CN102376980A - Cell with carbon-free lithium iron phosphate as anode and manufacturing method thereof - Google Patents
Cell with carbon-free lithium iron phosphate as anode and manufacturing method thereof Download PDFInfo
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- CN102376980A CN102376980A CN2010102538241A CN201010253824A CN102376980A CN 102376980 A CN102376980 A CN 102376980A CN 2010102538241 A CN2010102538241 A CN 2010102538241A CN 201010253824 A CN201010253824 A CN 201010253824A CN 102376980 A CN102376980 A CN 102376980A
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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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
Abstract
The invention provides a cell with carbon-free lithium iron phosphate as an anode. The cell treats a mixture of anode materials consisting of carbon-free lithium iron phosphate or carbon-free lithium iron phosphate, lithium cobalt oxide, lithium manganese oxide, lithium nickel oxide, and lithium nickel cobalt manganese oxide as the active substance of the anode. The invention also provides a manufacturing method of the cell with carbon-free lithium iron phosphate as the anode, and the manufacturing method concretely comprises the following steps: 1, grinding the active substance of the anode, a conductive agent and a dispersant into below 5mum by a nanometer grinder; 2, adding a binder solution to prepare a slurry of the anode; and 3, coating the slurry on aluminum foil, and drying to prepare an anode sheet. A cathode is manufactured with a manufacturing method of a cathode sheet of traditional lithium ion cells. The finished cell is manufactured by assembling the anode sheet, the cathode sheet, and a diaphragm into an electrode set with a manufacturing method of the traditional lithium ion cells, and carrying out processes of casing entering, liquid injection, sealing, and formation. According to the cell of the invention, the processability of the electrodes of the cell are good, powder of the electrodes are not easy to drop, and a problem that cells with carbon-free lithium iron phosphate as the anode cannot be commercialized is solved.
Description
Technical field
A kind of Battery And Its Manufacturing Methods that uses carbon-free LiFePO4 as positive pole
Background technology
LiFePO4 is emerging in recent years a kind of battery material, has advantages such as cost is low, fail safe height, but owing to itself poorly conductive, the battery commercial-free that adopts pure phase (carbon-free) LiFePO4 to be made into conventional method as positive pole is used maybe.For addressing the above problem, many scholars add carbon source and process the carbon composite lithium iron phosphate in the LiFePO4 building-up process, to improve material self-conductive property, finally process battery with the carbon composite lithium iron phosphate as positive pole.Though the carbon composite lithium iron phosphate can improve material conductivity to a certain extent, complex process, the uncontrollable impurity of many, the easy generations of side reaction in building-up process; And gained carbon composite lithium iron phosphate receives carbon source carbonization degree affect batch poor stability, electrode poor in processability, easy dry linting, battery performance instability.To the problems referred to above; The present invention provides the battery of a kind of brand-new carbon-free LiFePO4 of use as positive pole; This battery positive electrode active material includes but not limited to the mixture of positive electrodes such as the sour lithium of carbon-free LiFePO4 or carbon-free LiFePO4 and cobalt, LiMn2O4, lithium nickelate, nickle cobalt lithium manganate; The electrode processability is good, be difficult for dry linting, battery performance is stable, solved to use the carbon-free LiFePO4 can't business-like problem as the battery of positive pole.
Summary of the invention
It is the battery of positive active material that the present invention provides a kind of mixture with positive electrodes such as carbon-free LiFePO4 or carbon-free LiFePO4 and cobalt acid lithium, LiMn2O4, lithium nickelate, nickle cobalt lithium manganates.
The present invention also provides the manufacturing approach of above-mentioned battery; Concrete steps are for to be milled to positive active material, conductive agent, dispersant below 5 microns through the nanometer barreling; Add binder solution then and make anode sizing agent, be coated on the aluminium foil and oven dry makes positive plate.Manufacture method with traditional anode plate for lithium ionic cell is made negative pole.By traditional lithium ion manufacture method with positive plate, negative plate, barrier film assembling poling group, go into shell, fluid injection, seal, change into and make the finished product battery.
