CN101667658A - Iron phosphate lithium-based blended anode material series lithium ion battery - Google Patents
Iron phosphate lithium-based blended anode material series lithium ion battery Download PDFInfo
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- CN101667658A CN101667658A CN200910308493A CN200910308493A CN101667658A CN 101667658 A CN101667658 A CN 101667658A CN 200910308493 A CN200910308493 A CN 200910308493A CN 200910308493 A CN200910308493 A CN 200910308493A CN 101667658 A CN101667658 A CN 101667658A
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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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Abstract
The invention discloses a lithium ion battery, anode materials of which comprise (by weight percentage): 50%-85% of lithium iron phosphate, 5%-40% of transition metal oxide or mixture of multi-elementanode material, 1%-5% of nanometer carbon fibre, 1%-5% of superconducting carbon black and 5%-15% of polyvinylidene fluoride or polytetrafluoroethylene; cathode materials comprises the following components (by weight percentage): 80%-95% of graphite, 1%-5% of nanometer carbon fibre, 1%-5% of superconducting carbon black and 5%-15% of sodium carboxymethylcellulose, wherein a current collector of the anode is Al foil and the current collector of the cathode is Cu foil; and the anode and the cathode are manufactured by a method of coating on a metal foil or rolling and pressing membrane on a metal gauze. A diaphragm is arranged between a negative electrode and a positive electrode and is formed to a battery cell in a lamination mode or winding mode. The material of the battery shell is stainless steel or aluminum or plastic. The lithium ion battery is characterized by high safety, high specific energy and high working voltage platform.
Description
Technical field
The present invention relates to a kind of chemical power source, in particular, it relates to a kind of lithium ion battery.
Background technology
At present, on the market common lithium ion battery mainly with pure transition metal oxide as positive electrode, but there is certain problem in this pure material.Though as the lithium ion battery that is positive pole with pure cobalt acid lithium material higher specific energy is arranged, has safety problem; Though the lithium ion battery that is positive pole with pure lithium, cobalt, nickel and manganese acid lithium ternary material is the battery of positive pole than pure cobalt acid lithium material, makes moderate progress in fail safe, can not fundamentally solve safety problem; Though the pure ferric phosphate lithium battery has fundamentally solved the fail safe of battery, also brought a lot of negative effects, low as the battery specific energy, working voltage platform is also low.
Summary of the invention
The technical problem to be solved in the present invention is, the iron phosphate lithium-based blended anode material series lithium ion battery of a kind of safety of many uses, high, high-energy-density, high voltage platform is provided, to overcome the deficiency that existing lithium ion battery exists, avoid pure transition metal oxide to cross low and safety problem as battery specific energy, workbench that anode material for lithium-ion batteries brought.
Technical scheme of the present invention is: positive electrode is made up of active material, conductive agent, adhesive; Wherein, active material is mixed by LiFePO4 and transition metal oxide, and this transition metal oxide comprises cobalt acid lithium, LiMn2O4, lithium nickelate, cobalt nickel LiMn2O4; Conductive agent is mixed by carbon nano-fiber, superconduction carbon black or both and forms; Adhesive is made up of Kynoar or polytetrafluoroethylene.
In the above-mentioned technical scheme, positive electrode comprises following component (by weight percentage): LiFePO4 30%～85%, transition metal oxide 5%～60%, carbon nano-fiber 1%～5%, superconduction carbon black 1%～5%, Kynoar or polytetrafluoroethylene 5%～15%; Negative pole comprises following component (by weight percentage): graphite 80%～95%, carbon nano-fiber 1%～5%, superconduction carbon black 1%～5%, sodium carboxymethylcellulose or polytetrafluoroethylene 5%～15%.Wherein Zheng Ji collector is the Al paper tinsel, and the collector of negative pole is the Cu paper tinsel.Positive electrode, negative electrode adopt the method that is coated with on metal forming to make, or make at wire netting by roll-in system mould.Barrier film adopts laminar or coiling form to constitute electric core between negative electrode and positive electrode.The battery container material is stainless steel or aluminium or plastics.
The invention has the beneficial effects as follows: (1) is simple in structure, processing technology is easy, be easy to manufacturing; (2) battery security height; (3) specific energy height; (4) working voltage platform height.
In a word, the safety issue that lithium ion battery of the present invention can avoid existing battery to exist, or specific energy and the low problem of working voltage platform, have good security performance, higher specific energy and working voltage platform, can be widely used in military field and civil area.
Description of drawings
Fig. 1 is a structural representation of the present invention;
Fig. 2 is the vertical view of Fig. 1.
Embodiment
Embodiments of the invention: below by example, the present invention is further illustrated.
Anode formula (by weight percentage): LiFePO4 36%, cobalt acid lithium 50%, carbon nano-fiber 1%, superconduction carbon black 3%, Kynoar 10%;
Cathode formula (by weight percentage): graphite 93%, carbon nano-fiber 1%, superconduction carbon black 1%, sodium carboxymethylcellulose 5%.
Technology:
Anodal collector is the Al paper tinsel, and the collector of negative pole is the Cu paper tinsel.Positive electrode, negative electrode adopt the method that is coated with on metal forming to make.Barrier film adopts coiling form to constitute electric core between negative electrode and positive electrode.The battery container material is a stainless steel.
The battery of above-mentioned each examples preparation carries out normal temperature 0.2C discharge and overcharges safety test, and its result of the test sees Table 1.
