CN102394303A - Preparation method of lithium ion battery cathode material of lithium manganese silicate - Google Patents
Preparation method of lithium ion battery cathode material of lithium manganese silicate Download PDFInfo
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- CN102394303A CN102394303A CN2011104096809A CN201110409680A CN102394303A CN 102394303 A CN102394303 A CN 102394303A CN 2011104096809 A CN2011104096809 A CN 2011104096809A CN 201110409680 A CN201110409680 A CN 201110409680A CN 102394303 A CN102394303 A CN 102394303A
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- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 title claims abstract description 14
- 229910001416 lithium ion Inorganic materials 0.000 title claims abstract description 14
- 238000002360 preparation method Methods 0.000 title claims abstract description 14
- KLARSDUHONHPRF-UHFFFAOYSA-N [Li].[Mn] Chemical compound [Li].[Mn] KLARSDUHONHPRF-UHFFFAOYSA-N 0.000 title claims abstract description 7
- 239000010406 cathode material Substances 0.000 title abstract 2
- 239000000463 material Substances 0.000 claims abstract description 14
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 8
- 238000005245 sintering Methods 0.000 claims abstract description 8
- 239000002738 chelating agent Substances 0.000 claims abstract description 6
- 238000010438 heat treatment Methods 0.000 claims abstract description 4
- 238000004090 dissolution Methods 0.000 claims abstract description 3
- 238000001035 drying Methods 0.000 claims abstract description 3
- 239000003292 glue Substances 0.000 claims abstract description 3
- 235000012239 silicon dioxide Nutrition 0.000 claims abstract description 3
- 239000000377 silicon dioxide Substances 0.000 claims abstract description 3
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 claims description 21
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 claims description 21
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 16
- 239000011259 mixed solution Substances 0.000 claims description 15
- 239000000243 solution Substances 0.000 claims description 15
- 239000010405 anode material Substances 0.000 claims description 9
- 238000001816 cooling Methods 0.000 claims description 7
- 239000008367 deionised water Substances 0.000 claims description 7
- 229910021641 deionized water Inorganic materials 0.000 claims description 7
- 238000003756 stirring Methods 0.000 claims description 7
- 238000005303 weighing Methods 0.000 claims description 7
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims description 6
- 229910052744 lithium Inorganic materials 0.000 claims description 6
- BZDIAFGKSAYYFC-UHFFFAOYSA-N manganese;hydrate Chemical compound O.[Mn] BZDIAFGKSAYYFC-UHFFFAOYSA-N 0.000 claims description 6
- 235000011114 ammonium hydroxide Nutrition 0.000 claims description 5
- 239000012153 distilled water Substances 0.000 claims description 5
- 238000001291 vacuum drying Methods 0.000 claims description 5
- XIXADJRWDQXREU-UHFFFAOYSA-M lithium acetate Chemical class [Li+].CC([O-])=O XIXADJRWDQXREU-UHFFFAOYSA-M 0.000 claims description 4
- 239000012299 nitrogen atmosphere Substances 0.000 claims description 4
- ASTZLJPZXLHCSM-UHFFFAOYSA-N dioxido(oxo)silane;manganese(2+) Chemical compound [Mn+2].[O-][Si]([O-])=O ASTZLJPZXLHCSM-UHFFFAOYSA-N 0.000 claims description 3
- 229910002012 Aerosil® Inorganic materials 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract description 10
- 239000002994 raw material Substances 0.000 abstract description 8
- 230000015572 biosynthetic process Effects 0.000 abstract description 6
- 238000002156 mixing Methods 0.000 abstract description 4
- 239000002245 particle Substances 0.000 abstract description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract description 2
- 238000001354 calcination Methods 0.000 abstract description 2
- 229910052799 carbon Inorganic materials 0.000 abstract description 2
- 239000013078 crystal Substances 0.000 abstract description 2
- 229920002994 synthetic fiber Polymers 0.000 abstract description 2
- 229910052681 coesite Inorganic materials 0.000 abstract 1
- 229910052906 cristobalite Inorganic materials 0.000 abstract 1
- 238000000354 decomposition reaction Methods 0.000 abstract 1
- 239000010419 fine particle Substances 0.000 abstract 1
- 238000001879 gelation Methods 0.000 abstract 1
- 229910052682 stishovite Inorganic materials 0.000 abstract 1
- 229910052905 tridymite Inorganic materials 0.000 abstract 1
- 239000011572 manganese Substances 0.000 description 11
