CN102637849B - Preparation method of coating cathode material of lithium ion battery - Google Patents
Preparation method of coating cathode material of lithium ion battery Download PDFInfo
- Publication number
- CN102637849B CN102637849B CN201210136132.8A CN201210136132A CN102637849B CN 102637849 B CN102637849 B CN 102637849B CN 201210136132 A CN201210136132 A CN 201210136132A CN 102637849 B CN102637849 B CN 102637849B
- Authority
- CN
- China
- Prior art keywords
- coated
- limn
- magnesium
- preparation
- magnesium salts
- 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.)
- Expired - Fee Related
Links
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
Landscapes
- Battery Electrode And Active Subsutance (AREA)
Abstract
The invention discloses a preparation method of a coating cathode material of a lithium ion battery. The preparation method comprises the following steps of: blending raw materials of MnO2 and Li2CO3; performing ball milling, mixing, drying and screening; performing calcining and insulating to obtain LiMn2O4 powder; dissolving magnesium isopropoxide and a latent solvent methylbenzene together to form a magnesium salt sol so as to obtain a magnesium salt sol coating solution; adding the LiMn2O4 powder into a coating phase ethyl ketone; controlling the weight ratio of the LiMn2O4 powder to the coating phase ethyl ketone to be 1:3; mixing by stirring, and adding the magnesium salt sol coating solution to obtain a coated product; and sintering, cooling and smashing the coated product.
Description
Technical field
The present invention relates to a kind of battery electrode material preparation method, relate in particular to a kind of lithium ion battery clad anode material preparation method.
Background technology
Battery is the power source of numerous electronic and electrical equipments.The fast development of traffic, communication and electronic information technology, deeply the popularizing in people's life such as electric automobile, mobile phone and notebook computer, has all greatly promoted the progress of battery technology, so novel battery product emerges in an endless stream.
Lithium ion battery becomes the available optimal power supply in the field such as communication and electronic information technology because it has the advantages such as capacity is high, quality is light, volume is little.But it exists the problem that high-temperature cycle life is not grown while application as electrokinetic cell, because the positive electrode of lithium ion battery is LiMn2O4, in the electrolyte of high temperature, easily there is Jahn-Teller effect in LiMn2O4, cause manganese stripping, cave in thereby there is LiMn2O4 structure, cause high-temperature cycle life to reduce.To the research of this problem, mainly concentrate on the doping of each dvielement and the coated aspect of all kinds of materials.
Summary of the invention
A kind of lithium ion battery clad anode material preparation method provided by the invention, when this material is used as anode material for lithium-ion batteries, has good high temperature storage fail safe and cyclical stability.
To achieve these goals, lithium ion battery clad anode material preparation method provided by the invention, comprises the steps:
Step 1, prepares positive electrode: with MnO
2and Li
2cO
3for raw material is to prepare burden in 1 ~ 1.5:3 ~ 4.5 by weight; Ball mill mixing, dries, and sieves; 750 DEG C ~ 800 DEG C calcinings, insulation, obtains LiMn
2o
4powder.
Step 2, prepares covering liquid: by magnesium isopropoxide and the cosolvent toluene magnesium salts colloidal sol forming that mixes, in colloidal sol, the weight concentration of magnesium salts is 10% ~ 20%, obtains magnesium salts Sol-gel Coated liquid.
Step 3, coated: by LiMn
2o
4powder joins in coated phase ethyl ketone; By LiMn
2o
4powder is controlled at 1:3 with the part by weight of coated phase ethyl ketone; Be uniformly mixed after 6 ~ 8 minutes, add above-mentioned magnesium salts Sol-gel Coated liquid, obtain coated product, wherein element magnesium and LiMn
2o
4the mol ratio of central element manganese be 0.003 ~ 0.03.
Step 4, sintering: will be coated product and carry out sintering, technological parameter is as follows: 400 ~ 600 DEG C of a sections, be incubated 8 ~ 10 hours, 800 ~ 950 DEG C of insulations of b section 3 ~ 5 hours, c section is cooling, obtains the coated LiMn of magnesium
2o
4.
