CN1571198A - Lithium secondary battery anode and lithium secondary battery using the same - Google Patents
Lithium secondary battery anode and lithium secondary battery using the same Download PDFInfo
- Publication number
- CN1571198A CN1571198A CNA03139826XA CN03139826A CN1571198A CN 1571198 A CN1571198 A CN 1571198A CN A03139826X A CNA03139826X A CN A03139826XA CN 03139826 A CN03139826 A CN 03139826A CN 1571198 A CN1571198 A CN 1571198A
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- Prior art keywords
- secondary battery
- lithium secondary
- lithium
- cathode plate
- oxide
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/62—Selection of inactive substances as ingredients for active masses, e.g. binders, fillers
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/13—Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators; Processes of manufacture thereof
- H01M4/131—Electrodes based on mixed oxides or hydroxides, or on mixtures of oxides or hydroxides, e.g. LiCoOx
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/36—Selection of substances as active materials, active masses, active liquids
- H01M4/362—Composites
- H01M4/364—Composites as mixtures
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/36—Selection of substances as active materials, active masses, active liquids
- H01M4/48—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides
- H01M4/50—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of manganese
- H01M4/505—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of manganese of mixed oxides or hydroxides containing manganese for inserting or intercalating light metals, e.g. LiMn2O4 or LiMn2OxFy
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/36—Selection of substances as active materials, active masses, active liquids
- H01M4/48—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides
- H01M4/52—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of nickel, cobalt or iron
- H01M4/525—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of nickel, cobalt or iron of mixed oxides or hydroxides containing iron, cobalt or nickel for inserting or intercalating light metals, e.g. LiNiO2, LiCoO2 or LiCoOxFy
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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
The invention relates to a lithium secondary battery anode, including active anode material and water absorbent scattered in the active anode material. The active anode material includes Li-Mn oxide, Li-Ni oxide, Li-Co oxide, and other compound oxides of Li and transition metal; the water absorbent includes lithiated molecular sieve, activated carbon, active aluminum oxide, silica gel, calcium oxide, calcium sulfate, etc, and has strong water absorptivity with dew point lower than -56deg.C. The water absorbent can completely absorb residual water in lithium secondary battery manufacturing procedure and osmotic water due to air permeability of water molecules as use, preventing the poisoning of lithium ion battery, thus prolonging the service life of lithium secondary battery. The invention also relates to a lithium secondary battery using this anode.
Description
[technical field]
The present invention relates to lithium secondary battery, relate in particular to a kind of cathode plate for lithium secondary battery.
[background technology]
Lithium secondary battery has been widely used in the consumption electronic products such as mobile phone, notebook computer because it has good characteristics such as high-energy-density, high electromotive force and low self-discharge.
Lithium secondary battery of the present invention comprises lithium ion battery and high-polymer lithium battery.Lithium ion battery be with material with carbon elements such as Delanium or native graphites as negative pole, with metal oxides such as lithium cobalt, lithium nickel, lithium manganese as positive electrode, with the secondary cell of anhydrous organic solvent as electrolyte.High-polymer lithium battery comprises two classes, and a class is that electrode is the lithium ion battery of macromolecular material, and another kind of is that electrolyte is the lithium ion battery of solid-state or colloidal state polymer.
Lithium secondary battery all adopts organic solvent or organic polymer as electrolyte, require inside battery moisture-free, because lithium ion battery voltage is up to 3～4V, and the decomposition voltage of water is 1.23V, if inside battery contains moisture content, discharge and recharge moisture content decomposition down at high voltage, can cause degradation of cell performance, reduce the useful life of lithium secondary battery.
Therefore, need strict control relative air humidity less than 0.04% (being Dew point=-56 ℃) in the battery processing procedure.But the control relative air humidity needs expensive less than 0.04%, and still can't avoid residual a certain amount of hydrone in the preparation process.In addition, lithium secondary battery also can't be avoided the hydrone impervious after long-term the use, causes the battery functi on forfeiture.
