CN101226830B - Electrochemical capacitor electrode and manufacturing method thereof - Google Patents
Electrochemical capacitor electrode and manufacturing method thereof Download PDFInfo
- Publication number
- CN101226830B CN101226830B CN2007100946719A CN200710094671A CN101226830B CN 101226830 B CN101226830 B CN 101226830B CN 2007100946719 A CN2007100946719 A CN 2007100946719A CN 200710094671 A CN200710094671 A CN 200710094671A CN 101226830 B CN101226830 B CN 101226830B
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- China
- Prior art keywords
- electrode
- electrochemical capacitor
- capacitor electrode
- binding agent
- active material
- Prior art date
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- 239000003990 capacitor Substances 0.000 title claims abstract description 18
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 9
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 37
- 239000010439 graphite Substances 0.000 claims abstract description 24
- 229910002804 graphite Inorganic materials 0.000 claims abstract description 24
- 239000000126 substance Substances 0.000 claims abstract description 24
- 239000000835 fiber Substances 0.000 claims abstract description 23
- 239000011230 binding agent Substances 0.000 claims abstract description 15
- 238000003756 stirring Methods 0.000 claims abstract description 12
- 239000008367 deionised water Substances 0.000 claims abstract description 5
- 238000005520 cutting process Methods 0.000 claims abstract description 3
- 239000011149 active material Substances 0.000 claims description 17
- 239000006258 conductive agent Substances 0.000 claims description 15
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 11
- 239000011530 conductive current collector Substances 0.000 claims description 8
- 229910000831 Steel Inorganic materials 0.000 claims description 7
- 238000000034 method Methods 0.000 claims description 7
- 239000000203 mixture Substances 0.000 claims description 7
- 239000010959 steel Substances 0.000 claims description 7
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 6
- 229910052799 carbon Inorganic materials 0.000 claims description 6
- 238000007493 shaping process Methods 0.000 claims description 5
- 229910052802 copper Inorganic materials 0.000 claims description 4
- 239000010949 copper Substances 0.000 claims description 4
- 229910021641 deionized water Inorganic materials 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 4
- 229910052759 nickel Inorganic materials 0.000 claims description 4
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 4
- 238000007789 sealing Methods 0.000 claims description 4
- 229910001220 stainless steel Inorganic materials 0.000 claims description 4
- 239000010935 stainless steel Substances 0.000 claims description 4
- BFKJFAAPBSQJPD-UHFFFAOYSA-N tetrafluoroethene Chemical compound FC(F)=C(F)F BFKJFAAPBSQJPD-UHFFFAOYSA-N 0.000 claims description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 4
- 229910021393 carbon nanotube Inorganic materials 0.000 claims description 3
- 239000002041 carbon nanotube Substances 0.000 claims description 3
- -1 polytetrafluoroethylene Polymers 0.000 claims description 3
- 238000004080 punching Methods 0.000 claims description 3
- 239000004966 Carbon aerogel Substances 0.000 claims description 2
- 239000006229 carbon black Substances 0.000 claims description 2
- 239000011889 copper foil Substances 0.000 claims description 2
- 239000011888 foil Substances 0.000 claims description 2
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 2
- 238000004804 winding Methods 0.000 claims description 2
- 239000003795 chemical substances by application Substances 0.000 abstract 3
- 230000005518 electrochemistry Effects 0.000 abstract 2
- 239000002994 raw material Substances 0.000 description 8
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical group C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 7
- 239000000839 emulsion Substances 0.000 description 4
- 229920000049 Carbon (fiber) Polymers 0.000 description 3
- 239000004917 carbon fiber Substances 0.000 description 3
- 235000013162 Cocos nucifera Nutrition 0.000 description 2
- 244000060011 Cocos nucifera Species 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000004146 energy storage Methods 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 239000004743 Polypropylene Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 239000007772 electrode material Substances 0.000 description 1
- 239000003792 electrolyte Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000007306 functionalization reaction Methods 0.000 description 1
- 238000005087 graphitization Methods 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 239000002243 precursor Substances 0.000 description 1
Classifications
-
- 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
- Y02E60/13—Energy storage using capacitors
Landscapes
- Battery Electrode And Active Subsutance (AREA)
Abstract
The invention relates to an electrochemistry capacitor anode and a manufacturing method, comprising a vector of conductivity current collector and electrode substances. The electrode substances include active matters, a conductivity agent and a binding agent. The invention is characterized in that the electrode substances additionally comprises graphite fiber filament, the proportions and weight percentage contents of each component of the electrode substances are that the active matters take 83-89%, the conductivity agent takes 5-9%, binding agent takes 4-6% and the graphite fiber filament takes 0.5-2%. The manufacturing process is characterized in that the active matters, conductivity agent and graphite fiber filament are stirred and blended according to proportion, then de-ionized water and binding agent are added to stir, and then shaped to the needed size, thickness and cutting film, then placing into the bake oven to dry and finally adhering the films onthe conductivity current collectors of the electrode as required. The invention employs graphite fiber filament as the supporting structure of the electrochemistry capacitor, which has advantages of high strength and light weight, adds conductivity, and also increases the mechanical strength of the electrode substances.
