00—Electrolytic production, recovery or refining of metals by electrolysis of solutions
- C25C1/14—Electrolytic production, recovery or refining of metals by electrolysis of solutions of tin
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25C—PROCESSES FOR THE ELECTROLYTIC PRODUCTION, RECOVERY OR REFINING OF METALS; APPARATUS THEREFOR
- C25C1/00—Electrolytic production, recovery or refining of metals by electrolysis of solutions
- C25C1/18—Electrolytic production, recovery or refining of metals by electrolysis of solutions of lead
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25C—PROCESSES FOR THE ELECTROLYTIC PRODUCTION, RECOVERY OR REFINING OF METALS; APPARATUS THEREFOR
- C25C1/00—Electrolytic production, recovery or refining of metals by electrolysis of solutions
- C25C1/20—Electrolytic production, recovery or refining of metals by electrolysis of solutions of noble metals
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25C—PROCESSES FOR THE ELECTROLYTIC PRODUCTION, RECOVERY OR REFINING OF METALS; APPARATUS THEREFOR
- C25C1/00—Electrolytic production, recovery or refining of metals by electrolysis of solutions
- C25C1/22—Electrolytic production, recovery or refining of metals by electrolysis of solutions of metals not provided for in groups C25C1/02 - C25C1/20
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/36—Hydrogen production from non-carbon containing sources, e.g. by water electrolysis
Definitions
- the field of the invention is that of the electrochemical production of gaseous hydrogen under pressure.
- the invention relates to an electrochemical process for producing gaseous hydrogen by electrolysis and electrochemical conversion of H + ions to gaseous hydrogen by depolarization.
- the invention also relates to a device for the implementation of such a process for producing hydrogen, and a kit comprising the device and all or part of consumables useful in said method.
- Hydrogen is the cleanest and most efficient fuel for producing energy both in a fuel cell and in an internal combustion engine.
- the storage of energy in the form of hydrogen under pressure is also particularly advantageous.
- Hydrogen is an invisible gas that is odorless and non-toxic. Its consumption in a fuel cell produces only electrical energy and water, while its combustion does not lead to harmful by-products.
- the most economical and therefore most widely used method of producing hydrogen is the reforming of natural gas to steam.
- hydrogen appears to be the most appropriate energy carrier to support the energy transition, in particular to allow clean mobility as well as energy storage.
- hydrogen must be made from electricity and water: these are conventional alkaline or solid electrolyte proton exchange membrane (Proton Exchange Membrane) electrolysis processes, or developing such that high temperature electrolysis.
- the use of hydrogen in the context of clean mobility requires the ability to store hydrogen under pressure in tanks on board vehicles, at high pressures ranging from 200 to 700 bar.
- the conventional method is to compress the gas with a mechanical compressor; it is an expensive operation that requires many maintenance operations.
- patent application US20040211679A1 describes a method of performing electrochemical compression at the output of the electrolyser, in a second apparatus.
- This technical proposal has the drawback of making the production process more complex, and therefore more expensive.
- the constraint of simultaneous management of oxygen and hydrogen specific to the electrolysis of water, could be annihilated in the process according to the patent FR2948654B1.
- This method indeed provides a decoupled electrolysis in two steps.
- a metal salt (zinc, nickel or manganese) is used in an electrolytic cell to decouple the electrolysis reaction from water in two steps.
- the method makes it possible to store electricity by depositing a metal on the cathode and releasing oxygen at the anode of the electrolytic cell.
- the electrolytic cell operates in battery mode, allowing the dissolution of said metal and the production of hydrogen. This process is used to store electricity and return it as hydrogen.
- the present invention aims to satisfy at least one of the objectives set out below.
- One of the essential objectives of the present invention is to provide an improved method of producing gaseous hydrogen gas under electrochemically pressure, in a decoupled manner, to achieve high hydrogen gas pressures for example> 80 bar.
- One of the essential objectives of the present invention is to provide an improved method of producing gaseous hydrogen gas electrochemically under pressure, without decoupling, and without sacrificing industrial safety requirements.
- One of the essential objectives of the present invention is to provide an improved and economical process for the electrochemically generated production of gaseous hydrogen gas in a decoupled manner.
- One of the essential objectives of the present invention is to provide an improved method of producing gaseous hydrogen under pressure electrochemically, decoupled and in compliance with environmental constraints.