[summary of the invention]
The purpose of this invention is to provide a kind of inside battery hydrone that prevents and make the positive pole of lithium secondary battery performance degradation.
Another purpose of the present invention provides a kind of lithium secondary battery that contains above-mentioned positive pole.
The invention provides a kind of cathode plate for lithium secondary battery, this positive pole comprises positive electrode active materials and is scattered in water absorbing agent in the positive electrode active materials, and positive electrode active materials comprises the composite oxides of lithium such as lithium manganese oxide, lithium nickel oxide, lithium and cobalt oxides and transition metal; Water absorbing agent comprises lithiumation molecular sieve, activated carbon, activated alumina, silica gel, calcium oxide, calcium sulfate etc., has dew point to be lower than-56 ℃ strong absorptive, and particle size range is 2 nanometers to 10 micron.
The present invention also provides a kind of lithium secondary battery that contains above-mentioned positive pole.
Compared with prior art, positive pole provided by the invention has the following advantages: water absorbing agent makes an addition in the positive electrode active materials, can adsorb the residual or moisture content that infiltrates when using in the lithium secondary battery processing procedure fully, reduce the cell preparation cost, prevent that lithium ion battery is poisoned in the battery use, thereby prolong the useful life of lithium secondary battery.
[description of drawings]
Fig. 1 is a cathode plate for lithium secondary battery structural representation of the present invention.
Fig. 2 is a lithium secondary battery internal structure schematic diagram of the present invention.
[embodiment]
As shown in Figure 1, cathode plate for lithium secondary battery 10 of the present invention comprises collector body 101, positive electrode active materials 102, is scattered in water absorbing agent 103 and binding agent (figure does not indicate) in the positive electrode active materials, positive electrode active materials 102 forms one with water absorbing agent 1 03 by binding agent, is coated on the surface of collector body 101.Wherein water absorbing agent 103 comprises lithiumation molecular sieve, activated carbon, activated alumina, silica gel, calcium oxide, calcium sulfate etc., has dew point to be lower than-56 ℃ strong absorptive, and particle size range is 2 nanometers to 10 micron; Positive electrode active materials 102 comprises the composite oxides of lithiums such as lithium manganese oxide, lithium nickel oxide, lithium and cobalt oxides and transition metal; Collector body 101 is metal base or carbon-point, has excellent conductive performance; Binding agent generally uses polytetrafluoroethylene, Kynoar, polyacrylonitrile, poly(ethylene oxide), ethylene-propylene rubber etc.
The preparation method of cathode plate for lithium secondary battery of the present invention may further comprise the steps:
Positive electrode active materials 102 powders, water absorbing agent 103 and binding agent are mixed, and the suitable dispersant (as the N-methyl pyrrolidone) of using the solubilized binding agent is coated on collector body 101 surfaces with after its dispersion, the pulp with slurries, dry getting final product.
As shown in Figure 2, lithium secondary battery 20 of the present invention comprises a housing (figure indicates) and places housing interior negative pole 11, electrolyte 12, barrier film 13 and provided by the present invention anodal 10.
The negative pole 11 of lithium ion battery and high-polymer lithium battery mainly comprises collector body and is formed at the active material on collector body surface, as material with carbon element, comprise graphite, carbon dust, carbon fiber or carbon nano-tube, in addition, some transition metal or its oxide also can be selected for use, as tin and oxide thereof.
For high-polymer lithium battery, electrolyte 12 is polymer dielectric, as contains polyethylene oxygen alkane, polypropylene oxygen alkane, polyacrylonitrile, polyvinyl chloride, Kynoar of lithium salts such as lithium perchlorate, LiBF4, lithium hexafluoro phosphate, trifluoromethyl sulfonic acid lithium, hexafluoroarsenate lithium etc.
Battery container comprises metal, alloy, plastics or its combination.
Lithium secondary battery of the present invention can have Any shape, as cylindric, prism-shaped, sheet or button-type.