Step 5, fragmentation: by the coated LiMn of cooled sintering magnesium
2o
4broken.
Preferably, in step 1, with MnO
2and Li
2cO
3weight ratio is 1:3.
Preferably, in step 2, in colloidal sol, the weight concentration of magnesium salts is 15%.
Preferably, in step 4, sintering process parameter is as follows: 500 DEG C of a sections, are incubated 9 hours; 900 DEG C of insulations of b section 4 hours; C section. cooling, obtain the coated LiMn of magnesium
2o
4.
Compared with prior art, advantage of the present invention is: adopt magnesium elements clad anode material LiMn
2o
4powder, and after the PROCESS FOR TREATMENT of optimizing, improved high temperature storage fail safe and the cyclical stability of positive electrode, extend anodal useful life.
Embodiment
embodiment mono-:
With MnO
2and Li
2cO
3for raw material is by weight preparing burden for 1:3; Ball mill mixing, dries, and sieves; 750 DEG C of calcinings, insulation, obtains LiMn
2o
4powder; By magnesium isopropoxide and the cosolvent toluene magnesium salts colloidal sol forming that mixes, in colloidal sol, the weight concentration of magnesium salts is 15%, obtains magnesium salts Sol-gel Coated liquid; By LiMn
2o
4powder joins in coated phase ethyl ketone; By LiMn
2o
4powder is controlled at 1:3 with the part by weight of coated phase ethyl ketone; Be uniformly mixed after 6 minutes, add above-mentioned magnesium salts Sol-gel Coated liquid, obtain coated product, wherein element magnesium and LiMn
2o
4the mol ratio of central element manganese be 0.005; To be coated product and carry out sintering, technological parameter is as follows: 500 DEG C of a sections, are incubated 9 hours; 900 DEG C of insulations of b section 4 hours; C section is cooling, obtains the coated LiMn of magnesium
2o
4; By the coated LiMn of cooled sintering magnesium
2o
4broken.
embodiment bis-:
With MnO
2and Li
2cO
3for raw material is by weight preparing burden for 1:4; Ball mill mixing, dries, and sieves; 800 DEG C of calcinings, insulation, obtains LiMn
2o
4powder; By magnesium isopropoxide and the cosolvent toluene magnesium salts colloidal sol forming that mixes, in colloidal sol, the weight concentration of magnesium salts is 10%, obtains magnesium salts Sol-gel Coated liquid; By LiMn
2o
4powder joins in coated phase ethyl ketone; By LiMn
2o
4powder is controlled at 1:3 with the part by weight of coated phase ethyl ketone; Be uniformly mixed after 8 minutes, add above-mentioned magnesium salts Sol-gel Coated liquid, obtain coated product, wherein element magnesium and LiMn
2o
4the mol ratio of central element manganese be 0.003 ~ 0.03; To be coated product and carry out sintering, technological parameter is as follows: 600 DEG C of a sections, are incubated 8 hours; 950 DEG C of insulations of b section 3 hours; C section is cooling, obtains the coated LiMn of magnesium
2o
4; By the coated LiMn of cooled sintering magnesium
2o
4broken.
embodiment tri-:
With MnO
2and Li
2cO
3for raw material is by weight preparing burden for 1:2; Ball mill mixing, dries, and sieves; 850 DEG C of calcinings, insulation, obtains LiMn
2o
4powder; By magnesium isopropoxide and the cosolvent toluene magnesium salts colloidal sol forming that mixes, in colloidal sol, the weight concentration of magnesium salts is 20%, obtains magnesium salts Sol-gel Coated liquid; By LiMn
2o
4powder joins in coated phase ethyl ketone; By LiMn
2o
4powder is controlled at 1:3 with the part by weight of coated phase ethyl ketone; Be uniformly mixed after 7 minutes, add above-mentioned magnesium salts Sol-gel Coated liquid, obtain coated product, wherein element magnesium and LiMn
2o
4the mol ratio of central element manganese be 0.02; To be coated product and carry out sintering, technological parameter is as follows: 400 DEG C of a sections, are incubated 10 hours; 800 DEG C of insulations of b section 5 hours; C section is cooling, obtains the coated LiMn of magnesium
2o
4; By the coated LiMn of cooled sintering magnesium
2o
4broken.