- One of the essential objectives of the present invention is to provide an improved method for the production of gaseous hydrogen gas under electrochemical pressure in a decoupled manner and whose implementation is possible in a non-industrial and non-controlled environment. specialized operators, that is to say on a gaseous hydrogen distribution site, completely autonomously.
- One of the essential objectives of the present invention is to provide an industrial device, reliable, efficient, economical and robust, for the implementation of the method as referred to in one of the above objectives.
- an electrochemical process for producing gaseous hydrogen under pressure characterized in that it essentially consists in implementing, in at least one enclosure, at least one electrolysis step É of an electrolyte comprising at least one solvent, preferably aqueous, this electrolysis step É converting electrical energy into chemical energy, with production of gaseous oxygen in an enclosure E and least one step of conversion C ° of this chemical energy into a redox energy with production of hydrogen gas in a closed chamber C °, identical or different, preferably identical, to the enclosure E ? ;
- the electrolyte comprises ions M m + , M corresponding to the redox couple (M m + / M), and ions A + of at least one depolarization additive A corresponding to a redox couple (A a + / A) with: the absolute value of the overvoltage of the hydrogen evolution reaction on the metal M is greater than the difference E th (H + / H 2 ) -E th (M m + / M) in an acid medium or E th (H 2 0 / H 2 ) - E th (M m + / M) in basic medium;
- n is an integer; preferably between -5 and 5, and more preferably between -4 and 4;
- a is an integer; preferably between -5 and 5, and more preferably between -4 and 4;
- the absolute value of the overvoltage of the hydrogen evolution reaction on the metal A is less than the difference E th (H + / H 2 ) - E (M m + / M) in an acid medium or E th (H 2 0 / H 2 ) - E th (M m + / M) in basic medium;
- Electrolysis step E ? is started by current supply between the anode and the cathode;
- a a + and M m + are respectively deposited as A and M on the cathode during the electrolysis step E ? and gaseous oxygen is evolved at the anode;
- Electrolysis step E ? is stopped by cutting off the power supply between the anode and the cathode;
- the gaseous hydrogen thus produced is collected, preferably under a pressure p Hyd ; -> This hydrogen gas thus collected is possibly stored outside the enclosure.
- the process according to the invention is particularly efficient and advantageous in that it consists in carrying out an electrochemical compression integrated into the electrolysis of an electrolyte, preferably aqueous, and, more preferably still water, so as to directly produce water.
- hydrogen at a very high pressure decoupled by means of an intermediate vector consisting of a Redox couple (M m + / M) in the presence of the depolarizing agent (A a + / A), in 2 independent steps: electrolysis with evolution of oxygen then oxidation of M to M m + and of A to A + with release of hydrogen.
- M is a metal compound consisting of at least one metal and / or at least one compound based on at least one metal, for example a metal oxide.
- the process according to the invention makes it possible to reach hydrogen pressures greater than 80 bar. This is a minimum to reach to consider large-scale applications in the field of mobility (transport).
- the method according to the invention and more generally the system according to the invention which comprises the method and the device perfectly integrates this safety constraint.
- the present invention relates to a device for implementing the method.
- This device comprises:
- This simple and effective device has particular interest to include one or more enclosures each comprising at least one electrochemical cell including only, preferably, a cathode and an anode. This simplicity makes it possible to consider relatively relatively the multiplication of unit electrochemical cells in order to produce large quantities of hydrogen in a minimum of space.
- Another object of the invention relates to a kit for carrying out the method comprising a device and at least a part of the components for the preparation of the electrolyte or electrolytes intended to be contained in the enclosure or the enclosures of the device .
- any singular denotes indifferently a singular or a plural.
- E ° standard potential.
- the standard potentials E ° referred to in this presentation are all measured under the same conditions (reference, temperature, concentrations).
- the electrochemical compression specific to the process according to the invention is integrated in a decoupled and independent 2-step process, namely, on the one hand, electrolysis É of the electrolyte (preferably an aqueous solution), and, d on the other hand, an oxidation reaction of the species deposited at the cathode during the electrolysis, concomitantly with the production of hydrogen by reduction of the H + ions contained in the electrolyte.