The preparation of lithium secondary battery of the present invention can be adopted the known method for preparing lithium secondary battery of any public.Particularly, a kind of method commonly used is included in positive pole 10 and the negative pole of placing in the housing (figure indicate) by barrier film 13 couplings 11, subsequently toward wherein injecting electrolyte and with its sealing.The electrolytical method of preferred vacuum injection conduct injection, but it is not particularly limited.Also the electrode 10,11 of coupling can be flooded with electrolyte solution before in placing housing.
Compared with prior art, positive electrode provided by the invention has the following advantages: water absorbing agent makes an addition in the positive electrode active materials, can adsorb the residual or moisture content that infiltrates when using in the lithium secondary battery processing procedure fully, reduce the cell preparation cost, prevent that lithium ion battery is poisoned in the battery use, thereby prolong the useful life of lithium secondary battery.
Claims (9)
1. cathode plate for lithium secondary battery is characterized in that it comprises positive electrode active materials and is scattered in water absorbing agent in the positive electrode active materials.
2. cathode plate for lithium secondary battery as claimed in claim 1 is characterized in that water absorbing agent comprises lithiumation molecular sieve, activated carbon, activated alumina, silica gel, calcium oxide or calcium sulfate.
3. cathode plate for lithium secondary battery as claimed in claim 1 is characterized in that water absorbing agent has dew point and is lower than-56 ℃ strong absorptive.
4. cathode plate for lithium secondary battery as claimed in claim 1, the particle size range that it is characterized in that water absorbing agent are 2 nanometers to 10 micron.
5. cathode plate for lithium secondary battery as claimed in claim 1 is characterized in that positive electrode active materials comprises lithium manganese oxide, lithium nickel oxide or lithium and cobalt oxides.
6. cathode plate for lithium secondary battery as claimed in claim 1 is characterized in that this positive pole also comprises collector body and binding agent, and positive electrode active materials and water absorbing agent form one by the binding agent bonding, are coated on the surface of collector body.
7. cathode plate for lithium secondary battery as claimed in claim 6 is characterized in that collector body comprises metal base or carbon-point.
8. cathode plate for lithium secondary battery as claimed in claim 6 is characterized in that binding agent comprises polytetrafluoroethylene, Kynoar, polyacrylonitrile, poly(ethylene oxide) or ethylene-propylene rubber.
9. lithium secondary battery comprises housing and places positive pole, negative pole, organic bath and barrier film in the housing, it is characterized in that this positive pole comprises positive electrode active materials and is scattered in water absorbing agent in the positive electrode active materials.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA03139826XA CN1571198A (en) | 2003-07-12 | 2003-07-12 | Lithium secondary battery anode and lithium secondary battery using the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA03139826XA CN1571198A (en) | 2003-07-12 | 2003-07-12 | Lithium secondary battery anode and lithium secondary battery using the same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1571198A true CN1571198A (en) | 2005-01-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA03139826XA Pending CN1571198A (en) | 2003-07-12 | 2003-07-12 | Lithium secondary battery anode and lithium secondary battery using the same |
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| CN (1) | CN1571198A (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101710623B (en) * | 2009-11-24 | 2011-06-15 | 武汉孚安特科技有限公司 | Method for solving gas expansion of lithium-manganese dioxide flexible packaging battery and cathode material of lithium-manganese dioxide flexible packaging battery |