The lithium ion battery performance comparison of the different anode formula preparations of table 1
| Discharge capacity (Ah) | Middle threshold voltage (V) | The safety test result |
| ??65 | ?3.68 | Do not explode, not on fire |
As can be seen from the above table, adopt the lithium ion battery of positive electrode preparation of the present invention to have higher voltage platform and well fail safe.
Claims (3)
1. lithium ion battery, it is characterized in that: positive electrode is made up of active material, conductive agent, adhesive; Wherein, active material is mixed by LiFePO4 and transition metal oxide, and this transition metal oxide comprises cobalt acid lithium, LiMn2O4, lithium nickelate or cobalt nickel LiMn2O4; Conductive agent is mixed by carbon nano-fiber, superconduction carbon black or both and forms; Adhesive is made up of Kynoar or polytetrafluoroethylene.
2. lithium ion battery according to claim 1, it is characterized in that: count by weight percentage, positive electrode contains LiFePO4 30%～85%, transition metal oxide 5%～60%, carbon nano-fiber 1%～5%, superconduction carbon black 1%～5%, Kynoar or polytetrafluoroethylene 5%～15%, and the summation of each component is 100%.
3. lithium ion battery according to claim 2 is characterized in that: LiFePO4 36%, cobalt acid lithium 50%, carbon nano-fiber 1%, superconduction carbon black 3%, Kynoar 10%.
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| CN200910308493A CN101667658A (en) | 2009-10-20 | 2009-10-20 | Iron phosphate lithium-based blended anode material series lithium ion battery |
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| CN200910308493A CN101667658A (en) | 2009-10-20 | 2009-10-20 | Iron phosphate lithium-based blended anode material series lithium ion battery |
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| CN101667658A true CN101667658A (en) | 2010-03-10 |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102173403A (en) * | 2011-01-25 | 2011-09-07 | 山东省科学院能源研究所 | Preparation method of micro-nano lithium ferric phosphate (LiFePO4) positive electrode material of lithium-ion battery |
| CN102227030A (en) * | 2011-05-16 | 2011-10-26 | 河源新凌嘉电音有限公司 | Lithium ion battery and preparation method thereof |
| CN102496703A (en) * | 2011-12-31 | 2012-06-13 | 天津得瑞丰凯新材料科技有限公司 | Multiple doped carbon cathode active material and negative electrode used for lithium battery as well as preparation method thereof |
| CN103165897A (en) * | 2011-12-14 | 2013-06-19 | 比亚迪股份有限公司 | A cathode material for lithium-ion batteries, lithium-ion battery cathodes, and lithium-ion batteries |
| CN104347880A (en) * | 2014-10-14 | 2015-02-11 | 东莞新能源科技有限公司 | Lithium ion battery capable of quick charging |
| JP2016069242A (en) * | 2014-09-30 | 2016-05-09 | 旭化成株式会社 | Metal compound composite |
| CN112563508A (en) * | 2020-12-10 | 2021-03-26 | 杭州肄康新材料有限公司 | Lithium ion battery anode material, lithium ion battery anode and lithium ion battery |
| CN114665065A (en) * | 2022-04-28 | 2022-06-24 | 蜂巢能源科技股份有限公司 | Positive pole piece and preparation method and application thereof |
-
2009
- 2009-10-20 CN CN200910308493A patent/CN101667658A/en active Pending
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102173403A (en) * | 2011-01-25 | 2011-09-07 | 山东省科学院能源研究所 | Preparation method of micro-nano lithium ferric phosphate (LiFePO4) positive electrode material of lithium-ion battery |
| CN102173403B (en) * | 2011-01-25 | 2013-08-21 | 山东省科学院能源研究所 | Preparation method of micro-nano lithium ferric phosphate (LiFePO4) positive electrode material of lithium-ion battery |
| CN102227030A (en) * | 2011-05-16 | 2011-10-26 | 河源新凌嘉电音有限公司 | Lithium ion battery and preparation method thereof |
| CN103165897A (en) * | 2011-12-14 | 2013-06-19 | 比亚迪股份有限公司 | A cathode material for lithium-ion batteries, lithium-ion battery cathodes, and lithium-ion batteries |
| CN103165897B (en) * | 2011-12-14 | 2016-04-27 | 比亚迪股份有限公司 | A kind of anode material for lithium-ion batteries, lithium ion cell positive and lithium ion battery |
| CN102496703A (en) * | 2011-12-31 | 2012-06-13 | 天津得瑞丰凯新材料科技有限公司 | Multiple doped carbon cathode active material and negative electrode used for lithium battery as well as preparation method thereof |
| JP2016069242A (en) * | 2014-09-30 | 2016-05-09 | 旭化成株式会社 | Metal compound composite |
| CN104347880A (en) * | 2014-10-14 | 2015-02-11 | 东莞新能源科技有限公司 | Lithium ion battery capable of quick charging |
| CN112563508A (en) * | 2020-12-10 | 2021-03-26 | 杭州肄康新材料有限公司 | Lithium ion battery anode material, lithium ion battery anode and lithium ion battery |
| CN114665065A (en) * | 2022-04-28 | 2022-06-24 | 蜂巢能源科技股份有限公司 | Positive pole piece and preparation method and application thereof |
| CN114665065B (en) * | 2022-04-28 | 2024-05-28 | 蜂巢能源科技股份有限公司 | Positive electrode plate and preparation method and application thereof |
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Application publication date: 20100310 |