- electrolysis É of the electrolyte preferably an aqueous solution
- an oxidation reaction of the species deposited at the cathode during the electrolysis concomitantly with the production of hydrogen by reduction of the H + ions contained in the electrolyte.
- the invention uses, inter alia, the property of metals or alloys M selected according to the invention, to block the evolution of hydrogen, when electrolysis of their salts M n + . It is the phenomenon called hydrogen overvoltage, leading to an electrochemical state out of equilibrium.
- the electrolysis step E of the electrolyte carried out in the presence of these salts M n + leads to an oxygen evolution at the anode, a deposit of the metal M at the cathode and an energy accumulation corresponding to the non-equilibrium state.
- step C ° of electrochemical conversion, a return to equilibrium makes it possible to release hydrogen.
- the metal (or alloy) M is oxidized to the salt of M n + .
- the hydrogen gas is evolved by releasing the energy accumulated during the electrolysis step E.
- One of the keys to the present invention is the addition of chemical elements in the form of ions or A + molecules in the electrolyte before the electrolysis step E.
- This depolarization additive formed by the Redox couple (A a + / A) makes it possible to achieve the return to equilibrium proper to the step C ° and thus this evolution of hydrogen during this step C °, without using an electrode. hydrogen.
- This implementation of at least one depolarization additive contributes to the control of the kinetics through the concentrations of the ionic species A a + and M m + introduced into the electrolyte. The concentrations can be adjusted according to the application.
- step E1 the ion or molecule A + is co-deposited in metallic form A with the metal M during step E1.
- step E ? is stopped when the local depolarization effects appear.
- step C ° the local depolarization effects are formed between A, M and the H + ions, which accelerates the dissolution of the metal M and the evolution of hydrogen.
- the electrolyte is preferably an acidic or basic aqueous solution, or an ionic liquid.
- the electrolyte is an aqueous saline solution further comprising at least one acid or a Bronsted base, the counterion of which is preferably identical to the ion of salt M and / or of A.
- the M + ions of the electrolyte are preferably ions of a single metal M.
- M is a metal, preferably chosen from the group comprising - ideally consisting of -: Zn, Cd, Sn, Ni, Mn, Fe, Pb, Co, Hg, their alloys and their mixtures ; Zn being particularly preferred.
- the ions of the metal M are introduced into the electrolyte by at least one precursor, preferably chosen from the group comprising - ideally consisting of -: salts, in particular sulphates, oxides, nitrates, chlorides, citrates, phosphates, carbonates, fluorides, bromides, oxides, aqueous solutions of alkali metal or alkaline earth metal hydroxides and mixtures thereof.
- a precursor preferably chosen from the group comprising - ideally consisting of -: salts, in particular sulphates, oxides, nitrates, chlorides, citrates, phosphates, carbonates, fluorides, bromides, oxides, aqueous solutions of alkali metal or alkaline earth metal hydroxides and mixtures thereof.
- the metal M is chosen so that it can be deposited during the electrolysis step E on the cathode, with the electrolyte in question, with the best possible yield.
- the electrolyte also contains A + ions, preferably a single metal A.
- A is different from M.
- a and M are distinguished from each other not only by their chemical nature but also by the thermodynamic electrochemical potentials E th of their respective redox pairs, which satisfy the inequalities mentioned above.
- A is a metal preferably selected from the group consisting of - ideally consisting of - Fe, Co, Sn, Ni, Ta, Mo, W, Pd, Rh, In, Ge, their alloys and their mixtures; Fe and Ni being particularly preferred.
- the ions of the depolarization additive A are introduced into the electrolyte by at least one precursor, preferably chosen from the group comprising - ideally consisting of -: salts, in particular sulphates , oxides, cyanates, phosphates, ammonia, nitrates, chlorides, hydrated ions, complex ions, and mixtures thereof; and more preferably still, among the complex ions in oxygenated, cyanurea, ammoniated or fluorosilicic form, and mixtures thereof.
- salts in particular sulphates , oxides, cyanates, phosphates, ammonia, nitrates, chlorides, hydrated ions, complex ions, and mixtures thereof.
- This additive A a + is a chemical element that meets the following criteria:
- thermodynamic potential of the redox couple (A a + / A) is lower than that of the hydrogen evolution reaction:
- the electrolyte is such that the ionic species [in particular H + , OH] that it contains, other than M & A, are not reduced or oxidized during the two steps of the process.