| CN102709521A (en) * | 2012-06-12 | 2012-10-03 | 宁德新能源科技有限公司 | Lithium ion battery and anode thereof |
| CN103268958A (en) * | 2013-05-22 | 2013-08-28 | 江苏富朗特新能源有限公司 | Processing method of lithium-ion battery electrolyte |
| CN105406040A (en) * | 2015-11-03 | 2016-03-16 | 湖南长远锂科有限公司 | Coated and modified high-nickel ternary cathode material and preparation method thereof |
| CN106848379A (en) * | 2015-11-11 | 2017-06-13 | 株式会社Lg化学 | Electrode of lithium secondary cell containing hygroscopic matter and the lithium secondary battery comprising it |
| CN107069018A (en) * | 2015-12-03 | 2017-08-18 | 通用汽车环球科技运作有限责任公司 | Addition dries metal oxide or metal nitride particles to improve battery cycle life and power-performance |
| CN109742391A (en) * | 2019-01-10 | 2019-05-10 | 上海大学(浙江·嘉兴)新兴产业研究院 | A kind of nickelic lithium ion battery, cell positive material and preparation method thereof |
| US10490821B2 (en) | 2015-11-11 | 2019-11-26 | Lg Chem, Ltd. | Electrode for lithium secondary battery comprising hygroscopic material and lithium secondary battery comprising the same |
| CN112216814A (en) * | 2020-12-09 | 2021-01-12 | 江苏时代新能源科技有限公司 | Electrode plate, secondary battery, preparation method of secondary battery and device containing secondary battery |
-
2003
- 2003-07-12 CN CNA03139826XA patent/CN1571198A/en active Pending
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101710623B (en) * | 2009-11-24 | 2011-06-15 | 武汉孚安特科技有限公司 | Method for solving gas expansion of lithium-manganese dioxide flexible packaging battery and cathode material of lithium-manganese dioxide flexible packaging battery |
| CN102709521A (en) * | 2012-06-12 | 2012-10-03 | 宁德新能源科技有限公司 | Lithium ion battery and anode thereof |
| CN103268958A (en) * | 2013-05-22 | 2013-08-28 | 江苏富朗特新能源有限公司 | Processing method of lithium-ion battery electrolyte |
| CN105406040B (en) * | 2015-11-03 | 2019-01-11 | 湖南长远锂科有限公司 | Nickelic tertiary cathode material of coating modification and preparation method thereof |
| CN105406040A (en) * | 2015-11-03 | 2016-03-16 | 湖南长远锂科有限公司 | Coated and modified high-nickel ternary cathode material and preparation method thereof |
| CN106848379A (en) * | 2015-11-11 | 2017-06-13 | 株式会社Lg化学 | Electrode of lithium secondary cell containing hygroscopic matter and the lithium secondary battery comprising it |
| CN106848379B (en) * | 2015-11-11 | 2019-07-26 | 株式会社Lg化学 | Electrode of lithium secondary cell containing hygroscopic matter and the lithium secondary battery comprising it |
| US10490821B2 (en) | 2015-11-11 | 2019-11-26 | Lg Chem, Ltd. | Electrode for lithium secondary battery comprising hygroscopic material and lithium secondary battery comprising the same |
| CN107069018A (en) * | 2015-12-03 | 2017-08-18 | 通用汽车环球科技运作有限责任公司 | Addition dries metal oxide or metal nitride particles to improve battery cycle life and power-performance |
| US10461373B2 (en) | 2015-12-03 | 2019-10-29 | GM Global Technology Operations LLC | Adding dry metal oxide for metal nitride particles to improve battery cycle life and power performance |
| CN109742391A (en) * | 2019-01-10 | 2019-05-10 | 上海大学(浙江·嘉兴)新兴产业研究院 | A kind of nickelic lithium ion battery, cell positive material and preparation method thereof |
| CN109742391B (en) * | 2019-01-10 | 2021-12-07 | 上海大学(浙江·嘉兴)新兴产业研究院 | High-nickel lithium ion battery, battery positive electrode material and preparation method thereof |
| CN112216814A (en) * | 2020-12-09 | 2021-01-12 | 江苏时代新能源科技有限公司 | Electrode plate, secondary battery, preparation method of secondary battery and device containing secondary battery |
| WO2022121571A1 (en) * | 2020-12-09 | 2022-06-16 | 江苏时代新能源科技有限公司 | Electrode pole piece, secondary battery and preparation method therefor, and device comprising secondary battery |
| EP4148818A4 (en) * | 2020-12-09 | 2024-02-28 | Jiangsu Contemporary Amperex Tech Ltd | Electrode pole piece, secondary battery and preparation method therefor, and device comprising secondary battery |
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