Description
Technical field
The present invention relates to a kind of capacitor, particularly disclose a kind of electrochemical capacitor electrode and manufacture method thereof.
Background technology
At present the technical merit of electrochemical capacitor (EC) or ultracapacitor has reached certain height, wants to have the new progress breakthrough on the material only.So research emphasis has also been transferred to structural stability and the durability aspect of EC, to be conceived to the application of industrialization and scale.The common electrode of EC generally by electrode current collecting body as carrier, electrode substance is as energy storage section, electrode substance comprises active material, conductive agent, binding agent, no matter any system, present most popular active material all is active carbon or carbon nano-tube, conductive agent is conductive carbon black or graphite, these active materials generally all are Powdered, are difficult to be shaped, even after being shaped, its mechanical strength and the performance in electrolyte are all disappointing, and this also is one of a great problem of EC existence.
Summary of the invention
The purpose of this invention is to provide a kind of electrode mechanical strength deficiency that overcomes, reduce a kind of electrode manufacturing method of electrode substance shaping difficulty, improve the conductivity of electrode simultaneously, disclose a kind of electrochemical capacitor electrode and manufacture method thereof.
The present invention is achieved in that a kind of electrochemical capacitor electrode, comprise conductive current collector carrier and electrode substance, described electrode substance comprises active material, conductive agent and binding agent, electrode substance each component proportioning and weight percent content are: active material 83～89%, conductive agent 5～9%, binding agent 4～6%, it is characterized in that: electrode substance also contains the graphite fibre silk, graphite fibre silk 0.5～2%.Described graphite fibre filament length degree is 0.5～5mm, and diameter is 0.01～0.5mm, and its surface is a graphite-structure, and inside is fibre structure.Described graphite fibre silk is the quasi-network structure that unordered shape is winding, overlap joint in electrode substance.Described conductive current collector carrier is selected a kind of in nickel foil, nickel screen, nickel strap, Copper Foil, copper mesh, copper strips, stainless steel foil, stainless (steel) wire, stainless steel band, Punching steel strip or burr steel belt.Described active material is a kind of or its mixture in active carbon, carbon nano-tube, the carbon aerogels.Described conductive agent is a kind of or its mixture in carbon black, native graphite, the Delanium.Described binding agent is a kind of or its mixture in polytetrafluoroethylene, the inclined to one side tetrafluoroethene.
The manufacture method of electrochemical capacitor electrode of the present invention is as follows:
Each constituent content is: activity substance content is 83～89%, and conductive agent content is 5～9%, and the content of binding agent is 4～6%; Graphite fibre silk content is 0.5～2%.
Active material, conductive agent, graphite fibre silk are proportionally put into the batch mixing vessel with dry state, adopt electronic sealing stirring to carry out raw material and just mix, mixing speed is 300 rev/mins, mixing time 20～30 minutes; 5 minutes needs of every batch mixing change mixing direction.
This process also has the another one purpose except making the even mixing of three kinds of raw materials, make three kinds of raw materials produce compatibilities exactly.Common EC electrode material has only active carbon and conductive carbon black, this is two kinds of pure powder body materials, its mixing only needs the high-speed stirred certain hour just can reach even, yet three kinds of raw materials are arranged among the present invention, and have a kind of fibrous, be difficult to be evenly distributed, so must carry out high-speed stirred and keep the regular hour with dry powder.
Raw material after just mixing is transferred to new vessel, adds a certain proportion of deionized water and binding agent then, stir along single direction, do not allow to change direction, mixing speed is 50～60 rev/mins, mixing time 15～20 minutes; After finishing, stirring is transferred to active material shaping workbench.
This step role also needs the graphite fibre silk to twine, overlap except batch mixing is even, does not allow to change so stir mixing direction.
Electrode substance is formalized to needed size, thickness, and section.Put into baking oven and dry, 120 ℃ of oven temperatures, standing time 5～6h; On the conductive current collector attached to electrode of will cutting into slices on request after the oven dry, electrode is made and is promptly finished.