- these species other than M & A do not react electrochemically in a potential window bounded by the voltage of the electrode on which the A / B couple reacts and the voltage of the electrode on which reacts the couple 0 2 / H 2 0 in acid medium or 0 2 / OH in basic medium.
- step E ? At the beginning of step E ? ,
- M m + is present in the electrolyte in a concentration range of between 0.1 and 15 mol / l , preferably between 0.2 and 10 mol / l.
- a a + is present in the electrolyte in a concentration range of between 10 5 and 1 mol.L 1 , preferably between 10 4 and 10 1 mol.L 1 .
- the electrolysis step E and the conversion step C ° are carried out in at least one electrochemical cell, which comprises an enclosure Et ° containing the electrolyte in which at least one cathode and at least one anode are immersed.
- M m + and A a + are reduced to M & A and are deposited on the cathode.
- each enclosure E comprises at least one cathode and at least one anode.
- the DC power supply delivers a current density i (A / m 2 ) of between 100 and 5000, preferably 200 and 3000, and more preferably still 400 and 2000.
- the cathode is made from a material allowing the deposition of the metal M with a Faraday yield of at least 30%, preferably at least 50%, this material being of Preferably selected from the group of metals and / or metal alloys, comprising and ideally composed of: Al, Pb and Pb alloys, carbon, nickel, and / or iron materials, stainless steels, and the like. combinations of these materials.
- the anode is either made from a material selected from the group of metals and / or metal alloys, comprising and ideally composed of: Pb and Pb alloys, in particular Pb-Ag-Ca alloys or Pb-Ag, steels, iron, nickel; and the combinations of these materials, either consists of a dimensionally stable anode Dimensionally Stable Anode (DSA), or at least one oxide.
- Pb and Pb alloys in particular Pb-Ag-Ca alloys or Pb-Ag, steels, iron, nickel
- DSA Dimensionally Stable Anode
- the interface between the undissolved gas phase G and the liquid phase L - hereinafter referred to as the G / L- interface is increased at least during step C °, so as to accelerate the diffusion of the liquid phase to the gaseous phase, dissolved hydrogen which can oversaturate the electrolyte.
- This provision has the effect of remedying what limits the production of hydrogen gas, namely, on the one hand the solubilization of hydrogen in the electrolyte, in particular in the electrolyte formed by an aqueous solution containing ions as well as H + or OH ions and, on the other hand, the supersaturation of the electrolyte in dissolved hydrogen.
- the increase of the interface is carried out by implementing at least one of the following operations:
- the forced circulation which preferably consists in generating an electrolyte flow in the enclosure E ⁇ C ° or C °, more preferably, using at least one pump so as to evacuate and renew the gas bubbles present on the electrode or the electrodes and on any roughness of the enclosure E ⁇ C ° or C °;
- At least one heating, preferably at least one localized heating, of the electrolyte which advantageously consists in locally reducing the solubility of the dissolved hydrogen gas, thereby promoting the nucleation of bubbles,
- At least one depolarization preferably at least one localized depolarization of the electrolyte, for locally increasing the supersaturation and promoting the formation of bubbles
- the present invention relates to a preferred device for the first mode of implementation, which comprises:
- this evacuation duct preferably subdivided, on the one hand, into at least one duct intended for the evacuation of the gaseous oxygen possibly in mixture with hydrogen gas and, secondly, in at least one conduit for the evacuation of hydrogen gas; each of these ducts being equipped with at least one valve;
- g) optionally means for circulating the electrolyte in the enclosure; h) optionally means for heating the electrolyte in the enclosure.
- the present invention also relates to a kit for implementing the method.
- This kit is characterized in that it comprises:
- This kit which forms a packaging unit for sale, may also include an explanatory note for the implementation of the method using the device and components contained in this kit.
- FIG. 1 is a schematic representation of the device for implementing the method according to the invention
- FIG. 2 is a straight cross-section along the line II-II of FIG.
- the device represented in these figures comprises a high-pressure chamber 1, inside which are disposed an anode 2 and a cathode 3, which are immersed in an electrolyte 4.
- This enclosure 1 is a closed chamber provided with a conduit 5 of gas outlet, which conduit is subdivided into a pipe 6 for evacuation of hydrogen gas and a pipe 7 for evacuation of gaseous oxygen.
