CN101101987A - Lithium ion battery and its prescription of anode material - Google Patents
Lithium ion battery and its prescription of anode material Download PDFInfo
- Publication number
- CN101101987A CN101101987A CNA2007100254879A CN200710025487A CN101101987A CN 101101987 A CN101101987 A CN 101101987A CN A2007100254879 A CNA2007100254879 A CN A2007100254879A CN 200710025487 A CN200710025487 A CN 200710025487A CN 101101987 A CN101101987 A CN 101101987A
- Authority
- CN
- China
- Prior art keywords
- lithium
- ion battery
- prescription
- lithium ion
- anode material
- 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.)
- Pending
Links
- 229910001416 lithium ion Inorganic materials 0.000 title claims abstract description 25
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 title claims abstract description 23
- 239000010405 anode material Substances 0.000 title claims description 9
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 11
- 239000010439 graphite Substances 0.000 claims abstract description 11
- 229910002804 graphite Inorganic materials 0.000 claims abstract description 11
- 239000012535 impurity Substances 0.000 claims abstract description 6
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims description 18
- 229910052744 lithium Inorganic materials 0.000 claims description 18
- OVAQODDUFGFVPR-UHFFFAOYSA-N lithium cobalt(2+) dioxido(dioxo)manganese Chemical compound [Li+].[Mn](=O)(=O)([O-])[O-].[Co+2] OVAQODDUFGFVPR-UHFFFAOYSA-N 0.000 claims description 12
- 239000002253 acid Substances 0.000 claims description 9
- 229910017052 cobalt Inorganic materials 0.000 claims description 9
- 239000010941 cobalt Substances 0.000 claims description 9
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 claims description 9
- 239000003792 electrolyte Substances 0.000 claims description 5
- 239000000203 mixture Substances 0.000 claims description 5
- QGHDLJAZIIFENW-UHFFFAOYSA-N 4-[1,1,1,3,3,3-hexafluoro-2-(4-hydroxy-3-prop-2-enylphenyl)propan-2-yl]-2-prop-2-enylphenol Chemical group C1=C(CC=C)C(O)=CC=C1C(C(F)(F)F)(C(F)(F)F)C1=CC=C(O)C(CC=C)=C1 QGHDLJAZIIFENW-UHFFFAOYSA-N 0.000 claims description 4
- KMTRUDSVKNLOMY-UHFFFAOYSA-N Ethylene carbonate Chemical compound O=C1OCCO1 KMTRUDSVKNLOMY-UHFFFAOYSA-N 0.000 claims description 4
- 229910019142 PO4 Inorganic materials 0.000 claims description 4
- 239000010452 phosphate Substances 0.000 claims description 4
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 claims description 4
- 239000000463 material Substances 0.000 abstract description 4
- BQCIDUSAKPWEOX-UHFFFAOYSA-N 1,1-Difluoroethene Chemical compound FC(F)=C BQCIDUSAKPWEOX-UHFFFAOYSA-N 0.000 abstract 1
- 229910003751 Li(Mn1/3Co1/3Ni1/3)O2 Inorganic materials 0.000 abstract 1
- 229910000625 lithium cobalt oxide Inorganic materials 0.000 abstract 1
- BFZPBUKRYWOWDV-UHFFFAOYSA-N lithium;oxido(oxo)cobalt Chemical compound [Li+].[O-][Co]=O BFZPBUKRYWOWDV-UHFFFAOYSA-N 0.000 abstract 1
- 238000000354 decomposition reaction Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 238000002360 preparation method Methods 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
- Y02E60/10—Energy storage using batteries
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- Battery Electrode And Active Subsutance (AREA)
- Secondary Cells (AREA)
Abstract
The invention is concerned with the description of the anode lithium ion battery material to improve its battery thermal stability, and the proportions are: lithium cobaltoxide 65%-72%, Li(Mn1/3Co1/3Ni1/3)O2 15%-18%, conductive graphite 5%-8%, vinylidene fluoride 2%-4% and the rest are impurity. The anode lithium ion battery is with high heat stability and short-circuits ability.
Description
Technical field
The present invention relates to the prescription of lithium ion battery and positive electrode thereof.
Background technology
At present, generally the lithium ion battery of Shi Yonging is usually said lithium battery, and the main component of its positive electrode is a cobalt acid lithium, and the main component of negative panel material is an electrically conductive graphite, and the main component of electrolyte is ethylene carbonate or lithium hexafluoro phosphate.Because the positive pole of lithium ion battery has selected for use cobalt acid lithium as main material, make lithium ion battery have operating voltage height (average working voltage is 3.7V), steady, the suitable high current charge-discharge of charging/discharging voltage, specific energy height, good cycle and conductivity height, and production technology is simple, characteristics such as preparation easily, has obtained application widely in a lot of fields.But, the thermal stability of the lithium ion battery of current use is also poor, when its internal temperature above 200 ℃, cobalt acid lithium in the positive pole just begins to decompose, oxygen that discharges and battery electrolyte reaction, discharge a large amount of heats, make many lithium ion batteries the phenomenon of heaving in use occur, shortened its useful life.
Summary of the invention
First technical problem to be solved by this invention is: provide a kind of prescription of anode material for lithium-ion batteries, to improve the thermal stability of entire lithium ion battery.
Another technical problem to be solved by this invention is: a kind of lithium ion battery with higher thermal stability is provided.
For solving above-mentioned first technical problem, the technical solution used in the present invention is: the prescription of anode material for lithium-ion batteries, the percentage by weight of its various compositions is respectively: cobalt acid lithium 65%～72%, nickle cobalt lithium manganate 15%～18%, electrically conductive graphite 5%～8% and Kynoar 2%～4%, all the other are impurity.