Effect of the present invention is: because addition has only 0.5～2%, be added with that other components contents such as active material is not affected in the electrode of graphite fibre silk, can't influence the energy storage index of EC, can improve the conductivity of electrode on the contrary, the cycle life of EC just be had superpose.
The invention has the beneficial effects as follows: adopted among the present invention through high-temperature process and functionalization and the graphite fibre silk, the precursor of this material is by polypropylene
Class is the carbon fiber wire that raw material is made, and the carbon fiber wire tool has intensity height, lightweight characteristics, and carbon fiber wire has been widely applied to every field with its superior performance.Keep its characteristic by its graphitization with the rear section, and added conductivity.The graphite fibre silk is evenly distributed in the electrode substance, and twines mutually, overlaps, and makes the mechanical strength of electrode substance improve 3～8 times.
The invention will be further described below in conjunction with embodiment.
Embodiment
Embodiment 1:
Electrode current collecting body adopts Punching steel strip, size 70mm * 90mm; It is 1800m that active carbon adopts specific area
2/ g, granularity are 200 purpose cocoanut active charcoals; Conductive agent adopts conductive carbon black, and granularity is 800 orders; Binding agent adopts ptfe emulsion, and concentration is 60%.At first, activated carbon, conductive agent, graphite fibre silk are added 890g, 60g, 10g in the batch mixing vessel with dry state respectively, sealing; Adopt the electric mixer batch mixing then, mixing speed is 300 rev/mins, mixing time 25 minutes; Mixed raw material is transferred to new vessel.Add deionized water 2670g, ptfe emulsion 67g stirs along clockwise direction, does not allow to change direction, and mixing speed is 60 rev/mins, mixing time 20 minutes; After finishing, stirring is transferred to active material shaping workbench; Electrode substance is pressed into the thin slice that thickness is 0.5mm with tablet press machine, is cut into 50 * 70mm size, put into baking oven and dry with cutter, 120 ℃ of oven temperatures, standing time 5h; Oven dry back by will requirement with on the conductive current collector of section attached to electrode, compress with tablet press machine then.Electrode is made and is promptly finished, and the electrode that this kind electrode can be used as high-energy type EC under the inorganic system uses.
Embodiment 2:
Electrode current collecting body adopts nickel foil, size 70mm * 90mm; It is 1800m that active carbon adopts specific area
2/ g, granularity are 200 purpose cocoanut active charcoals; Conductive agent adopts conductive carbon black, and granularity is 800 orders; Binding agent adopts inclined to one side tetrafluoroethene emulsion, and concentration is 60%.At first, activated carbon, conductive agent, graphite fibre silk are added 830g, 90g, 20g in the batch mixing vessel with dry state respectively, sealing; Adopt the electric mixer batch mixing then, mixing speed is 300 rev/mins, mixing time 30 minutes; Mixed raw material is transferred to new vessel.Add deionized water 2490g, tetrafluoroethene emulsion 100g stirs along clockwise direction partially, does not allow to change direction, and mixing speed is 60 rev/mins, mixing time 15 minutes; After finishing, stirring is transferred to active material shaping workbench; Electrode substance is pressed into the thin slice that thickness is 1.0mm with tablet press machine, is cut into 50 * 70mm size, put into baking oven and dry with cutter, 120 ℃ of oven temperatures, standing time 5h; Oven dry back by will requirement with on the conductive current collector of section attached to electrode, compress with tablet press machine then.Electrode is made and is promptly finished, and the electrode that this kind electrode can be used as power-type EC under the inorganic system uses.
Claims (8)
1. electrochemical capacitor electrode, comprise conductive current collector carrier and electrode substance, described electrode substance comprises active material, conductive agent and binding agent, electrode substance each component proportioning and weight percent content are: active material 83～89%, conductive agent 5～9%, binding agent 4～6%, it is characterized in that: electrode substance also contains the graphite fibre silk, graphite fibre silk 0.5～2%.
2. electrochemical capacitor electrode according to claim 1 is characterized in that: described graphite fibre filament length degree is 0.5～5mm, and diameter is 0.01～0.5mm, and its surface is a graphite-structure, and inside is fibre structure.
3. electrochemical capacitor electrode according to claim 1 and 2 is characterized in that: described graphite fibre silk is the quasi-network structure that unordered shape is winding, overlap joint in electrode substance.
4. electrochemical capacitor electrode according to claim 1 is characterized in that: described conductive current collector carrier is selected a kind of in nickel foil, nickel screen, nickel strap, Copper Foil, copper mesh, copper strips, stainless steel foil, stainless (steel) wire, stainless steel band, Punching steel strip or burr steel belt.
5. electrochemical capacitor electrode according to claim 1 is characterized in that: described active material is a kind of or its mixture in active carbon, carbon nano-tube, the carbon aerogels.