Above-mentioned positive active material includes but not limited to the mixture of positive electrodes such as the sour lithium of carbon-free LiFePO4 or carbon-free LiFePO4 and cobalt, LiMn2O4, lithium nickelate, nickle cobalt lithium manganate etc.; Conductive agent includes but not limited to acetylene black, carbon black, graphite, CNT etc.; Dispersant includes but not limited to polyvinyl alcohol, polyethylene glycol, polyvinylpyrrolidone etc.; Binding agent includes but not limited to Kynoar (PVDF), polytetrafluoroethylene (PTFE), butadiene-styrene rubber (SBR), CMC (CMC) etc.The main active substances of negative pole includes but not limited to one or more the mixture in hard carbon, soft carbon, graphite, carbonaceous mesophase spherules, the lithium titanate.
Embodiment
Embodiment of the present invention adds binder solution then and makes anode sizing agent for positive active material, conductive agent, dispersant are milled to below 5 microns through the nanometer barreling, anode sizing agent is coated on the aluminium foil dries then, makes positive plate.Manufacture method with traditional anode plate for lithium ionic cell is made negative pole.By traditional lithium ion manufacture method with positive plate, negative plate, barrier film assembling poling group, go into shell, fluid injection, seal, change into and make the finished product battery.
According to method provided by the invention, the ratio that positive active material accounts for total positive mix is 50～98%, and preferred proportion is 85～95%;
According to method provided by the invention, the ratio that conductive agent accounts for total positive mix is 1～45%, and preferred proportion is 5～12%;
Provide according to the present invention method, the ratio that dispersant accounts for total positive mix is 0.1～10%, preferred proportion is 0.5～5%
Provide according to the present invention method, the ratio that binding agent accounts for total positive mix is 0.5～25%, preferred proportion is 0.5～10%
Provide according to the present invention method, positive active material, conductive agent, dispersant can add nanometer barreling mill simultaneously, also can earlier positive active material and dispersant be added the nanometer barreling and be milled to below 5 microns, and then the adding conductive agent is ground to below 5 microns;
Provide according to the present invention method, positive active material includes but not limited to the mixture of positive electrodes such as carbon-free LiFePO4 or carbon-free LiFePO4 and cobalt acid lithium, LiMn2O4, lithium nickelate, nickle cobalt lithium manganate etc.;
Provide according to the present invention method, conductive agent includes but not limited to acetylene black, carbon black, graphite, CNT etc.;
Provide according to the present invention method, dispersant includes but not limited to polyvinyl alcohol, polyethylene glycol, polyvinylpyrrolidone etc.;
Provide according to the present invention method, binding agent includes but not limited to Kynoar (PVDF), polytetrafluoroethylene (PTFE), butadiene-styrene rubber (SBR), CMC (CMC) etc.;
Provide according to the present invention method, the main active substances of negative pole includes but not limited to one or more the mixture in hard carbon, soft carbon, graphite, carbonaceous mesophase spherules, the lithium titanate.
Below through embodiment further explain execution mode of the present invention.
Embodiment 1
9 kilograms of carbon-free LiFePO4s, 500 gram acetylene blacks, 100 gram polyvinyl alcohol are added the nanometer barreling and are milled to below 5 microns; Add 10 kilograms of nmp solution continuation grindings that contain 5% Kynoar then and obtained anode sizing agent in 1 hour; Surveying the anode sizing agent viscosity is 6000cps; This anode sizing agent is coated on the aluminium foil dries, make positive plate.In 9.5 kilograms of graphite powders, add 10 kilograms of nmp solutions that contain 5% Kynoar, stirring makes cathode size, this cathode size is coated on the Copper Foil dries, and makes negative plate.By 7 ampere-hour cell production process above-mentioned positive and negative plate is assembled into battery; Testing the average discharge capacity of this batch battery 0.2C is 7.03 ampere-hours; The average discharge capacity of 1C is 6.94 ampere-hours, and 1C capacity/0.2C capacity=98.7% is full of electricity 60 degree storages after 7 days with this batch battery; 0.2C average discharge capacity is 6.83 ampere-hours, residual capacity is 97.2%.