Above specific embodiments of the invention be have been described in detail, but it is just as example, the present invention is not restricted to specific embodiment described above.To those skilled in the art, any equivalent modifications that the present invention is carried out and alternative also all among category of the present invention.Therefore, equalization conversion and the amendment done without departing from the spirit and scope of the invention, all should contain within the scope of the invention.
Claims (4)
1. a lithium ion battery clad anode material preparation method, is characterized in that, step comprises:
Step 1, prepares positive electrode: with MnO
2and Li
2cO
3for raw material is to prepare burden in 1 ~ 1.5:3 ~ 4.5 by weight; Ball mill mixing, dries, and sieves; 750 DEG C ~ 800 DEG C calcinings, insulation, obtains LiMn
2o
4powder;
Step 2, prepares covering liquid: by magnesium isopropoxide and the cosolvent toluene magnesium salts colloidal sol forming that mixes, in colloidal sol, the weight concentration of magnesium salts is 10% ~ 20%, obtains magnesium salts Sol-gel Coated liquid;
Step 3, coated: by LiMn
2o
4powder joins in coated phase ethyl ketone; By LiMn
2o
4powder is controlled at 1:3 with the part by weight of coated phase ethyl ketone; Be uniformly mixed after 6-8 minute, add above-mentioned magnesium salts Sol-gel Coated liquid, obtain coated product, wherein element magnesium and LiMn
2o
4the mol ratio of central element manganese be 0.003 ~ 0.03;
Step 4, sintering: will be coated product and carry out sintering, technological parameter is as follows: 400 ~ 600 DEG C of a sections, are incubated 8 ~ 10 hours; 800 ~ 950 DEG C of insulations of b section 3 ~ 5 hours; C section is cooling, obtains the coated LiMn of magnesium
2o
4;
Step 5, fragmentation: by the coated LiMn of cooled sintering magnesium
2o
4broken.
2. preparation method as claimed in claim 1, is characterized in that, wherein, in step 1, MnO
2and Li
2cO
3weight ratio is 1:3.
3. preparation method as claimed in claim 1, is characterized in that, wherein, in step 2, in colloidal sol, the weight concentration of magnesium salts is 15%.
4. preparation method as claimed in claim 1, is characterized in that, wherein, in step 4, sintering process parameter is as follows: 500 DEG C of a sections, are incubated 9 hours; 900 DEG C of insulations of b section 4 hours; C section. cooling, obtain the coated LiMn of magnesium
2o
4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210136132.8A CN102637849B (en) | 2012-05-04 | 2012-05-04 | Preparation method of coating cathode material of lithium ion battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210136132.8A CN102637849B (en) | 2012-05-04 | 2012-05-04 | Preparation method of coating cathode material of lithium ion battery |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102637849A CN102637849A (en) | 2012-08-15 |
| CN102637849B true CN102637849B (en) | 2014-11-26 |
Family
ID=46622156
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210136132.8A Expired - Fee Related CN102637849B (en) | 2012-05-04 | 2012-05-04 | Preparation method of coating cathode material of lithium ion battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102637849B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102891288B (en) * | 2012-09-24 | 2016-08-31 | 上海锦众信息科技有限公司 | A kind of preparation method of lithium battery surface clad anode material |
| CN105355859B (en) * | 2015-12-21 | 2017-10-13 | 宁波高新区锦众信息科技有限公司 | A kind of lithium ion battery magnesium, the preparation method of barium doped lithium iron phosphate anode material |
| CN112216815B (en) * | 2019-07-11 | 2021-12-07 | 深圳市比亚迪锂电池有限公司 | Lithium manganese battery positive electrode and lithium manganese battery |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1627550A (en) * | 2003-12-11 | 2005-06-15 | 比亚迪股份有限公司 | Anode material of lithium ion cell and preparation method |