6. electrochemical capacitor electrode according to claim 1 is characterized in that: described conductive agent is a kind of or its mixture in carbon black, native graphite, the Delanium.
7. electrochemical capacitor electrode according to claim 1 is characterized in that: described binding agent is a kind of or its mixture in polytetrafluoroethylene, the inclined to one side tetrafluoroethene.
8. the manufacture method of any described electrochemical capacitor electrode in the claim 1～7, it is characterized in that: active material, conductive agent, graphite fibre silk are proportionally put into the batch mixing vessel with dry state, adopt electronic sealing stir mixing, mixing speed is 300 rev/mins, mixing time 20～30 minutes; Mixed material is transferred to new vessel, adds a certain proportion of deionized water and binding agent then, stir then, mixing speed is 50～60 rev/mins, mixing time 15～20 minutes; Be transferred to active material shaping workbench after stirring is finished, to needed size, thickness, and section is put into baking oven again and is dried with active material setting, 120 ℃ of oven temperatures, standing time 5～6h; On the conductive current collector of will cutting into slices on request after the oven dry attached to electrode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007100946719A CN101226830B (en) | 2007-12-28 | 2007-12-28 | Electrochemical capacitor electrode and manufacturing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007100946719A CN101226830B (en) | 2007-12-28 | 2007-12-28 | Electrochemical capacitor electrode and manufacturing method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101226830A CN101226830A (en) | 2008-07-23 |
| CN101226830B true CN101226830B (en) | 2011-03-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2007100946719A Active CN101226830B (en) | 2007-12-28 | 2007-12-28 | Electrochemical capacitor electrode and manufacturing method thereof |
Country Status (1)
| Country | Link |
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| CN (1) | CN101226830B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101359534B (en) * | 2008-08-18 | 2011-08-03 | 东莞市迈科科技有限公司 | Electrochemical capacitor containing titanium dioxide and preparation method thereof |
| CN103779104A (en) * | 2012-10-23 | 2014-05-07 | 海洋王照明科技股份有限公司 | Super capacitor electrode and preparation method thereof |
| CN103199266A (en) * | 2013-03-15 | 2013-07-10 | 中国科学院城市环境研究所 | Electrode of bioelectrochemical system and manufacturing method of electrode |
| CN104616906A (en) * | 2015-01-27 | 2015-05-13 | 上海奥威科技开发有限公司 | Cathode embedded magnesium ion supercapacitor and preparing method thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1048892A (en) * | 1989-05-24 | 1991-01-30 | 奥本大学 | Blend fiber composite structure and method for making thereof and purposes |
| CN1141516A (en) * | 1995-07-25 | 1997-01-29 | 天津和平海湾置业发展公司 | Method for mfg. secondary alkaline cccumulator electrode |
| CN1230283A (en) * | 1996-05-15 | 1999-09-29 | 海珀里昂催化国际有限公司 | Nano-graphite fibers for use in electrochemical capacitors |
| CN1538470A (en) * | 2003-09-30 | 2004-10-20 | 清华大学深圳研究生院 | Stacked supercapacitor and manufacturing method thereof |
| US6830595B2 (en) * | 2002-12-20 | 2004-12-14 | Advanced Energy Technology Inc. | Method of making composite electrode and current collectors |
-
2007
- 2007-12-28 CN CN2007100946719A patent/CN101226830B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1048892A (en) * | 1989-05-24 | 1991-01-30 | 奥本大学 | Blend fiber composite structure and method for making thereof and purposes |
| CN1141516A (en) * | 1995-07-25 | 1997-01-29 | 天津和平海湾置业发展公司 | Method for mfg. secondary alkaline cccumulator electrode |
| CN1230283A (en) * | 1996-05-15 | 1999-09-29 | 海珀里昂催化国际有限公司 | Nano-graphite fibers for use in electrochemical capacitors |
| US6830595B2 (en) * | 2002-12-20 | 2004-12-14 | Advanced Energy Technology Inc. | Method of making composite electrode and current collectors |
| CN1538470A (en) * | 2003-09-30 | 2004-10-20 | 清华大学深圳研究生院 | Stacked supercapacitor and manufacturing method thereof |
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| Publication number | Publication date |
|---|---|
| CN101226830A (en) | 2008-07-23 |
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Denomination of invention: Electrochemical capacitor electrode and manufacturing method thereof Effective date of registration: 20131120 Granted publication date: 20110330 Pledgee: Pudong New Area Shanghai Zhangjiang microfinance Limited by Share Ltd Pledgor: Shanghai Aowei Technology Development Co., Ltd. Registration number: 2013310000067 |
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