Embodiment 2
The carbon-free LiFePO4 of 720 grams, 200 gram nickle cobalt lithium manganates, 30 gram CNTs, 10 gram polyethylene glycol are added the nanometer barreling and are milled to below 5 microns; Adding 1000 grams then contains 2% butadiene-styrene rubber, 2%CMC solution and continues to grind and obtained anode sizing agent in 1 hour; Surveying the anode sizing agent viscosity is 5300cps; This anode sizing agent is coated on the aluminium foil dries, make positive plate.In 950 gram carbonaceous mesophase spherules powder, add the nmp solution that 1000 grams contain 5% Kynoar, stirring makes cathode size, this cathode size is coated on the Copper Foil dries, and makes negative plate.By 053450 cell production process above-mentioned positive and negative plate is assembled into battery; Testing the average discharge capacity of this batch battery 0.2C is 748 MAHs; The average discharge capacity of 1C is 739 MAHs, and 1C capacity/0.2C capacity=98.9% is full of electricity 60 degree storages after 7 days with this batch battery; 0.2C average discharge capacity is 725 MAHs, residual capacity is 97.0%.
Comparative Examples 1
In 9 kg of carbon composite lithium iron phosphates, 500 gram acetylene blacks, add 10 kilograms of nmp solutions that contain 5% Kynoar, stir with mixer and got paste in 3 hours, survey the anode sizing agent viscosity and surpass viscosity dosage journey (greater than 30000cps); Can't apply; Add 5 kilograms of NMP continued and stirred 3 hours, get anode sizing agent, surveying this slurry viscosity is 8000cps; This anode sizing agent is coated on the aluminium foil dries, make positive plate.In 9.5 kilograms of graphite powders, add 10 kilograms of nmp solutions that contain 5% Kynoar, stirring makes cathode size, this cathode size is coated on the Copper Foil dries, and makes negative plate.By 7 ampere-hour cell production process above-mentioned positive and negative plate is assembled into battery; Testing the average discharge capacity of this batch battery 0.2C is 6.72 ampere-hours; The average discharge capacity of 1C is 6.33 ampere-hours, and 1C capacity/0.2C capacity=94.2% is full of electricity 60 degree storages after 7 days with this batch battery; 0.2C average discharge capacity is 6.15 ampere-hours, residual capacity is 91.5%.
Claims (8)
1. a Battery And Its Manufacturing Methods that uses carbon-free LiFePO4 as positive pole is characterized in that this battery positive electrode active material is main with carbon-free LiFePO4;
2. Battery And Its Manufacturing Methods that uses carbon-free LiFePO4 as positive pole; The positive pole that it is characterized in that this battery is at first active material, conductive agent, dispersant to be ground to below 5 microns through the nanometer mill; Add binder solution then and process anode sizing agent, be coated in to dry on the collector and process;
3. the positive active material of claim 1 described this battery is the mixture of carbon-free LiFePO4 or carbon-free LiFePO4 and other positive electrode, and in addition positive pole also comprises conductive agent, binding agent, dispersant etc.;
4. claim 2 described other positive electrodes include but not limited to cobalt acid lithium, LiMn2O4, lithium nickelate, nickle cobalt lithium manganate etc.;
5. claim 2 said conductive agents include but not limited to acetylene black, carbon black, graphite, CNT etc.;
6. claim 2 said binding agents include but not limited to Kynoar (PVDF), polytetrafluoroethylene (PTFE), butadiene-styrene rubber (SBR), CMC (CMC) etc.;
7. claim 2 said dispersants include but not limited to polyvinyl alcohol, polyethylene glycol, polyvinylpyrrolidone etc.;
8. the negative pole of claim 1 said battery includes but not limited to graphite, carbonaceous mesophase spherules, hard carbon, soft carbon, lithium titanate etc.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2010102538241A CN102376980A (en) | 2010-08-07 | 2010-08-07 | Cell with carbon-free lithium iron phosphate as anode and manufacturing method thereof |
