CN1697210A - Composite positive plate of lithium ion battery and composition method - Google Patents
Composite positive plate of lithium ion battery and composition method Download PDFInfo
- Publication number
- CN1697210A CN1697210A CNA2005100433348A CN200510043334A CN1697210A CN 1697210 A CN1697210 A CN 1697210A CN A2005100433348 A CNA2005100433348 A CN A2005100433348A CN 200510043334 A CN200510043334 A CN 200510043334A CN 1697210 A CN1697210 A CN 1697210A
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- China
- Prior art keywords
- lithium
- positive plate
- ion battery
- pole piece
- high lithium
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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
Abstract
High lithium material is combined to positive plate of lithium ion battery. Combining method includes following approches: coating, printing or depositing high lithium material onto positive plate in low quantity of lithium; or mixing high lithium material with positive plate in low quantity of lithium evenly; or diaphragm covered by high lithium material faced to positive plate. Active effects are: (1) lithium in high lithium material can compensate need of irreversible capacity for cathode material when battery is charged or discharged at first time. Thus, capacity produced according to the disclosed method is larger than capacity of battery not containing high lithium material; (2) controlling content in high lithium material is able to control the said loss of irreversible capacity.
Description
Technical field
The present invention relates to based lithium-ion battery positive plate.
Background technology
Lithium ion is being subjected to extensive attention for over ten years as the green high-capacity power supply, and it has the energy height, cyclicity is good and the characteristics of low self-discharge.In lithium ion battery first charge-discharge process, electrode material and electrolyte react on liquid-solid phase boundary, form the passivation layer that one deck is covered in electrode material surface, passivation layer has the characteristic of solid electrolyte, therefore, this tunic is also referred to as the SEI film, i.e. Solidelectrolyteinterphase (solid electrolyte boundary).The formation of SEI film produces significant effects to the performance of lithium ion battery, makes the first charge-discharge irreversible capacity increase, and has reduced the energy of lithium ion battery.
Summary of the invention
The purpose of this invention is to provide a kind of compound potassium ion battery plus plate sheet and complex method thereof, descend to overcome the capacity that in the first charge-discharge process, brings, thereby improve battery performance owing to material surface deposition one deck solid electrolyte film (SEI).
Technical scheme is:
This anode composite sheet is to be compounded with high lithium material on based lithium-ion battery positive plate.
The complex method of wherein said positive plate comprises following five kinds:
1, the positive electrode of the associated low lithium amount of high lithium material is evenly mixed,, be prepared into anode pole piece by pole piece preparation technology.
2, the method for high lithium material by coating is coated on the anode pole piece of low lithium amount, forms the anode pole piece that covers high lithium material.
3, high lithium material is printed on by method of printing on the anode pole piece of low lithium amount, forms the anode pole piece that covers high lithium material.
4, the method for high lithium material by chemistry or physical deposition is deposited on the anode pole piece, forms the anode pole piece that covers high lithium material.
5, high lithium material is prepared on barrier film, the high lithium material face with barrier film is relative with the positive plate of low lithium amount then, forms the positive plate of high lithium material
Above-mentioned high lithium material is meant with its mutually compound positive electrode and compares that its unit mole of lithium content or unit mass lithium content are than higher material, and it comprises various lithium ion compounds and lithium metal.
Its good effect is:
1,, therefore, to be higher than the capacity of lithium ion battery of not containing high lithium material with the capacity of the lithium ion battery of this kind method formation because the lithium in the high lithium material in the composite positive pole can remedy irreversible capacity needs in first charge-discharge pond in the negative material.
2, high lithium material is compounded on the positive electrode of low lithium amount,, can controls the irreversible capacity loss that negative pole brings fully by control high lithium material content.
Embodiment
In order to be illustrated more clearly in the present invention, to enumerate following examples technical scheme is further described.
Embodiment 1: Li
16Nb
2N
80 evenly mixes with lithium cobaltate cathode material, and by pole piece preparation technology, system respectively becomes anode pole piece.
Embodiment 2: metallic lithium powder is uniformly coated on the anode pole piece of cobalt acid lithium, the lithium powder particles is approximately about 50um, forms the anode pole piece that covers high lithium material.
