CN100550486C - A kind of preparation method of liquid battery compound conductive plastic current collector body - Google Patents
A kind of preparation method of liquid battery compound conductive plastic current collector body Download PDFInfo
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- CN100550486C CN100550486C CNB2007100499132A CN200710049913A CN100550486C CN 100550486 C CN100550486 C CN 100550486C CN B2007100499132 A CNB2007100499132 A CN B2007100499132A CN 200710049913 A CN200710049913 A CN 200710049913A CN 100550486 C CN100550486 C CN 100550486C
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- current collector
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- collector body
- conductive plastic
- liquid battery
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- 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
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- 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
Abstract
The invention provides a kind of preparation method of liquid battery compound conductive plastic current collector body, this preparation method adds conductive filler graphite, conductive black, acetylene black, one or more composite conducting materials of charcoal fiber powder polytetrafluoroethylene teflon soliquoid, mixes, oven dry then, isopropyl alcohol soaks, with soak 70～80 ℃ temperature conditions under roll repeatedly, make diaphragm, diaphragm is cut into required size.According to instructions for use, with individual diaphragm, many diaphragms or conductive mesh, at normal temperatures, at 400kg/cm
2Pressure under compression moulding, molded material is fixed in the special fixture, put into the high temperature furnace sintering together with anchor clamps, the cooling, make conductive plastic current collector body.Adopt the liquid battery compound conductive plastic current collector body of the present invention's preparation to have good electric conductivity, liquid-impermeable, resistance to chemical attack and electrochemical corrosion, cost is lower.
Description
Technical field
The present invention relates to the flow battery technical field, especially relate to a kind of preparation method of liquid battery compound conductive plastic current collector body.
Background technology
The vanadium flow battery collector generally is to use graphite cake, and it is better that graphite cake has charge-discharge performance, can bear high current density and discharge and recharge, and its charging or discharging current density can reach 128mA/cm
2But the graphite cake collector has the seepage phenomenon to take place, slight corrosion is in use arranged, especially under the condition of overcharging, the graphite collector is easily oxidized, simultaneously the graphite cake valency is expensive, easily crisp, and these defectives have had a strong impact on useful life, the manufacturing cost of vanadium flow battery, the performance index such as performance of battery.
In order to address the above problem, domestic Panzhihua iron and steel research institute and Central South University have proposed a kind of collector body that is used for flow battery in patent 2005100205854, described basis material is the rubber plastic blend elastomer that hydrogenated styrene-butadiene-styrene block polymer, polypropylene, surface conditioning agent and naphthenic oil are prepared from, doping carbon element electric conducting material is moulded and compression molding through refining.It forms complicated, and its specific insulation is lower than 0.1 ohmcm, can reach 0.8 ohmcm, and electric conductivity also needs further raising.There is the outstanding powder (mainly using inclined to one side fluorine ethylene) of the polyvinyl fluoride of use to be matrix abroad, adopt graphite to do conductive filler, by mixing, roll and the method making zinc-bromine bettery of mould pressing process and the collector in the fuel cell, but this patent needs 800 ℃ Temperature Treatment graphite, increased cost, its electrical property needs to improve.Specific insulation is more little, and the conductivity of expression collector is good more.
Summary of the invention
The preparation method who the purpose of this invention is to provide a kind of liquid battery compound conductive plastic current collector body.
The preparation method of liquid battery compound conductive plastic current collector body of the present invention is made up of following steps:
A. polytetrafluoroethylene teflon soliquoid, conductive filler and an amount of distilled water are mixed dehydration, oven dry;
B. isopropyl alcohol soaks the oven dry material;
C. under 70～80 ℃ temperature conditions, the material after the immersion rolls through roller, makes diaphragm;
D. conductive mesh and diaphragm are cut into the size that needs respectively, conductive mesh is as the intermediate layer, diaphragm placed the both sides of conductive mesh, at 400Kg/cm
2Under the pressure conditions, compression moulding;
E. the material after the steps d compression moulding is put into special fixture, put in 390 ℃ of high temperature furnaces together with anchor clamps, be incubated 30 minutes, cooling makes required.
Wherein the mass concentration of the described polytetrafluoroethylene teflon soliquoid of step a is 40%～70%.
