EP1771604A2 - Procede pour produire des surfaces d'oxyde de nickel a conductivite accrue - Google Patents

Procede pour produire des surfaces d'oxyde de nickel a conductivite accrue

Info

Publication number
EP1771604A2
EP1771604A2 EP05772399A EP05772399A EP1771604A2 EP 1771604 A2 EP1771604 A2 EP 1771604A2 EP 05772399 A EP05772399 A EP 05772399A EP 05772399 A EP05772399 A EP 05772399A EP 1771604 A2 EP1771604 A2 EP 1771604A2
Authority
EP
European Patent Office
Prior art keywords
nickel
solution
nickel oxide
hydrogen peroxide
titanium
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Withdrawn
Application number
EP05772399A
Other languages
German (de)
English (en)
Inventor
Roland Beckmann
Karl-Heinz Dulle
Peter Woltering
Randolf Kiefer
Frank Holthuis
Frank Funck
Wolfram Stolp
Hans-Joachim Kohnke
Joachim Helmke
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Gaskatel Gesellschaft fur Gassysteme Durch Kataly
ThyssenKrupp Industrial Solutions AG
Original Assignee
Gaskatel Gesellschaft fur Gassysteme Durch Katalyse und Elektrochemie Mbh
Uhde GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Gaskatel Gesellschaft fur Gassysteme Durch Katalyse und Elektrochemie Mbh, Uhde GmbH filed Critical Gaskatel Gesellschaft fur Gassysteme Durch Katalyse und Elektrochemie Mbh
Publication of EP1771604A2 publication Critical patent/EP1771604A2/fr
Withdrawn legal-status Critical Current

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
    • C25B11/00—Electrodes; Manufacture thereof not otherwise provided for
    • C25B11/04—Electrodes; Manufacture thereof not otherwise provided for characterised by the material
    • C25B11/051—Electrodes formed of electrocatalysts on a substrate or carrier
    • C25B11/055—Electrodes formed of electrocatalysts on a substrate or carrier characterised by the substrate or carrier material
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00—Electrodes
    • H01M4/02—Electrodes composed of, or comprising, active material
    • H01M4/24—Electrodes for alkaline accumulators
    • H01M4/32—Nickel oxide or hydroxide electrodes
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
    • C01G53/00—Compounds of nickel
    • C01G53/04—Oxides
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00—Electrodes
    • H01M4/02—Electrodes composed of, or comprising, active material
    • H01M4/04—Processes of manufacture in general
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00—Electrodes
    • H01M4/02—Electrodes composed of, or comprising, active material
    • H01M4/36—Selection of substances as active materials, active masses, active liquids
    • H01M4/48—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides
    • H01M4/485—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of mixed oxides or hydroxides for inserting or intercalating light metals, e.g. LiTi2O4 or LiTi2OxFy
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00—Electrodes
    • H01M4/02—Electrodes composed of, or comprising, active material
    • H01M4/36—Selection of substances as active materials, active masses, active liquids
    • H01M4/48—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides
    • H01M4/52—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of nickel, cobalt or iron
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00—Electrodes
    • H01M4/86—Inert electrodes with catalytic activity, e.g. for fuel cells
    • H01M4/88—Processes of manufacture
    • H01M4/8817—Treatment of supports before application of the catalytic active composition
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00—Electrodes
    • H01M4/86—Inert electrodes with catalytic activity, e.g. for fuel cells
    • H01M4/88—Processes of manufacture
    • H01M4/8878—Treatment steps after deposition of the catalytic active composition or after shaping of the electrode being free-standing body
    • H01M4/8882—Heat treatment, e.g. drying, baking
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00—Electrodes
    • H01M4/86—Inert electrodes with catalytic activity, e.g. for fuel cells
    • H01M4/90—Selection of catalytic material
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00—Electrodes
    • H01M4/86—Inert electrodes with catalytic activity, e.g. for fuel cells
    • H01M4/90—Selection of catalytic material
    • H01M4/9016—Oxides, hydroxides or oxygenated metallic salts
    • 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
    • Y02E60/10—Energy storage using batteries
    • 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
    • Y02E60/50—Fuel cells

Definitions

  • the present invention relates to a process for the production of conductive nickel oxide surfaces by chemical doping of the nickel oxide with alkali metal oxides, in particular for the use of the nickel in electrochemical applications.
  • Another method is the several hours reduction of a complete electrode.
  • nickel which is in direct contact with carbon
  • the reduction not only leads to the removal of the non-conductive surface, but also to a ner relatively stable connection between the metallic nickel and the carbon material.
  • a disadvantage of this method is that it is not possible, for example, the air electrode - consisting of activated carbon, manganese dioxide and nickel fabric - a fer ⁇ term zinc / air battery for several hours to reduce the hydrogen potential.
  • the conductivity of the nickel is important both for the nickel / cadmium type alkaline rechargeable batteries and for the nickel / metal hydride type rechargeable battery, as described in DE 697 21 136.
  • the incorporation of lithium into nickel is also known, see also DE 691 24 158.
  • a low-temperature process in which an active nickel electrode is improved by treatment in a mixture of KOH, NaOH, BaOH and hydrogen peroxide.
  • the treatment of an active electrode is described - not the treatment of pure, metallic surfaces.
  • the object of the invention is to provide a method which makes it possible to produce conductive nickel oxide surfaces at low temperature by chemical doping of the nickel oxide with alkali oxides.
  • the nickel material is immersed in a solution of 3.5 molar alkali metal hydroxide, mixed with about 10% hydrogen peroxide and stored there for 10 minutes, »the resulting nickel hydroxide surface is dewatered in a subsequent thermi ⁇ rule process
  • the doped nickel oxide surfaces produced in this way are referred to below as Grenzleit ⁇ layers and have excellent conductivity.
  • colloidal carbon or else hydroxides of iron, cobalt, titanium, iridium or platinum are also added during the immersion of the nickel material in the solution of 3.5 molar alkali hydroxide.
  • the method includes driving the used nickel Zulegleiteren of 50 weight percent nium Alumi ⁇ or even 10 percent by weight titanium or both aluminum and titanium simultaneously.
  • Example 1 shows the effect of the nickel surface on the current / voltage characteristics of Air electrodes in alkaline electrolytes on the basis of Rg. 1 and Fig. 2,
  • Example 2 shows the possibilities of doping.
  • Example 1 In Fig. 1 it is plotted what influence the surface of nickel precipitators on the electrochemical load capacity of air electrodes has.
  • a mixture of activated carbon and carbon was prepared as a catalytically active material by a "reactive mixing process.” The mass was subsequently rolled into a metallic arrester. Nickel with a boundary layer and silver is very clearly observed, if a nickel mesh with boundary layer is used instead of the usual nickel mesh, and the performance of the air electrode is comparable to air electrodes on a silver dissipation material.
  • Example 2 Nickel oxide is a known catalyst for the evolution of oxygen. Therefore, a Raney nickel catalyst is often used in electrolysis plants. Now, conditions are known in which the oxygen evolution electrode should have the smallest possible electrolytic resistance. In these cases, the catalyst used to date is a coated nickel mesh with iridium oxide.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Inorganic Chemistry (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Thermal Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Composite Materials (AREA)
  • Metallurgy (AREA)
  • Inert Electrodes (AREA)
  • Inorganic Compounds Of Heavy Metals (AREA)
  • Electrodes For Compound Or Non-Metal Manufacture (AREA)
  • Hybrid Cells (AREA)
  • Chemical Treatment Of Metals (AREA)
  • Electrolytic Production Of Non-Metals, Compounds, Apparatuses Therefor (AREA)
  • Fuel Cell (AREA)

Abstract

L'invention concerne un procédé servant à produire des surfaces d'oxyde de nickel électroconductrices à partir d'un matériau contenant du nickel. Selon l'invention, la surface de nickel est d'abord dégraissée, puis décapée pendant environ 10 minutes dans une solution d'acide chlorhydrique à environ 1 %, le processus étant accéléré par l'ajout d'une solution de peroxyde d'hydrogène et l'électrolyte prenant une coloration verdâtre. La surface de nickel est alors brièvement mouillée et le matériau à base de nickel est placé dans une solution constituée de lessive alcaline 3,5 molaire, mélangée à environ 10 % de peroxyde d'hydrogène, et y est laissé pendant 10 minutes. La surface d'hydroxyde de nickel ainsi formée est déshydratée lors d'un processus thermique subséquent, puis est oxydée en oxyde de nickel. L'invention concerne également la couche conductrice limite produite selon ce procédé, les électrodes contenant cette couche conductrice limite, ainsi que l'utilisation de ces électrodes dans des procédés d'électrolyse à l'alcali et au chlore, dans des piles à combustible et dans des accumulateurs.
EP05772399A 2004-07-19 2005-07-09 Procede pour produire des surfaces d'oxyde de nickel a conductivite accrue Withdrawn EP1771604A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102004034886A DE102004034886A1 (de) 2004-07-19 2004-07-19 Verfahren zur Herstellung von Nickeloxidoberflächen mit erhöhter Leitfähigkeit
PCT/EP2005/007464 WO2006008012A2 (fr) 2004-07-19 2005-07-09 Procede pour produire des surfaces d'oxyde de nickel a conductivite accrue

Publications (1)

Publication Number Publication Date
EP1771604A2 true EP1771604A2 (fr) 2007-04-11

Family

ID=35502611

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05772399A Withdrawn EP1771604A2 (fr) 2004-07-19 2005-07-09 Procede pour produire des surfaces d'oxyde de nickel a conductivite accrue

Country Status (10)

Country Link
US (1) US8057713B2 (fr)
EP (1) EP1771604A2 (fr)
JP (1) JP4746618B2 (fr)
KR (1) KR20070040794A (fr)
CN (1) CN1997774A (fr)
BR (1) BRPI0513480A (fr)
CA (1) CA2574170A1 (fr)
DE (1) DE102004034886A1 (fr)
RU (1) RU2383659C2 (fr)
WO (1) WO2006008012A2 (fr)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102011008163A1 (de) 2011-01-10 2012-07-12 Bayer Material Science Ag Beschichtung für metallische Zellelement-Werkstoffe einer Elektrolysezelle
JP2015086420A (ja) * 2013-10-29 2015-05-07 国立大学法人横浜国立大学 アルカリ水電解用陽極
CN110952111A (zh) * 2019-10-31 2020-04-03 南通安思卓新能源有限公司 一种两步氧化合成的电解水阳极及其制备方法
RU2758442C1 (ru) * 2020-12-08 2021-10-28 Федеральное государственное бюджетное учреждение науки Институт проблем химической физики Российской Академии наук (ФГБУН ИПХФ РАН) Композитный катодный материал и способ его получения
CN115044862B (zh) * 2022-06-17 2023-03-10 长沙特耐金属材料科技有限公司 一种镍基合金表面硬化方法
TWI910454B (zh) * 2023-08-07 2026-01-01 翔名科技股份有限公司 抗腐蝕鎳基合金的表面處理方法及其結構
CN117758195A (zh) * 2023-12-27 2024-03-26 湖北振华化学股份有限公司 一种提高镍及镍基合金在含氧高浓度碱溶液中耐蚀性的方法
CN117758196A (zh) * 2023-12-27 2024-03-26 湖北振华化学股份有限公司 一种提高镍基合金在含氧高浓度碱溶液中耐蚀性的方法