- Each duct 6,7 is equipped with a valve 8,9, respectively H 2 valve and 0 2 valve, allowing the independent extraction of these 2 gases out of the chamber 1 high pressure.
- the anode 2 and the cathode 3 are connected to a DC generator 10, able to feed them to induce electrolysis.
- Heating means 11 of the chamber 1 are shown schematically in FIG.
- the chamber 1, the anode 2, the cathode 3 and the electrolyte 4 form an electrolytic cell.
- this cell can be multiplied to increase the production capacity.
- An electrode on which the deposition of the metal (cathode), made of aluminum (reference EN AW 1050A H14 (Al> 99.5%)) takes place;
- An electrode on which oxygen (anode) is released made of lead-silver-calcium alloy (JL Goslar);
- Electrolyte 4 is composed of zinc ions - metal M - (concentration 1.5 mol.L 1 ), sulfuric acid (1.5 mol.L 1 ) and iron sulfate salt - ion A ++ - (8.4 x 10 4 mol.L 1 ). The temperature is set at 30 ° C.
- Electrolyte 4 is prepared by mixing 15.84 kg of sulfuric acid (37.5%, Brenntag) in 7.085 L of deionized water and then adding to this mixture 2.44 kg of ZnO (99.9%, Brenntag). . 4.7 g of iron sulfate heptahydrate (99%, Sigma Aldrich) are finally added to this solution.
- the two electrodes 2 and 3 are immersed in the electrolyte 4.
- the oxygen valve 9 is open, and the hydrogen valve 8 is closed.
- the generator 10 delivers a current density of 595 A / m 2 for 2 hours, which makes it possible to deposit 653 g of metal M: zinc on the cathode (with a yield of 90%).
- the iron (depolarization additive A) co-deposits with the cathode 3.
- the oxygen leaves the chamber 1 via the outlet duct 5 and the duct 7 whose valve 9 is in the open position.
- the power supply 10 is stopped and the hydrogen begins to form.
- the H 2 gas leaving enclosure 1 initially contains oxygen and hydrogen; this mixture is sent via the outlet pipe 5 and the pipe 7 whose valve 9 is in the open position, while the valve 8 of the pipe 6 to H 2 is closed, in a capacity that allows this mixture to be diluted with another gas (argon for example).
- a sensor 0 2 located in the pipe 7 allows to measure in real time the content of O 2 in the gas.
- the valve 9 is closed.
- the pressure of the hydrogen P Hyd produced in the chamber 1 increases as and when the generation of the gas.
- the valve 8 is opened and the hydrogen is sent, via the outlet duct 5 and the duct 6, to a tank not shown in FIG. 1.
- the pressure P Hyd inside of the chamber 1 is measured using a pressure sensor.
- the hydrogen evolution rate is 29 g / h / m 2 , and it takes 24 hours to produce 20 g of hydrogen at 80 bar.
- An electrochemical cell has been used to produce hydrogen at atmospheric pressure.
- the cell contains two compartments, separated by a diaphragm made of polyester.
- the first compartment contains the electrode which acts as a cathode when the st step, and a solution called catholyte (1 L).
- the second compartment contains the electrode which acts as anode during the 1st stage, and a solution called anolyte (1 L).
- Two circulation systems each driven by a pump, make it possible to renew the electrolytes at a circulation speed of 20 mL / min. Description of the operating conditions:
- the two electrodes are connected to a power supply which supplies a current of 10.9 A.
- the manganese is deposited on the cathode, and oxygen is evolved at the anode.
- Cobalt acts as a depolarizing additive; it is co-deposited with manganese at the cathode.
- the power supply is cut off and the hydrogen starts to emerge on the stainless steel electrode.
- manganese oxidizes to Mn 2+ ions and cobalt to Co 2+ ions.