The described polytetrafluoroethylene net weight of step a scope 10%～90%, the weight range 90%～10% of conductive filler.
The preferable range 10%～50% of the described polytetrafluoroethylene net weight of step a, the preferable range 50%～90% of conductive filler.
The described conductive filler of step a adopts one or both in graphite, acetylene black and the short carbon fiber.
The described conductive mesh of steps d adopts flexible graphite net or wire netting.
Described wire netting adopts the copper mesh of non-establishment or the nickel screen of non-establishment.
Described wire netting adopts copper mesh or the nickel screen of electroplating layer of metal silver.
Described steps d adopts following content to substitute: with the membrane cutting that rolls of step c, at 400Kg/cm
2Under the pressure conditions, directly compression moulding.
Diaphragm in the described steps d is more than one deck.
In collector composition of the present invention, polytetrafluoroethylene is as plastic substrate, in process of production by rolling modification, makes polytetrafluoroethylene become dendritic network structure, play skeleton function, improved the ability of mechanical property, resistance to chemical attack and the electrochemical corrosion of collector.
Conductive filler graphite, acetylene black and conductive fiber powder play electric action in collector.Wherein, the graphite effect is better.
Conductive mesh has been to strengthen the afflux effect, and the identical diaphragm after rolling adds conductive mesh in mold process, can improve the conductance of collector, can improve the mechanical property of collector simultaneously.
The specific insulation that the present invention has solved existing liquid battery compound conductive plastic current collector body preferably is low, the etching of graphite cake, fragility and the high problem of cost.Adopt the liquid battery compound conductive plastic current collector body of the present invention's preparation to have conductivity preferably, cost is lower.
Embodiment
Further specify the present invention below by embodiment.In following embodiment, with the conductivity of specific insulation (ohmcm) expression current collector of liquid flow battery body, specific insulation is more little, and the conductivity of collector is good more.
Embodiment 1
Under normal temperature and normal pressure, according to weight ratio 55.6% 60% polytetrafluoroethylene teflon soliquoid, 22.2% graphite, 22.2% carbon black and an amount of distilled water are mixed, dehydration, oven dry, isopropyl alcohol soaks; Under the condition of 75 ℃ of temperature, roll repeatedly, make diaphragm; Cut out diaphragm, will cut out two good diaphragms at 400Kg/cm
2Under the pressure conditions, compression moulding; The moulding sample is put into special fixture, put in 390 ℃ of high temperature furnaces sintering 30 minutes together with anchor clamps; Take out anchor clamps, natural cooling makes collector, and its specific insulation is 0.3361 ohmcm.
Embodiment 2
Prescription is identical with embodiment 1 with process conditions, just adds the silver-plated non-establishment copper mesh of one deck when compacting, and the specific insulation that makes collector is 0.02992 ohmcm.
Embodiment 3
Prescription is identical with embodiment 1 with process conditions, just adds the non-establishment copper mesh of one deck when compacting, and the specific insulation that makes collector is 0.02826 ohmcm.
Embodiment 4
Prescription is identical with embodiment 1 with process conditions, is the non-establishment nickel screen that adds when compacting, and the specific insulation of the collector that makes is 0.02722 ohmcm.
Embodiment 5
Prescription is identical with embodiment 4 with process conditions, just adds one deck toughness graphite network when compacting, and the specific insulation of the collector that makes is 0.06351 ohmcm.
Embodiment 6
Under normal temperature and normal pressure, according to weight ratio 20% 60% polytetrafluoroethylene teflon soliquoid, 80% graphite and an amount of distilled water are mixed, dehydration, oven dry, isopropyl alcohol soaks; Under the condition of 75 ℃ of temperature, roll repeatedly, make diaphragm; Cut out diaphragm, will cut out two good diaphragms at 400Kg/cm
2Under the pressure conditions, compression moulding; The moulding sample is put into special fixture, put in 390 ℃ of high temperature furnaces sintering 30 minutes together with anchor clamps; Take out anchor clamps, natural cooling makes collector, and its specific insulation is 0.06245 ohmcm.
Embodiment 7
Under normal temperature and normal pressure, according to weight ratio 55.6% 60% polytetrafluoroethylene teflon soliquoid, 29.6% graphite, 14.8% carbon black and an amount of distilled water are mixed, oven dry, isopropyl alcohol soaks; Under the condition of 75 ℃ of temperature, roll repeatedly, make diaphragm; Cut out diaphragm, will cut out two good diaphragms at 400Kg/cm
2Under the pressure conditions, compression moulding; The moulding sample is put into special fixture, put in 390 ℃ of high temperature furnaces sintering 30 minutes together with anchor clamps; Take out anchor clamps, natural cooling makes collector, and its specific insulation is 0.2052 ohmcm.
Embodiment 8
Under normal temperature and normal pressure, according to weight ratio 26.3% 60% polytetrafluoroethylene teflon soliquoid, 60.5% conductive black, 13.2% acetylene black and an amount of distilled water are mixed, dehydration, oven dry, isopropyl alcohol soaks; Under the condition of 75 ℃ of temperature, roll repeatedly, make diaphragm; Cut out diaphragm, will cut out two good diaphragms at 400Kg/cm
2Under the pressure conditions, compression moulding; The moulding sample is put into special fixture, put in 390 ℃ of high temperature furnaces sintering 30 minutes together with anchor clamps; Take out anchor clamps, natural cooling makes collector, and its specific insulation is 0.1303 ohmcm.
Embodiment 9
Under normal temperature and normal pressure, according to weight ratio 55.6% 60% polytetrafluoroethylene teflon soliquoid, 29.6% graphite, 14.8% carbon fiber powder and an amount of distilled water are mixed, oven dry, isopropyl alcohol soaks; Under the condition of 75 ℃ of temperature, roll repeatedly, make diaphragm; Cut out diaphragm, will cut out two good diaphragms at 400Kg/cm
2Under the pressure conditions, compression moulding; The moulding sample is put into special fixture, put in 390 ℃ of high temperature furnaces sintering 30 minutes together with anchor clamps; Take out anchor clamps, natural cooling makes collector, and its specific insulation is 0.2252 ohmcm.
Embodiment 10
Prescription and process conditions are identical with embodiment 9, just 55.6% 60% polytetrafluoroethylene teflon soliquoid are replaced to 55.6% 70% polytetrafluoroethylene teflon soliquoid, make collector, and its specific insulation is 0.2248 ohmcm, and its performance follows embodiment 9 identical.
Embodiment 11
Prescription and process conditions are identical with embodiment 9, just 55.6% 60% polytetrafluoroethylene teflon soliquoid are replaced to 55.6% 84% polytetrafluoroethylene teflon soliquoid, make collector, and its specific insulation is 0.2255 ohmcm, and its performance follows embodiment 9 identical.
Claims (9)
1. the preparation method of a liquid battery compound conductive plastic current collector body may further comprise the steps successively:
A. polytetrafluoroethylene teflon soliquoid, conductive filler and an amount of distilled water are mixed dehydration, oven dry;
B. isopropyl alcohol soaks the oven dry material;
C. under 70～80 ℃ temperature conditions, the material after the immersion rolls through roller, makes diaphragm;
D. conductive mesh and diaphragm are cut into the size that needs respectively, conductive mesh is as the intermediate layer, diaphragm placed the both sides of conductive mesh, at 400Kg/cm
2Under the pressure conditions, compression moulding;
E. the material after the steps d compression moulding is put into special fixture, put in 390 ℃ of high temperature furnaces together with anchor clamps, be incubated 30 minutes, cooling makes required;
Wherein the described conductive filler of step a adopts one or both in graphite, acetylene black and the charcoal fiber powder.
2. the preparation method of liquid battery compound conductive plastic current collector body according to claim 1, the concentration of the described polytetrafluoroethylene teflon soliquoid of step a is 40%～70%.
3. the preparation method of liquid battery compound conductive plastic current collector body according to claim 1, the weight range 10%～90% of the described polytetrafluoroethylene net content of step a, the weight range 90%～10% of conductive filler.
4. the preparation method of liquid battery compound conductive plastic current collector body according to claim 1, the weight range of the described polytetrafluoroethylene net content of step a is 10%～50%, the weight range 90%～50% of conductive filler.
5. the preparation method of liquid battery compound conductive plastic current collector body according to claim 1, the described conductive mesh of steps d adopts flexible graphite net or wire netting.
6. the preparation method of liquid battery compound conductive plastic current collector body according to claim 5, described wire netting directly adopts the copper mesh of non-establishment or the nickel screen of non-establishment.
7. according to the preparation method of claim 5 or 6 described liquid battery compound conductive plastic current collector bodies, described wire netting adopts copper mesh or the nickel screen of electroplating layer of metal silver.
8. the preparation method of liquid battery compound conductive plastic current collector body according to claim 1 is characterized in that: described steps d adopts following content to substitute: with the membrane cutting that rolls of step c, at 400Kg/cm
2Under the pressure conditions, directly compression moulding.
9. the preparation method of liquid battery compound conductive plastic current collector body according to claim 1, it is characterized in that: the diaphragm in the described steps d is more than one deck.
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| CNB2007100499132A CN100550486C (en) | 2007-08-29 | 2007-08-29 | A kind of preparation method of liquid battery compound conductive plastic current collector body |
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| CNB2007100499132A CN100550486C (en) | 2007-08-29 | 2007-08-29 | A kind of preparation method of liquid battery compound conductive plastic current collector body |
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| CN100550486C true CN100550486C (en) | 2009-10-14 |
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Families Citing this family (15)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101853942B (en) * | 2009-04-03 | 2013-02-06 | 夏嘉琪 | Double electrode plate for all-vanadium liquid flow energy storage battery and preparation method thereof |
| CN102468493B (en) * | 2010-11-09 | 2014-03-12 | 中国科学院金属研究所 | Preparation method of high-activity vanadium battery electrode material |
| CN102569825B (en) * | 2012-02-18 | 2015-01-21 | 沈阳飞机工业（集团）有限公司 | Conductive plastic composite electrode and manufacture method therefor |
| CN103000905B (en) * | 2012-11-22 | 2015-04-15 | 中国科学院金属研究所 | Current collector for vanadium battery and manufacturing method of collector |
| CN103872346A (en) * | 2014-03-18 | 2014-06-18 | 湖南省银峰新能源有限公司 | Non-homogeneous-state conductive plastic bipolar plate and preparation method of non-homogeneous-state conductive plastic bipolar plate |
| CN105322182B (en) * | 2014-08-01 | 2018-02-23 | 大连融科储能技术发展有限公司 | Special-shaped bipolar plates and its flow cell pile |
| CN105762365A (en) * | 2016-04-28 | 2016-07-13 | 深圳市力为锂能科技有限公司 | Current collector for lithium ion battery and preparation method of current collector |
| CN106299389B (en) * | 2016-11-11 | 2019-01-15 | 成都先进金属材料产业技术研究院有限公司 | Bipolar plate of all-vanadium redox flow battery and preparation method thereof |
| CN106848346B (en) * | 2017-03-06 | 2019-07-26 | 昆山知氢信息科技有限公司 | Flow battery bipolar plates and preparation method thereof |
| CN108963266A (en) * | 2018-07-31 | 2018-12-07 | 邦泰宏图（深圳）科技有限责任公司 | A kind of collector of lithium ion battery and preparation method thereof |
| CN110854401B (en) * | 2018-08-21 | 2022-08-19 | 北京普能世纪科技有限公司 | Integrated collector plate, and preparation method and application thereof |
| CN110219017B (en) * | 2019-06-06 | 2021-03-05 | 燕山大学 | Preparation method of molybdenum disulfide/expanded graphite hydrogen evolution electrode |
| JP6966523B2 (en) * | 2019-11-01 | 2021-11-17 | グンゼ株式会社 | A current collector for a lithium-ion battery and a method for manufacturing the current collector. |
| CN112864347A (en) * | 2021-01-15 | 2021-05-28 | 武汉船用电力推进装置研究所（中国船舶重工集团公司第七一二研究所） | Conductive framework for positive electrode of zinc-silver oxide battery and manufacturing method thereof |
| CN115663225B (en) * | 2022-12-27 | 2023-04-07 | 杭州德海艾科能源科技有限公司 | Preparation method of flow battery composite collector plate |
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