Family Cites Families (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE8305885U1 (de) * 1983-03-02 1997-07-24 Faber, Matthias, Dipl.-Ing., 63755 Alzenau Neuartige Nickelelektrode zum Einsatz in alkalischen, elektrochemischen Energiespeichersystemen
JPS6074272A (ja) * 1983-09-30 1985-04-26 Agency Of Ind Science & Technol 溶融炭酸塩型燃料電池の製造方法
EP0297316B1 (fr) * 1987-07-01 1992-01-22 Messerschmitt-Bölkow-Blohm Gesellschaft mit beschränkter Haftung Dispositif pour l'amenée de courant dans une anode poreuse d'une plaque bipolaire faisant partie d'un empilage de cellules du type filtre-presse
EP0354966B1 (fr) * 1988-01-22 1996-06-12 Japan Storage Battery Company Limited Batterie d'accumulateurs alcalins et procede de production
US5264201A (en) 1990-07-23 1993-11-23 Her Majesty The Queen In Right Of The Province Of British Columbia Lithiated nickel dioxide and secondary cells prepared therefrom
IT1247908B (it) * 1991-05-08 1995-01-05 Eniricerche Spa Elettrodo di ossido di nichel intercalato con litio e dispositivi elettrocromici che lo incorporano
JP3289358B2 (ja) * 1993-01-28 2002-06-04 株式会社村田製作所 磁性酸化物粉末の製造方法
JP3664519B2 (ja) * 1995-05-29 2005-06-29 クロリンエンジニアズ株式会社 活性陰極の製造方法
US6007946A (en) * 1996-06-26 1999-12-28 Sanyo Electric Co., Ltd. Non-sintered nickel electrode for alkaline storage battery, alkaline storage battery including the same, and method for production of non-sintered nickel electrode for alkaline storage battery
US5905000A (en) * 1996-09-03 1999-05-18 Nanomaterials Research Corporation Nanostructured ion conducting solid electrolytes
RU2148284C1 (ru) * 1998-07-23 2000-04-27 Открытое акционерное общество "Сатурн" Способ изготовления оксидно-никелевого электрода щелочного аккумулятора
US6586483B2 (en) * 2001-01-08 2003-07-01 3M Innovative Properties Company Foam including surface-modified nanoparticles
JP2003045420A (ja) * 2001-07-30 2003-02-14 Hitachi Maxell Ltd 非焼結式正極、その製造方法および前記正極を用いたアルカリ蓄電池
JP2003045422A (ja) * 2001-07-30 2003-02-14 Hitachi Maxell Ltd アルカリ蓄電池
JP2003068293A (ja) * 2001-08-23 2003-03-07 Hitachi Maxell Ltd 非焼結式正極、その製造方法および前記正極を用いたアルカリ蓄電池
RU2224336C2 (ru) * 2002-01-28 2004-02-20 Федеральное государственное унитарное предприятие УРАЛЬСКИЙ ЭЛЕКТРОХИМИЧЕСКИЙ КОМБИНАТ Оксидно-никелевый электрод и способ его изготовления
JP3884768B2 (ja) * 2002-06-21 2007-02-21 日立マクセル株式会社 電気化学素子用の電極およびこれを用いた電池
JP4286220B2 (ja) * 2002-08-28 2009-06-24 東邦チタニウム株式会社 金属ニッケル粉末及びその製造方法

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2006008012A2 *

Also Published As

Publication number Publication date
WO2006008012A2 (fr) 2006-01-26
RU2007105880A (ru) 2008-08-27
US8057713B2 (en) 2011-11-15
KR20070040794A (ko) 2007-04-17
DE102004034886A1 (de) 2006-02-16
CN1997774A (zh) 2007-07-11
CA2574170A1 (fr) 2006-01-26
WO2006008012A3 (fr) 2006-06-22
JP2008506845A (ja) 2008-03-06
BRPI0513480A (pt) 2008-05-06
RU2383659C2 (ru) 2010-03-10
JP4746618B2 (ja) 2011-08-10
US20080280204A1 (en) 2008-11-13

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Inventor name: HELMKE, JOACHIM

Inventor name: WOLTERING, PETER

Inventor name: KIEFER, RANDOLF

Inventor name: HOLTHUIS, FRANK

Inventor name: FUNCK, FRANK

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Owner name: THYSSENKRUPP UHDE GMBH

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