- 239000012298 atmosphere Substances 0.000 description 6
- 238000007599 discharging Methods 0.000 description 6
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 4
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 description 3
- 239000000084 colloidal system Substances 0.000 description 3
- 238000000227 grinding Methods 0.000 description 3
- 230000003647 oxidation Effects 0.000 description 3
- 238000007254 oxidation reaction Methods 0.000 description 3
- 238000010189 synthetic method Methods 0.000 description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 239000010941 cobalt Substances 0.000 description 2
- 229910017052 cobalt Inorganic materials 0.000 description 2
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 229910052759 nickel Inorganic materials 0.000 description 2
- 229920000447 polyanionic polymer Polymers 0.000 description 2
- 238000003786 synthesis reaction Methods 0.000 description 2
- 229910010707 LiFePO 4 Inorganic materials 0.000 description 1
- 229910015645 LiMn Inorganic materials 0.000 description 1
- 229910004298 SiO 2 Inorganic materials 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 238000005280 amorphization Methods 0.000 description 1
- 238000000498 ball milling Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005518 electrochemistry Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 229940071125 manganese acetate Drugs 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000033116 oxidation-reduction process Effects 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 238000010532 solid phase synthesis reaction Methods 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Images
Classifications
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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 the technical field of battery materials, and especially relates to a preparation method of a lithium ion battery cathode material of lithium manganese silicate; the invention directly adopts SiO2 as a raw material, and the preparation process comprises the following steps of pretreatment, ultrasonic dissolution, glue preparation, gelation, drying, pre-roasting, and roasting; the raw material source of the invention is easily available; a ultrasonic assistant method is adopted to allow the mixing of the raw materials to be more uniform, and to inhibit the formation of large particles; not only the product particle size distribution is uniform, and the calcining temperature is reduced, but also the carbon generated by decomposition of a chelating agent during a heat treatment sintering phase is uniformly distributed in the raw materials; excessive growth of sample crystal grains is effectively inhibited, and the synthetic material has a fine particle size; especially the method is simple, convenient, and easy to control, greatly shortens the synthetic period, and reduces cost.
Description
Technical field
The present invention relates to the battery material technical field, especially relate to a kind of preparation method of lithium-ion battery anode material lithium manganese silicate
Background technology
Lithium ion battery is with its high operating voltage, low self discharge effect and excellent cycle performance, and application communication, portable computer and electron stored energy device widely.And the arrival in 3G epoch to lithium ion battery, is especially had higher requirement to the energy density of anode material for lithium-ion batteries.Therefore, be necessary to develop new anode material for lithium-ion batteries.
In recent years, be that the positive electrode of feedstock production is to use the most at present with the oxide of the oxide of cobalt and nickel, but all had problem to be solved at aspects such as safety, material source, preparation processes by cobalt and the prepared material of nickel; And for other positive electrodes, also all having needs improved aspect separately, for example: LiMn
2O
4Cheap, security performance is good, but its theoretical capacity is not high, and cycle performance and thermal stability are relatively poor; LiFePO
4Though have good thermal stability and cycle performance, and higher specific energy and fail safe, lower electronic conductivity and lithium ion diffusion rate become its big obstacle that continues Application Research.For this reason, Nyt é n etc. has proposed polyanion type silicate anodal material first, and manganese silicate of lithium (Li wherein
2MnSiO
4) with the height ratio capacity of its 333mAh/g, be considered to optimal anode material for lithium-ion batteries.
At Li
2MnSiO
4In, Mn is positive divalence, there be the oxidation valence state higher than iron in it.Work as Li
2MnSiO
4After sloughing the lithium of 1mol, generate LiMnSiO
4The Mn of this moment is positive trivalent, when continuing to deviate from lithium, MnSiO is just arranged
4Generation.Be Li
2MnSiO
4There are 2 oxidation-reduction pair Mn
3+/ Mn
2+And Mn
4+/ Mn
3+The theoretical research of A.Kokalj etc. shows, Li
2MnSiO
4Material is different from Li
2FeSiO
4Material, it is unstable and have strong amorphization trend to take off material structure after the lithium attitude.Therefore, reinforcement is to the silicate anodal material Li of polyanion type
2MnSiO
4The research of synthetic method is prepared the stable silicate anodal material of electrochemical properties the development of lithium ion battery is had great significance.
Li
2MnSiO
4Research start late Mn in addition
2+Be prone to oxidation in the air, generate the oxide cover layer of brown, also be prone to oxidation when heating up, Li
2MnSiO
4Synthesis condition harsh, to its synthetic and research comparatively speaking seldom.At present, synthetic method commonly used has high temperature solid phase synthesis, Pechini sol-gal process of revising and liquid-phase reflux synthetic method.The method that employing high temperature solid-state such as Wengang Liu and mechanical ball milling combine has been synthesized Li under 800 ℃
2MnSiO
4Positive electrode, this method energy loss is excessive, and the electrochemistry cycle performance of material is unsatisfactory, through 10 circulation back Li
2MnSiO
4Capacity be merely 3.2mAh/g.
Summary of the invention
In order to address the above problem, one of the object of the invention is, a kind of preparation method of lithium-ion battery anode material lithium manganese silicate is provided; This method not only makes the Li that obtains
2MnSiO
4Novel anode material, chemical property is good, has higher first discharge specific capacity and cyclical stability preferably; And this method used silicon resource abundant in the earth's crust, and wide material sources, energy consumption are little, and this method itself can not cause any pollution to environment yet.
To achieve these goals, technical scheme of the present invention is following:
A kind of preparation method of lithium-ion battery anode material lithium manganese silicate comprises being prepared as follows step:
A, preliminary treatment: a certain amount of aerosil is dissolved in the deionized water, and under the power of 180-200W, behind the ultrasonic 50-70min, it is subsequent use that configuration obtains mixed solution I;
B, ultrasonic dissolution: the two water lithium acetate (CH that take by weighing stoichiometric proportion
3COOLi2H
2O (99%)) and four water manganese acetate (Mn (CH
3COO)
24H
2O (99%)), and be dissolved in the distilled water of 100ml, the mixed solution I in the steps A is slowly joined in the above-mentioned solution, ultrasonic 25-30min under the power of 80-100W, configuration obtains mixed solution I I;
C, join glue: take by weighing citric acid and ethylene glycol according to 1: 2 ratio of mol ratio earlier, be dissolved in the deionized water and be mixed with chelating agent; Chelating agent slowly is added drop-wise among the step B gained mixed solution I I again, and constantly stirs, make it to mix, utilize ammoniacal liquor regulator solution pH value to be 5-7, configuration obtains mixed solution I II;
D, gel: II places 80 ℃ of water-baths with step C gained mixed solution I, and constantly stirring obtains gel;
E, drying: step D gained gel is placed 120 ℃ of dry 12h of vacuum drying chamber, obtain xerogel, and fully grind;
F, pre-burning: step e gained xerogel is placed 350 ℃ of tube furnace sintering 4h that are full of nitrogen atmosphere, and to remove unnecessary ammonia and steam, fully grind the cooling back; Obtain the pre-burning product.
G, roasting: with step F gained pre-burning product in being full of the tube furnace of nitrogen atmosphere, in 600-800 ℃ of roasting 10-13h, the cooling grind said manganese silicate of lithium material.
Preferably, among the step B, in the last gained solution, the mol ratio of its two water lithium acetate, four water manganese acetates, silicon dioxide is 2: 1: 1.
Preferably, among the step C, the mol ratio of four water manganese acetates, citric acid and ethylene glycol is 1: 1: 2.
The present invention directly adopts SiO
2Make raw material, its preparation technology: preliminary treatment-ultrasonic dissolution-join glue-gel-drying-pre-burning-roasting, raw material sources of the present invention are simple and easy to; Adopt ultrasonic auxiliary method simultaneously, make more homogeneous of raw materials mix, suppress oarse-grained formation; Not only make product cut size be evenly distributed, reduce calcining heat; And chelating agent decompose to generate carbon in the heat treatment sintering stage and is dispersed in uniformly in the raw material, can effectively suppress too growing up of sample crystal grain, makes the synthetic material particle diameter tiny; Especially method simple and convenient, be easy to control, greatly shortened synthesis cycle, reduced cost.
Description of drawings
Fig. 1 is the X ray diffracting spectrum of the embodiment of the invention 1 product;
Fig. 2 is the first charge-discharge curve of the embodiment of the invention 1 product, and wherein: charging and discharging currents density is 10mA/g, and charging/discharging voltage is 1.5-4.8V;
Fig. 3 is the stereoscan photograph of the embodiment of the invention 2 products;
Fig. 4 is the cycle performance curve of the embodiment of the invention 2 products, and wherein, charging and discharging currents density is 20mA/g, and charging/discharging voltage is 1.5-4.8V;
Fig. 5 is the cycle performance curve of the embodiment of the invention 3 products, and wherein: charging and discharging currents density is 30mA/g, and charging/discharging voltage is 1.5-4.8V.
Embodiment
Embodiment 1
SiO with 0.02mol
2Aeroge is dissolved in the 100ml deionized water, and under the power of 180W, subsequent use after ultrasonic 50 minutes.Take by weighing the CH of 0.04mol simultaneously
3COOLi2H
2Mn (the CH of O (99%) and 0.02mol
3COO)
24H
2O (99%) is dissolved in the distilled water of 100ml.At room temperature, the SiO after ultrasonic
2The dissolving slowly be added drop-wise in the above-mentioned solution, and under the power of 80W ultrasonic 25min.Afterwards, under continuous stirring condition, the 100ml solution of being prepared by 0.02mol citric acid and 0.04mol ethylene glycol slowly joins in the above-mentioned 200ml mixed solution.After mixing, utilize ammoniacal liquor to regulate pH=5, and gained solution is placed 80 ℃ of water-baths, and constantly be stirred to colloid formation.The gained gel is placed 120 ℃ of dry 12min of vacuum drying chamber, obtain xerogel, treat that abundant grinding is placed on 350 ℃ and is full of N
2Sintering 4h in the tube furnace of atmosphere obtains the pre-burning product.Gained pre-burning product is fully ground and is being full of N
2In the tube furnace of atmosphere, in 700 ℃ of roasting 10h, Li gets product after cooling is ground
2MnSiO
4Positive electrode.
Embodiment 2:
SiO with 0.01mol
2Aeroge is dissolved in the 100ml deionized water, and under the power of 190W, subsequent use after ultrasonic 60 minutes.Take by weighing the CH of 0.02mol simultaneously
3COOLi2H
2Mn (the CH of O (99%) and 0.01mol
3COO)
24H
2O (99%) is dissolved in the distilled water of 100ml.At room temperature, the SiO after ultrasonic
2The dissolving slowly be added drop-wise in the above-mentioned solution, and under the power of 90W ultrasonic 25min.Afterwards, under continuous stirring condition, the 100ml solution of being prepared by 0.01mol citric acid and 0.02mol ethylene glycol slowly joins in the above-mentioned 200ml mixed solution.After mixing, utilize ammoniacal liquor to regulate pH=6, and gained solution is placed 80 ℃ of water-baths, and constantly be stirred to colloid formation.The gained gel is placed 120 ℃ of dry 12h of vacuum drying chamber, obtain xerogel, treat that abundant grinding is placed on 350 ℃ and is full of N
2Sintering 4h in the tube furnace of atmosphere obtains the pre-burning product.Gained pre-burning product is fully ground and is being full of N
2In the tube furnace of atmosphere, in 700 ℃ of roastings 10 hours, Li got product after cooling is ground
2MnSiO
4Positive electrode.
Embodiment 3:
SiO with 0.015mol
2Aeroge is dissolved in the 100ml deionized water, and under the power of 200W, subsequent use behind the ultrasonic 70min.Take by weighing the CH of 0.03mol simultaneously
3COOLi2H
2Mn (the CH of O (99%) and 0.015mol
3COO)
24H
2O (99%) is dissolved in the distilled water of 100ml.At room temperature, the SiO after ultrasonic
2The dissolving slowly be added drop-wise in the above-mentioned solution, and under the power of 90W ultrasonic 30min.Afterwards, under continuous stirring condition, the 100ml solution of being prepared by 0.015mol citric acid and 0.03mol ethylene glycol slowly joins in the above-mentioned 200ml mixed solution.After mixing, utilize ammoniacal liquor to regulate pH=7, and gained solution is placed 80 ℃ of water-baths, and constantly be stirred to colloid formation.The gained gel is placed 120 ℃ of dry 12h of vacuum drying chamber, obtain xerogel, treat that abundant grinding is placed on 350 ℃ and is full of N
2Sintering 4h in the tube furnace of atmosphere obtains the pre-burning product.Gained pre-burning product is fully ground and is being full of N
2In the tube furnace of atmosphere, in 700 ℃ of roastings 10 hours, Li got product after cooling is ground
2MnSiO
4Positive electrode.
The above has been merely is the several specific embodiments that it will be apparent to those skilled in the art that the present invention is cited, is not to be used for limiting the present invention's scope required for protection.So all equivalences of being done with the described characteristic of claim of the present invention, structure and principle change or modify, and all should be included within the claim scope of the present invention.
Claims (4)
1. the preparation method of a lithium-ion battery anode material lithium manganese silicate is characterized in that, comprises being prepared as follows step:
A, preliminary treatment: a certain amount of aerosil is dissolved in the deionized water, and under the power of 180-200W, behind the ultrasonic 50-70min, it is subsequent use that configuration obtains mixed solution I;
B, ultrasonic dissolution: the two water lithium acetates and the four water manganese acetates that take by weighing stoichiometric proportion; And be dissolved in the distilled water of 100ml; Mixed solution I in the steps A is slowly joined in the above-mentioned solution, ultrasonic 25-30min under the power of 80-100W, configuration obtains mixed solution I I;
C, join glue: take by weighing citric acid and ethylene glycol according to 1: 2 ratio of mol ratio earlier, be dissolved in the deionized water and be mixed with chelating agent; Chelating agent slowly is added drop-wise among the step B gained mixed solution I I again, and constantly stirs, make it to mix, utilize ammoniacal liquor regulator solution pH value to be 5-7, configuration obtains mixed solution I II;
D, gel: II places 70-90 ℃ of water-bath with step C gained mixed solution I, and constantly stirring obtains gel;
E, drying: step D gained gel was placed the 110-120 ℃ of dry 10-13 of vacuum drying chamber hour, obtain xerogel, and fully grind;
F, pre-burning: step e gained xerogel was placed 300-400 ℃ of tube furnace sintering that is full of nitrogen atmosphere 3-5 hour, and fully grind the cooling back; Obtain the pre-burning product.