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Electrolytic Production Of Non-Metals, Compounds, Apparatuses Therefor (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR1852883A FR3079529B1 (fr) | 2018-04-03 | 2018-04-03 | Procede electrochimique de production d'hydrogene gazeux sous pression par electrolyse puis par depolarisation |
| PCT/FR2019/050772 WO2019193280A1 (fr) | 2018-04-03 | 2019-04-03 | Procede electrochimique de production d'hydrogene gazeux sous pression par electrolyse puis par depolarisation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP3775323A1 true EP3775323A1 (fr) | 2021-02-17 |
Family
ID=63896235
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP19720962.0A Withdrawn EP3775323A1 (fr) | 2018-04-03 | 2019-04-03 | Procede electrochimique de production d'hydrogene gazeux sous pression par electrolyse puis par depolarisation |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US20210123145A1 (fr) |
| EP (1) | EP3775323A1 (fr) |
| JP (1) | JP2021520451A (fr) |
| FR (1) | FR3079529B1 (fr) |
| WO (1) | WO2019193280A1 (fr) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115087763A (zh) * | 2020-02-12 | 2022-09-20 | 约瑟夫·彼得·马塞达 | 新型电化学电池、叠堆、模块和系统 |
| FR3111918B1 (fr) | 2020-06-30 | 2023-01-20 | Total Sa | Dispositif d’électrolyse de l’eau pour la production d’hydrogène |
| FR3128456B1 (fr) * | 2021-10-22 | 2024-03-01 | Ergosup | Procédé de production d’hydrogène sous pression par électrolyse de l’eau découplée |
| US20230366106A1 (en) * | 2022-05-11 | 2023-11-16 | Nooter/Eriksen, Inc. | Hydrogen generation and chemical energy storage |
| FR3142469A1 (fr) * | 2022-11-30 | 2024-05-31 | C3 Chaix Et Associes, Consultants En Technologie | Procédé et installation de production de dihydrogène par activation catalytique |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH672142A5 (fr) | 1985-07-17 | 1989-10-31 | Metkon Sa | |
| DE29622000U1 (de) | 1996-12-19 | 1997-02-13 | Mtu Motoren- Und Turbinen-Union Friedrichshafen Gmbh, 88045 Friedrichshafen | Druckwassergekapselter Elektrolyseur |
| US20040211679A1 (en) | 2002-03-07 | 2004-10-28 | Wong Terrance Y.H. | Electrochemical hydrogen compressor |
| US20050042150A1 (en) * | 2003-08-19 | 2005-02-24 | Linnard Griffin | Apparatus and method for the production of hydrogen |
| US20060180464A1 (en) * | 2003-08-19 | 2006-08-17 | Linnard Griffin | Apparatus and method for the controllable production of hydrogen at an accelerated rate |
| FR2948654B1 (fr) * | 2009-07-30 | 2015-01-16 | Gerkaro | Cogeneration d'energie electrique et d'hydrogene |
| GB201119283D0 (en) | 2011-11-08 | 2011-12-21 | Univ Glasgow | Apparatus and methods for the electrochemical generation of oxygen and/or hydrogen |
| JP2017020053A (ja) * | 2013-10-17 | 2017-01-26 | 株式会社日立製作所 | 水電気分解装置およびそれを用いたエネルギー貯蔵・供給システム |
| FR3025055B1 (fr) * | 2014-08-19 | 2016-08-26 | Jomi Leman | Dispositif electrochimique pour le stockage de l'energie electrique et la production d'hydrogene, et procede de production d'hydrogene |
| GB201416062D0 (en) | 2014-09-11 | 2014-10-29 | Univ The Glasgow | Hydrogen generation |
| CN105734600B (zh) | 2016-03-19 | 2018-07-24 | 复旦大学 | 一种三电极体系双电解槽两步法电解水制氢的装置及方法 |
-
2018
- 2018-04-03 FR FR1852883A patent/FR3079529B1/fr active Active
-
2019
- 2019-04-03 WO PCT/FR2019/050772 patent/WO2019193280A1/fr not_active Ceased
- 2019-04-03 JP JP2021503213A patent/JP2021520451A/ja active Pending
- 2019-04-03 EP EP19720962.0A patent/EP3775323A1/fr not_active Withdrawn
- 2019-04-03 US US17/041,473 patent/US20210123145A1/en not_active Abandoned
Also Published As
| Publication number | Publication date |
|---|---|
| JP2021520451A (ja) | 2021-08-19 |
| FR3079529A1 (fr) | 2019-10-04 |
| FR3079529B1 (fr) | 2024-04-26 |
| US20210123145A1 (en) | 2021-04-29 |
| WO2019193280A1 (fr) | 2019-10-10 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| WO2019193280A1 (fr) | Procede electrochimique de production d'hydrogene gazeux sous pression par electrolyse puis par depolarisation | |