| CN1787254A (en) * | 2004-12-09 | 2006-06-14 | 比亚迪股份有限公司 | Lithium ion cell positive electrode actived material and preparation method thereof |
| CN102195035A (en) * | 2010-03-19 | 2011-09-21 | 江西省福斯特新能源有限公司 | Positive material for lithium ion battery and lithium ion battery with same |
-
2012
- 2012-05-04 CN CN201210136132.8A patent/CN102637849B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1627550A (en) * | 2003-12-11 | 2005-06-15 | 比亚迪股份有限公司 | Anode material of lithium ion cell and preparation method |
| CN1787254A (en) * | 2004-12-09 | 2006-06-14 | 比亚迪股份有限公司 | Lithium ion cell positive electrode actived material and preparation method thereof |
| CN102195035A (en) * | 2010-03-19 | 2011-09-21 | 江西省福斯特新能源有限公司 | Positive material for lithium ion battery and lithium ion battery with same |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102637849A (en) | 2012-08-15 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105185954B (en) | A kind of LiAlO2Coat LiNi1-xCoxO2Anode material for lithium-ion batteries and preparation method thereof | |
| CN103762354B (en) | A kind of LiNi0.5Mn1.5O4 material, its preparation method and lithium ion battery | |
| CN102646831A (en) | Composite xLi2MnO3.(1-x)LiMO2 material, preparation method thereof, and lithium ion battery containing material | |
| CN103078106B (en) | Method for preparing lithium manganate anode materials of lithium ion battery | |
| CN105552360A (en) | Modified lithium nickel cobalt manganese oxide cathode material and preparation method thereof | |
| CN101777644A (en) | Method for preparing carbon-encapsulated magnesium-doped lithium ion battery cathode material lithium titanate | |
| CN102412390A (en) | Preparation method of Li4Ti5O12 wrapped natural graphite for lithium ion battery cathode | |
| CN103956475A (en) | Method for preparing lithium titanate of lithium ion battery cathode material | |
| CN101800307A (en) | Method for preparing carbon-coated manganese-doped lithium titanate negative electrode material of lithium ion battery | |
| CN104393281B (en) | Preparation method of manganese, nickel and lithium cathode material | |
| CN103390748A (en) | Preparation method for cladding lithium cobaltoxide cathode material with alumina | |
| CN102496736A (en) | All-solid-state polymer electrolyte used for lithium-sulfur secondary battery and its preparation method | |
| CN105304896A (en) | Preparation method of zinc-oxide-coated lithium nickel manganese oxide positive electrode material | |
| CN102637849B (en) | Preparation method of coating cathode material of lithium ion battery | |
| CN105322150A (en) | Preparation technology of modified positive material lithium nickel manganese oxide for lithium-ion battery | |
| CN102903918A (en) | Preparation method for manganese phosphate lithium nanosheet | |
| CN102751483A (en) | Layered rich-lithium-manganese-based solid-solution anode material of lithium ion battery and method for preparing anode material | |
| CN104900881A (en) | Lead-doped modified lithium ion battery composite positive electrode material and preparation method thereof | |
| CN104766953A (en) | Preparation method of titanium dioxide/iron oxide composite anode material | |
| CN103647059A (en) | Lithium ion battery anode material with coating layer and preparation method thereof | |
| CN102280618B (en) | Anode material of lithium ion cell and preparation method thereof | |
| CN103390751A (en) | Method of preparing lithium battery vanadate positive materials by utilizing hydrothermal method | |
| CN106920933A (en) | The anode material of lithium battery and preparation method of a kind of liquid metal manganese silicate of lithium core-shell structure | |
| CN102938457A (en) | Preparation method of sodium fluoride (NAF) coated lithium-manganese-richened base-layer-shaped anode material | |
| CN106159219A (en) | A kind of Surface coating LiTi2o4lithium titanate material and preparation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141126 Termination date: 20180504 |