G, roasting: with step F gained pre-burning product in being full of the tube furnace of nitrogen atmosphere, in 600-800 ℃ of roasting 10-13h, the cooling grind said manganese silicate of lithium material.
2. according to the said preparation method of claim 1, it is characterized in that among the step B, in the last gained solution, the mol ratio of its two water lithium acetate, four water manganese acetates, silicon dioxide is 2: 1: 1.
3. according to the said preparation method of claim 1, it is characterized in that among the step C, the mol ratio of four water manganese acetates, citric acid and ethylene glycol is 1: 1: 2.
4. according to the said preparation method of claim 1, it is characterized in that in its step e and the step F, its sintering heating rate is 2 ℃/min.
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|---|---|---|---|
| CN2011104096809A CN102394303B (en) | 2011-12-09 | 2011-12-09 | Preparation method of lithium ion battery cathode material of lithium manganese silicate |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011104096809A CN102394303B (en) | 2011-12-09 | 2011-12-09 | Preparation method of lithium ion battery cathode material of lithium manganese silicate |
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| CN102394303B CN102394303B (en) | 2013-03-27 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103050692A (en) * | 2012-12-21 | 2013-04-17 | 中国科学院福建物质结构研究所 | Preparation method of grapheme-lithium manganese silicate anode material |
| CN105576205A (en) * | 2015-12-21 | 2016-05-11 | 宁波高新区锦众信息科技有限公司 | Method for preparing carbon-coated silicic acid, manganese and lithium composite materials for lithium ion batteries |
| CN106531978A (en) * | 2015-09-25 | 2017-03-22 | 上海杉杉科技有限公司 | Lithium ion battery cathode material and preparation method thereof |
| CN107732233A (en) * | 2017-10-18 | 2018-02-23 | 济南大学 | A kind of microwave preparation of in-situ carbon cladding lithium manganese silicate anode material |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101540392A (en) * | 2009-04-09 | 2009-09-23 | 西安建筑科技大学 | Method for preparing lithium-manganese silicate of cathode material of lithium-ion battery |
| CN101847711A (en) * | 2010-06-17 | 2010-09-29 | 天津大学 | Porous carbon coated ferrous silicate lithium anode material and preparation method thereof |
-
2011
- 2011-12-09 CN CN2011104096809A patent/CN102394303B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101540392A (en) * | 2009-04-09 | 2009-09-23 | 西安建筑科技大学 | Method for preparing lithium-manganese silicate of cathode material of lithium-ion battery |
| CN101847711A (en) * | 2010-06-17 | 2010-09-29 | 天津大学 | Porous carbon coated ferrous silicate lithium anode material and preparation method thereof |
Non-Patent Citations (1)
| Title |
|---|
| R.DOMINKO ET AL: "Structure and electrochemical performance of Li2MnSiO4 and Li2FeSiO4 as potential Li-battery cathode materials", 《ELECTROCHEMISTRY COMMUNICATIONS》 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103050692A (en) * | 2012-12-21 | 2013-04-17 | 中国科学院福建物质结构研究所 | Preparation method of grapheme-lithium manganese silicate anode material |
| CN106531978A (en) * | 2015-09-25 | 2017-03-22 | 上海杉杉科技有限公司 | Lithium ion battery cathode material and preparation method thereof |
| CN105576205A (en) * | 2015-12-21 | 2016-05-11 | 宁波高新区锦众信息科技有限公司 | Method for preparing carbon-coated silicic acid, manganese and lithium composite materials for lithium ion batteries |
| CN107732233A (en) * | 2017-10-18 | 2018-02-23 | 济南大学 | A kind of microwave preparation of in-situ carbon cladding lithium manganese silicate anode material |
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| Publication number | Publication date |
|---|---|
| CN102394303B (en) | 2013-03-27 |
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