| EP2460219B1 (fr) | Procédé de co-génération d'énergie électrique et d'hydrogène | |
| EP3775324A1 (fr) | Procede electrochimique de production d'hydrogene gazeux sous pression par electrolyse puis par conversion electrochimique | |
| EP4276208A2 (fr) | Procédé pour le recyclage de matériaux d'électrode de batterie au lithium | |
| WO2009150352A2 (fr) | Procede de production de composes du type cxhyo2 par reduction de dioxyde de carbone (co2) et/ou de monoxyde de carbone (co) | |
| FR2471676A1 (fr) | Procede et dispositif pour la production electrochimique d'energie | |
| JP2016204698A (ja) | 電解システム及び電解システムを使用する電解方法 | |
| FR2479855A1 (fr) | Procede d'electrolyse de l'acide chlorhydrique, anode perfectionnee et appareil pour une telle electrolyse | |
| WO2013164525A1 (fr) | Systeme d'accumulateurs et piles aluminium air | |
| FR2935398A1 (fr) | Cellule d'electrolyse pour la conversion de chlorure cuivreux dans de l'acide chlorhydrique en chlorure cuivrique et hydrogene gazeux | |
| EP3776716A1 (fr) | Procede et dispositif de stockage et de production d'electricite par voie electrochimique a partir d'hydrogene gazeux, kit comprenant ce dispositif et des consommables | |
| WO2023281002A1 (fr) | Procédé de génération d'hydrogène par électrolyse de l'eau découplée | |
| WO2023046775A1 (fr) | Procédé de génération continue d'hydrogène par électrolyse de l'eau via une une approche découplée | |
| TWI418661B (zh) | 用於電解的鍺烷製程之電極 | |
| EP3773991A1 (fr) | Procede et dispositif de compression electrochimique d'hydrogene gazeux | |
| EP4413625A1 (fr) | Système de pile à combustible | |
| Shenoy et al. | Emerging Magnesium-Air Battery Technology: Electrolyte and Anodic Materials | |
| EP4051630A1 (fr) | Procédé de fabrication d'un carburant à génération d'hydrogène, carburant à génération d'hydrogène obtenu, procédé de production d'hydrogène a partir du carburant, dispositif permettant de mettre en oeuvre le procédé de production, procédé de fonctionnement du dispositif et carburant à base d'hydrogène obtenu par le procédé de production d'hydrogène | |
| US20260066268A1 (en) | Mixed metal air batteries | |
| FR3159177A1 (fr) | Procédé d’élaboration d’un catalyseur pour l’électrolyse d’eau, procédé de fabrication d’une électrode, électrode pour l’électrolyse d’eau et son utilisation | |
| WO2025106870A1 (fr) | Génération d'hydrogène vert par séparation d'eau en deux étapes assistée par métal pour centrales à hydrogène portables, stations de ravitaillement en hydrogène et autres applications | |
| FR3142469A1 (fr) | Procédé et installation de production de dihydrogène par activation catalytique | |
| WO2023067164A1 (fr) | Systeme electrochimique et procede de production d'hydrogene par electrolyse de l'eau decouplee, comportant une etape de desoxygenation de l'electrolyte | |
| BE882550R (fr) | Procede de formation d'hydrogene | |
| FR2977804A1 (fr) | Procede de traitement d'effluents liquides en milieu chlorure et separation du zinc et du nickel, installation pour sa mise en oeuvre et application aux effluents industriels metalliferes |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: UNKNOWN |
|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE INTERNATIONAL PUBLICATION HAS BEEN MADE |
|
| PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE |
|
| 17P | Request for examination filed |
Effective date: 20201102 |
|
| AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR |
|
| AX | Request for extension of the european patent |
Extension state: BA ME |
|
| DAV | Request for validation of the european patent (deleted) | ||
| DAX | Request for extension of the european patent (deleted) | ||
| 19U | Interruption of proceedings before grant |
Effective date: 20230308 |
|
| 19W | Proceedings resumed before grant after interruption of proceedings |
Effective date: 20241001 |
|
| RAP3 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: ELHYTEC |
|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
|
| 18D | Application deemed to be withdrawn |
Effective date: 20250401 |