Embodiment 3: Li
16Nb
2N
8O is printed on the lithium cobaltate cathode pole piece by method of printing, forms the anode pole piece that covers high lithium material.
Embodiment 4: Li
2C
2Method by chemistry or physical deposition is deposited on the anode pole piece of lithium nickelate, forms the anode pole piece that covers high lithium material.
Embodiment 5: the metallic lithium powder slurry prepared on barrier film by method of printing, and relative the barrier film face that the lithium powder is arranged with the lithium cobaltate cathode pole piece, the anode pole piece of formation high lithium material.
Claims (6)
1, a kind of compound potassium ion battery plus plate sheet is characterized in that being compounded with high lithium material on based lithium-ion battery positive plate.
2, the complex method of the described based lithium-ion battery positive plate of a kind of claim 1 is characterized in that, contains the different lithium material of lithium amount to two kinds and evenly mixes, and by pole piece preparation technology, forms anode pole piece.
3, the complex method of the described based lithium-ion battery positive plate of a kind of claim 1 is characterized in that, the method for high lithium material by coating is coated on the anode pole piece of low lithium amount, forms the anode pole piece that covers high lithium material.
4, the complex method of the described based lithium-ion battery positive plate of a kind of claim 1 is characterized in that, high lithium material is printed on by method of printing on the anode pole piece of low lithium amount, forms the anode pole piece that covers high lithium material.
5, the complex method of the described based lithium-ion battery positive plate of a kind of claim 1 is characterized in that, the method for high lithium material by deposition is deposited on the anode pole piece of low lithium amount, forms the anode pole piece that covers high lithium material.
6, the complex method of the described based lithium-ion battery positive plate of a kind of claim 1 is characterized in that, on barrier film, the high lithium material face with barrier film is relative with the positive plate of low lithium amount then the high lithium material preparation, forms the positive plate of high lithium material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2005100433348A CN1697210A (en) | 2005-04-16 | 2005-04-16 | Composite positive plate of lithium ion battery and composition method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2005100433348A CN1697210A (en) | 2005-04-16 | 2005-04-16 | Composite positive plate of lithium ion battery and composition method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1697210A true CN1697210A (en) | 2005-11-16 |
Family
ID=35349809
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2005100433348A Pending CN1697210A (en) | 2005-04-16 | 2005-04-16 | Composite positive plate of lithium ion battery and composition method |
Country Status (1)
| Country | Link |
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| CN (1) | CN1697210A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104752752A (en) * | 2015-04-01 | 2015-07-01 | 广东烛光新能源科技有限公司 | Lithium ion battery naked cell and preparation method of lithium ion battery comprising naked cell |
| CN106505202A (en) * | 2015-09-08 | 2017-03-15 | 中国科学院物理研究所 | Electrode material of one class secondary cell and its production and use |
| CN110246699A (en) * | 2019-05-17 | 2019-09-17 | 中国科学院电工研究所 | A kind of anode electrode piece of lithium-ion capacitor, lithium-ion capacitor and its cathode pre-embedding lithium method |
| CN110767880A (en) * | 2018-07-25 | 2020-02-07 | 微宏动力***（湖州）有限公司 | Lithium supplement slurry for lithium secondary battery and preparation method of lithium secondary battery |
-
2005
- 2005-04-16 CN CNA2005100433348A patent/CN1697210A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104752752A (en) * | 2015-04-01 | 2015-07-01 | 广东烛光新能源科技有限公司 | Lithium ion battery naked cell and preparation method of lithium ion battery comprising naked cell |
| CN106505202A (en) * | 2015-09-08 | 2017-03-15 | 中国科学院物理研究所 | Electrode material of one class secondary cell and its production and use |
| CN110767880A (en) * | 2018-07-25 | 2020-02-07 | 微宏动力***（湖州）有限公司 | Lithium supplement slurry for lithium secondary battery and preparation method of lithium secondary battery |
| CN110246699A (en) * | 2019-05-17 | 2019-09-17 | 中国科学院电工研究所 | A kind of anode electrode piece of lithium-ion capacitor, lithium-ion capacitor and its cathode pre-embedding lithium method |
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
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