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| CN2010102538241A CN102376980A (en) | 2010-08-07 | 2010-08-07 | Cell with carbon-free lithium iron phosphate as anode and manufacturing method thereof |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103531794A (en) * | 2013-10-28 | 2014-01-22 | 金瑞新材料科技股份有限公司 | Lithium ion battery positive material lithium ferrous phosphate and preparation method |
| CN104703919A (en) * | 2012-08-09 | 2015-06-10 | 雷诺两合公司 | Method for preparing partially surface-protected active materials for lithium batteries |
| CN104779368A (en) * | 2015-04-15 | 2015-07-15 | 东莞市创明电池技术有限公司 | Preparation method of lithium ion battery positive plate and lithium battery manufactured thereby |
| CN104979526A (en) * | 2014-04-04 | 2015-10-14 | 河南科隆新能源有限公司 | Lithium ion battery positive slurry and preparation method thereof |
| CN107565155A (en) * | 2017-08-23 | 2018-01-09 | 宁波维科新能源科技有限公司 | A kind of lithium ion battery |
| CN107749456A (en) * | 2016-11-28 | 2018-03-02 | 万向二三股份公司 | A kind of oil system positive pole and preparation method thereof |
| CN108574112A (en) * | 2017-08-08 | 2018-09-25 | 江苏智航新能源有限公司 | The quick charging battery of long circulation life |
| CN109888184A (en) * | 2019-02-25 | 2019-06-14 | 天津艾克凯胜石墨烯科技有限公司 | A kind of graphene lithium ion battery flexibility anode thin film and preparation method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1734825A (en) * | 2005-08-08 | 2006-02-15 | 河南环宇集团有限公司 | Preparation method for high rate phosphate lithium ion battery and battery prepared thereby |
| CN101037195A (en) * | 2007-03-16 | 2007-09-19 | 厦门大学 | LiFePO4 cathode material based on P site doped and preparation method thereof |
| CN101567469A (en) * | 2008-07-08 | 2009-10-28 | 周雨方 | Power polymer lithium ion battery and fabricating process thereof |
| CN101628714A (en) * | 2009-07-27 | 2010-01-20 | 深圳市德方纳米科技有限公司 | Carbon-free nanoscale lithium iron phosphate and preparation method thereof |
-
2010
- 2010-08-07 CN CN2010102538241A patent/CN102376980A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1734825A (en) * | 2005-08-08 | 2006-02-15 | 河南环宇集团有限公司 | Preparation method for high rate phosphate lithium ion battery and battery prepared thereby |
| CN101037195A (en) * | 2007-03-16 | 2007-09-19 | 厦门大学 | LiFePO4 cathode material based on P site doped and preparation method thereof |
| CN101567469A (en) * | 2008-07-08 | 2009-10-28 | 周雨方 | Power polymer lithium ion battery and fabricating process thereof |
| CN101628714A (en) * | 2009-07-27 | 2010-01-20 | 深圳市德方纳米科技有限公司 | Carbon-free nanoscale lithium iron phosphate and preparation method thereof |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104703919A (en) * | 2012-08-09 | 2015-06-10 | 雷诺两合公司 | Method for preparing partially surface-protected active materials for lithium batteries |
| CN104703919B (en) * | 2012-08-09 | 2017-07-28 | 雷诺两合公司 | Method of the part by the active material of surface protection for preparing lithium battery |
| CN103531794A (en) * | 2013-10-28 | 2014-01-22 | 金瑞新材料科技股份有限公司 | Lithium ion battery positive material lithium ferrous phosphate and preparation method |
| CN104979526A (en) * | 2014-04-04 | 2015-10-14 | 河南科隆新能源有限公司 | Lithium ion battery positive slurry and preparation method thereof |
| CN104779368A (en) * | 2015-04-15 | 2015-07-15 | 东莞市创明电池技术有限公司 | Preparation method of lithium ion battery positive plate and lithium battery manufactured thereby |
| CN107749456A (en) * | 2016-11-28 | 2018-03-02 | 万向二三股份公司 | A kind of oil system positive pole and preparation method thereof |
| CN108574112A (en) * | 2017-08-08 | 2018-09-25 | 江苏智航新能源有限公司 | The quick charging battery of long circulation life |
| CN107565155A (en) * | 2017-08-23 | 2018-01-09 | 宁波维科新能源科技有限公司 | A kind of lithium ion battery |
| CN109888184A (en) * | 2019-02-25 | 2019-06-14 | 天津艾克凯胜石墨烯科技有限公司 | A kind of graphene lithium ion battery flexibility anode thin film and preparation method thereof |
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Application publication date: 20120314 |