For solving above-mentioned another technical problem, the technical solution used in the present invention is: lithium ion battery comprises: main component is that negative pole, the main component of graphite is the electrolyte of ethylene carbonate or lithium hexafluoro phosphate, and the positive pole that comprises above-mentioned prescription.
The invention has the beneficial effects as follows: because nickle cobalt lithium manganate (PLB) has higher thermal stability, after having added nickle cobalt lithium manganate (PLB) in the anode material for lithium-ion batteries, the thermal stability of entire cell has increased significantly, this lithium ion cell charging to the heat decomposition temperature of 4.5V still than the lithium cell charging that does not add nickle cobalt lithium manganate in the positive electrode to the heat decomposition temperature height of 4.2V nearly 100 ℃.In addition, the short-circuit capability of lithium battery of the present invention has obtained further raising.
Embodiment
Embodiment 1:
The prescription of anode material for lithium-ion batteries of the present invention, the percentage by weight of its various compositions is respectively: cobalt acid lithium 65%, nickle cobalt lithium manganate 18%, electrically conductive graphite 8% and Kynoar 4%, all the other are impurity.
Embodiment 2:
The prescription of anode material for lithium-ion batteries of the present invention, the percentage by weight of its various compositions is respectively: cobalt acid lithium 72%, nickle cobalt lithium manganate 15%, electrically conductive graphite 5% and Kynoar 2%, all the other are impurity.
Embodiment 3:
The prescription of anode material for lithium-ion batteries of the present invention, the percentage by weight of its various compositions is respectively: cobalt acid lithium 70%, nickle cobalt lithium manganate 16%, electrically conductive graphite 7% and Kynoar 3%, all the other are impurity.
Lithium ion battery of the present invention, comprise: main component is that negative pole, the main component of graphite is the electrolyte of ethylene carbonate or lithium hexafluoro phosphate, and the positive pole that cobalt acid lithium, nickle cobalt lithium manganate, electrically conductive graphite and four kinds of materials of Kynoar are made according to the proportioning described in above-mentioned any embodiment.
Because nickle cobalt lithium manganate (PLB) has higher thermal stability, after having added nickle cobalt lithium manganate (PLB) in the anode material for lithium-ion batteries, the thermal stability of entire cell has increased significantly, this lithium ion cell charging to the heat decomposition temperature of 4.5V still than the lithium cell charging that does not add nickle cobalt lithium manganate in the positive electrode to the heat decomposition temperature height of 4.2V nearly 100 ℃.In addition, the short-circuit capability of lithium battery of the present invention has obtained further raising.
Claims (2)
1. the prescription of anode material for lithium-ion batteries, the percentage by weight of its various compositions is respectively: cobalt acid lithium 65%～72%, nickle cobalt lithium manganate 15%～18%, electrically conductive graphite 5%～8% and Kynoar 2%～4%, all the other are impurity.
2. lithium ion battery, comprising: main component is that negative pole, the main component of graphite is the electrolyte of ethylene carbonate or lithium hexafluoro phosphate, it is characterized in that: also comprise the positive pole that contains the described prescription of claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100254879A CN101101987A (en) | 2007-07-31 | 2007-07-31 | Lithium ion battery and its prescription of anode material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100254879A CN101101987A (en) | 2007-07-31 | 2007-07-31 | Lithium ion battery and its prescription of anode material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101101987A true CN101101987A (en) | 2008-01-09 |
Family
ID=39036158
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2007100254879A Pending CN101101987A (en) | 2007-07-31 | 2007-07-31 | Lithium ion battery and its prescription of anode material |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101101987A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101752558A (en) * | 2008-12-22 | 2010-06-23 | 深圳市比克电池有限公司 | Lithium ion battery anode material and preparation method thereof |
| CN101685878B (en) * | 2008-09-27 | 2013-09-18 | 深圳市比克电池有限公司 | Preparation method of polymer lithium ion battery |
| CN111900363A (en) * | 2020-08-21 | 2020-11-06 | 珠海冠宇电池股份有限公司 | Positive active material, and pole piece and lithium ion battery containing positive active material |
| CN112072071A (en) * | 2020-09-04 | 2020-12-11 | 珠海冠宇电池股份有限公司 | Positive pole piece and lithium ion battery comprising same |
-
2007
- 2007-07-31 CN CNA2007100254879A patent/CN101101987A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101685878B (en) * | 2008-09-27 | 2013-09-18 | 深圳市比克电池有限公司 | Preparation method of polymer lithium ion battery |
| CN101752558A (en) * | 2008-12-22 | 2010-06-23 | 深圳市比克电池有限公司 | Lithium ion battery anode material and preparation method thereof |
| WO2010072136A1 (en) * | 2008-12-22 | 2010-07-01 | 深圳市比克电池有限公司 | Positive material of lithium ion battery and method for preparing the same |
| US9484577B2 (en) | 2008-12-22 | 2016-11-01 | Shenzhen Bak Battery Co., Ltd. | Positive electrode materials for lithium ion batteries and process for preparing the same |
| CN111900363A (en) * | 2020-08-21 | 2020-11-06 | 珠海冠宇电池股份有限公司 | Positive active material, and pole piece and lithium ion battery containing positive active material |
| CN112072071A (en) * | 2020-09-04 | 2020-12-11 | 珠海冠宇电池股份有限公司 | Positive pole piece and lithium ion battery comprising same |
| CN112072071B (en) * | 2020-09-04 | 2022-06-14 | 珠海冠宇电池股份有限公司 | Positive pole piece and lithium ion battery comprising same |
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| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |