CN103887482A - Preparation method of graphene-lithium silicate composite anode material - Google Patents
Preparation method of graphene-lithium silicate composite anode material Download PDFInfo
- Publication number
- CN103887482A CN103887482A CN201410138387.7A CN201410138387A CN103887482A CN 103887482 A CN103887482 A CN 103887482A CN 201410138387 A CN201410138387 A CN 201410138387A CN 103887482 A CN103887482 A CN 103887482A
- Authority
- CN
- China
- Prior art keywords
- graphene oxide
- graphene
- mixture
- sulphur
- lithium silicate
- 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.)
- Granted
Links
- 229910052912 lithium silicate Inorganic materials 0.000 title claims abstract description 22
- 239000002131 composite material Substances 0.000 title claims abstract description 12
- 238000002360 preparation method Methods 0.000 title claims abstract description 8
- 239000010405 anode material Substances 0.000 title abstract 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 29
- 239000000463 material Substances 0.000 claims abstract description 26
- 229910021389 graphene Inorganic materials 0.000 claims abstract description 23
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims abstract description 22
- 239000000203 mixture Substances 0.000 claims abstract description 20
- 238000006243 chemical reaction Methods 0.000 claims abstract description 14
- PAZHGORSDKKUPI-UHFFFAOYSA-N lithium metasilicate Chemical compound [Li+].[Li+].[O-][Si]([O-])=O PAZHGORSDKKUPI-UHFFFAOYSA-N 0.000 claims abstract description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 11
- 238000003756 stirring Methods 0.000 claims abstract description 10
- 238000000498 ball milling Methods 0.000 claims abstract description 6
- 238000000034 method Methods 0.000 claims abstract description 6
- 238000001816 cooling Methods 0.000 claims abstract description 5
- 239000008367 deionised water Substances 0.000 claims abstract description 5
- 229910021641 deionized water Inorganic materials 0.000 claims abstract description 5
- QAOWNCQODCNURD-UHFFFAOYSA-N sulfuric acid Substances OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims abstract description 5
- 238000001132 ultrasonic dispersion Methods 0.000 claims abstract description 5
- 238000005406 washing Methods 0.000 claims abstract description 5
- 239000005864 Sulphur Substances 0.000 claims description 19
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 8
- LIVNPJMFVYWSIS-UHFFFAOYSA-N silicon monoxide Chemical compound [Si-]#[O+] LIVNPJMFVYWSIS-UHFFFAOYSA-N 0.000 claims description 8
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 claims description 4
- PLMFYJJFUUUCRZ-UHFFFAOYSA-M decyltrimethylammonium bromide Chemical compound [Br-].CCCCCCCCCC[N+](C)(C)C PLMFYJJFUUUCRZ-UHFFFAOYSA-M 0.000 claims description 4
- YNQRWVCLAIUHHI-UHFFFAOYSA-L dilithium;oxalate Chemical compound [Li+].[Li+].[O-]C(=O)C([O-])=O YNQRWVCLAIUHHI-UHFFFAOYSA-L 0.000 claims description 4
- 230000000694 effects Effects 0.000 claims description 4
- 238000010438 heat treatment Methods 0.000 claims description 4
- 239000001307 helium Substances 0.000 claims description 4
- 229910052734 helium Inorganic materials 0.000 claims description 4
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 claims description 4
- 229910052708 sodium Inorganic materials 0.000 claims description 4
- 239000011734 sodium Substances 0.000 claims description 4
- 239000004094 surface-active agent Substances 0.000 claims description 4
- 238000010792 warming Methods 0.000 claims description 4
- 238000002156 mixing Methods 0.000 abstract description 3
- ZVLDJSZFKQJMKD-UHFFFAOYSA-N [Li].[Si] Chemical compound [Li].[Si] ZVLDJSZFKQJMKD-UHFFFAOYSA-N 0.000 abstract description 2
- 239000011593 sulfur Substances 0.000 abstract 3
- 229910052717 sulfur Inorganic materials 0.000 abstract 3
- XJWSAJYUBXQQDR-UHFFFAOYSA-M dodecyltrimethylammonium bromide Chemical compound [Br-].CCCCCCCCCCCC[N+](C)(C)C XJWSAJYUBXQQDR-UHFFFAOYSA-M 0.000 abstract 2
- 238000013329 compounding Methods 0.000 abstract 1
- 238000001035 drying Methods 0.000 abstract 1
- 229910052979 sodium sulfide Inorganic materials 0.000 abstract 1
- GRVFOGOEDUUMBP-UHFFFAOYSA-N sodium sulfide (anhydrous) Chemical compound [Na+].[Na+].[S-2] GRVFOGOEDUUMBP-UHFFFAOYSA-N 0.000 abstract 1
- 239000000126 substance Substances 0.000 abstract 1
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 8
- 229910001416 lithium ion Inorganic materials 0.000 description 8
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 4
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 4
- 229910052710 silicon Inorganic materials 0.000 description 4
- 239000010703 silicon Substances 0.000 description 4
- 239000000956 alloy Substances 0.000 description 3
- 229910052799 carbon Inorganic materials 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 3
- 239000007772 electrode material Substances 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- 229910052744 lithium Inorganic materials 0.000 description 3
- 239000011863 silicon-based powder Substances 0.000 description 3
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 239000011149 active material Substances 0.000 description 2
- 229910052786 argon Inorganic materials 0.000 description 2
- 238000006253 efflorescence Methods 0.000 description 2
- 239000003792 electrolyte Substances 0.000 description 2
- 206010037844 rash Diseases 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 229910005001 Li12Si7 Inorganic materials 0.000 description 1
- 229910001290 LiPF6 Inorganic materials 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 238000005253 cladding Methods 0.000 description 1
- 239000006258 conductive agent Substances 0.000 description 1
- 230000001351 cycling effect Effects 0.000 description 1
- 239000010408 film Substances 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000005543 nano-size silicon particle Substances 0.000 description 1
- 150000004767 nitrides Chemical class 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 229920002981 polyvinylidene fluoride Polymers 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 230000001172 regenerating effect Effects 0.000 description 1
- 239000000523 sample Substances 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
- 239000011366 tin-based material Substances 0.000 description 1
Classifications
-
- 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
-
- 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
- H01M4/58—Selection of substances as active materials, active masses, active liquids of inorganic compounds other than oxides or hydroxides, e.g. sulfides, selenides, tellurides, halogenides or LiCoFy; of polyanionic structures, e.g. phosphates, silicates or borates
- H01M4/5825—Oxygenated metallic salts or polyanionic structures, e.g. borates, phosphates, silicates, olivines
-
- 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
- H01M4/624—Electric conductive fillers
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/052—Li-accumulators
- H01M10/0525—Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
-
- 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
- H01M2004/026—Electrodes composed of, or comprising, active material characterised by the polarity
- H01M2004/027—Negative electrodes
-
- 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
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Composite Materials (AREA)
- Crystallography & Structural Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Battery Electrode And Active Subsutance (AREA)
Abstract
The invention relates to a preparation method of a graphene-lithium silicate composite anode material. The method comprises the following steps of (1) preparing lithium silicate; (2) adding sodium sulfide into deionized water, completely dissolving substances through ultrasonic dispersion, adding surface active dodecyltrimethylammonium bromide into ionized water, stirring at room temperature to enable surface active dodecyltrimethylammonium bromide to be completely dissolved, and mixing the two solutions in a reaction vessel; keeping the reaction vessel at constant temperature in water bath, slowly and dropwise adding a proper amount of concentrated sulfuric acid, continuing to keep constant temperature, adding a graphene oxide solution while fiercely stirring, and cooling; centrifuging the mixture, washing and drying to obtain sulfur/graphene oxide; (3) mixing lithium silicate and sulfur/graphene oxide to obtain a mixture, and carrying out mechanical ball milling on the mixture to obtain the graphene-lithium silicate composite anode material. The graphene-lithium silicate composite anode material prepared by using the preparation method is prepared by compounding a silicon-lithium material with high-energy density and a sulfur/graphene oxide material with high conductivity and circulatory stability so as to have the characteristics of high energy density and high stability.
Description
Affiliated technical field
The present invention relates to a kind of preparation method of Graphene-lithium metasilicate composite negative pole material.
Background technology
In numerous regenerative resources, to have specific energy large because of it for lithium ion battery, has extended cycle life, and security performance is good, nuisanceless etc., and advantage becomes a kind of desirable selection.Electrode material is the key factor that determines performance of lithium ion battery, and business-like carbon negative pole material has approached its theoretical capacity (372mAhg-1) in the market, thereby has limited further developing of lithium ion battery.Therefore, find a kind of good cycling stability, lithium ion battery negative material that energy density is high, significant for the use field of widening lithium ion battery.
Researcher is devoted to find a kind of non-carbon negative pole material of alternative material with carbon element always in recent years, and main research comprises nitride, silica-base material, tin-based material and other alloy materials etc.It is large that alloy material of cathode has specific capacity, and embedding lithium current potential is high, and electrolyte sensitiveness is low, the advantages such as good conductivity, but alloy material of cathode volumetric expansion in charge and discharge process causes active material efflorescence, electrically contacts forfeiture, and battery performance worsens.Silicon, as negative material, can form Li12Si7, Li with lithium
13si
4, Li
7si
13and Li
22si
4up to 4200mAh/g, thereby become the focus of people's research Deng, theoretical capacity.But due to close-packed structure, silicon volumetric expansion in charge and discharge process is large, material efflorescence is serious, and nano-silicon and thin film silicon cost of manufacture are high in addition, and these are all restricting its application in lithium ion battery.
Summary of the invention
The invention provides a kind of preparation method of Graphene-lithium metasilicate composite negative pole material, the negative material that uses the method to prepare, has higher specific capacity and cyclical stability.
To achieve these goals, the preparation method of a kind of Graphene-lithium metasilicate composite negative pole material provided by the invention, the method comprises the steps:
(1) prepare lithium metasilicate
Nanometer silicon monoxide, lithium oxalate are mixed and ground for the ratio of 2-3:1 in mass ratio and evenly obtain mixture, mixture is placed in to reactor, in reactor, pass into helium, and react 10-20h after being warming up to 500-750 DEG C with the heating rate of 3-5 DEG C/min, obtain lithium metasilicate, cooling for subsequent use;
(2) prepare sulphur/graphene oxide
Vulcanized sodium is joined in deionized water, by ultrasonic dispersion, material is dissolved completely, surface activity DTAB is added in ionized water, under room temperature, stir and make it to dissolve completely, wherein the weight ratio of surfactant and sulphur is 0.05-0.1:1, and above-mentioned two solution are being mixed in reaction vessel;
By above-mentioned reaction vessel constant temperature 30-60min in 50-60 DEG C of water-bath, slowly drip the appropriate concentrated sulfuric acid, continue constant temperature 2-5h, under vigorous stirring, add the graphene oxide solution of 0.15g/ml, wherein the weight ratio of graphene oxide and sulphur is 3-5:1, continues to be cooled to room temperature after reaction 1-2h;
Said mixture is obtained to sulphur/graphene oxide through the washing of centrifugal, ethanol, after dry at 60～80 DEG C of temperature;
(3) ratio that is 10:2-3 by above-mentioned lithium metasilicate with sulphur/graphene oxide mass ratio is mixed, and gained mixture is mechanical ball milling 12-24h under 400-500r/min rotating speed, obtains product.
Graphene-lithium metasilicate composite negative pole material prepared by the present invention, the silicon lithium material and sulphur/graphene oxide Material cladding with high conductivity and cyclical stability of high-energy-density will be there is, make material have the feature of high-energy-density and high stability concurrently, while making this composite negative pole material for lithium ion battery, have compared with height ratio capacity and longer useful life.
Embodiment
Embodiment mono-
Nanometer silicon monoxide, lithium oxalate are mixed and ground for the ratio of 2:1 in mass ratio and evenly obtain mixture, mixture is placed in to reactor, in reactor, passes into helium, and react 20h after being warming up to 500 DEG C with the heating rate of 3 DEG C/min, obtain lithium metasilicate, cooling for subsequent use.
Vulcanized sodium is joined in deionized water, by ultrasonic dispersion, material is dissolved completely, surface activity DTAB is added in ionized water, under room temperature, stir and make it to dissolve completely, wherein the weight ratio of surfactant and sulphur is 0.05:1, and above-mentioned two solution are being mixed in reaction vessel.
By above-mentioned reaction vessel constant temperature 60min in 50 DEG C of water-baths, slowly drip the appropriate concentrated sulfuric acid, continue constant temperature 2h, under vigorous stirring, add the graphene oxide solution of 0.15g/ml, wherein the weight ratio of graphene oxide and sulphur is 3:1, continues to be cooled to room temperature after reaction 1h; Said mixture is obtained to sulphur/graphene oxide through the washing of centrifugal, ethanol, after dry at 60 DEG C of temperature.
The ratio that is 10:2 with sulphur/graphene oxide mass ratio by above-mentioned lithium metasilicate is mixed, and gained mixture is mechanical ball milling 24h under 400r/min rotating speed, obtains product.
Embodiment bis-
Nanometer silicon monoxide, lithium oxalate are mixed and ground for the ratio of 3:1 in mass ratio and evenly obtain mixture, mixture is placed in to reactor, in reactor, passes into helium, and react 10h after being warming up to 750 DEG C with the heating rate of 5 DEG C/min, obtain lithium metasilicate, cooling for subsequent use.
Vulcanized sodium is joined in deionized water, by ultrasonic dispersion, material is dissolved completely, surface activity DTAB is added in ionized water, under room temperature, stir and make it to dissolve completely, wherein the weight ratio of surfactant and sulphur is 0.1:1, and above-mentioned two solution are being mixed in reaction vessel.
By above-mentioned reaction vessel constant temperature 30min in 60 DEG C of water-baths, slowly drip the appropriate concentrated sulfuric acid, continue constant temperature 5h, under vigorous stirring, add the graphene oxide solution of 0.15g/ml, wherein the weight ratio of graphene oxide and sulphur is 5:1, continues to be cooled to room temperature after reaction 2h; Said mixture is obtained to sulphur/graphene oxide through the washing of centrifugal, ethanol, after dry at 80 DEG C of temperature.
The ratio that is 10:3 with sulphur/graphene oxide mass ratio by above-mentioned lithium metasilicate is mixed, and gained mixture is mechanical ball milling 12h under 500r/min rotating speed, obtains product.
Comparative example
Taking Si powder as major ingredient; taking graphite powder as auxiliary material; the granularity of Si powder and graphite powder is all less than 20 μ m; be to put into steel ball grinder after mixing at 95: 5 in mass ratio by Si powder and graphite powder; steel ball grinder is vacuumized and is filled with after in triplicate by argon replaces again argon gas as protection gas; the ball grinder that is filled with protection gas is placed in to planetary ball mill; ball radius is 15-5mm; be 500 revs/min of lower ball millings 80 hours at rotating speed, make granularity and be less than 20 μ m lithium ion battery negative silicon based composite materials.
Above-described embodiment one, two and comparative example products therefrom, respectively as active electrode material, are assembled into 2032 type button cells and carry out loop test.The composition and ratio of electrode material is: active material: conductive agent: PVdF=8:1:1(mass ratio); Be lithium metal to electrode; Electrolyte is EC/DMC (volume ratio the is 1:1) solution of 1mol/L LiPF6; Barrier film is Cellgard2400 micro-pore septum.Be at 25 DEG C, to carry out electric performance test at probe temperature, compared with the product of this embodiment mono-and two material and comparative example, the capacity that charges and discharge first improves 20-25%, brings up to useful life more than 2 times after tested.
Claims (1)
1. a preparation method for Graphene-lithium metasilicate composite negative pole material, the method comprises the steps:
(1) prepare lithium metasilicate
Nanometer silicon monoxide, lithium oxalate are mixed and ground for the ratio of 2-3:1 in mass ratio and evenly obtain mixture, mixture is placed in to reactor, in reactor, pass into helium, and react 10-20h after being warming up to 500-750 DEG C with the heating rate of 3-5 DEG C/min, obtain lithium metasilicate, cooling for subsequent use;
(2) prepare sulphur/graphene oxide
Vulcanized sodium is joined in deionized water, by ultrasonic dispersion, material is dissolved completely, surface activity DTAB is added in ionized water, under room temperature, stir and make it to dissolve completely, wherein the weight ratio of surfactant and sulphur is 0.05-0.1:1, and above-mentioned two solution are being mixed in reaction vessel;
By above-mentioned reaction vessel constant temperature 30-60min in 50-60 DEG C of water-bath, slowly drip the appropriate concentrated sulfuric acid, continue constant temperature 2-5h, under vigorous stirring, add the graphene oxide solution of 0.15g/ml, wherein the weight ratio of graphene oxide and sulphur is 3-5:1, continues to be cooled to room temperature after reaction 1-2h;
Said mixture is obtained to sulphur/graphene oxide through the washing of centrifugal, ethanol, after dry at 60～80 DEG C of temperature;
(3) ratio that is 10:2-3 by above-mentioned lithium metasilicate with sulphur/graphene oxide mass ratio is mixed, and gained mixture is mechanical ball milling 12-24h under 400-500r/min rotating speed, obtains product.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410138387.7A CN103887482B (en) | 2014-04-08 | 2014-04-08 | The preparation method of a kind of sulphur/graphene oxide-lithium metasilicate composite negative pole material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410138387.7A CN103887482B (en) | 2014-04-08 | 2014-04-08 | The preparation method of a kind of sulphur/graphene oxide-lithium metasilicate composite negative pole material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103887482A true CN103887482A (en) | 2014-06-25 |
| CN103887482B CN103887482B (en) | 2016-05-04 |
Family
ID=50956284
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410138387.7A Active CN103887482B (en) | 2014-04-08 | 2014-04-08 | The preparation method of a kind of sulphur/graphene oxide-lithium metasilicate composite negative pole material |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103887482B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101913616A (en) * | 2010-08-13 | 2010-12-15 | 北京科技大学 | Preparation method of lithium silicate material with high purity |
| JP2011113862A (en) * | 2009-11-27 | 2011-06-09 | Hitachi Maxell Ltd | Nonaqueous secondary battery and method of manufacturing the same |
| CN102709533A (en) * | 2012-06-12 | 2012-10-03 | 广州市香港科大霍英东研究院 | Preparation method of lithium sulphur battery anode material with high power and high specific capacity |
| CN103258992A (en) * | 2013-04-28 | 2013-08-21 | 浙江大学 | Preparation method for lithium-ion battery cathode material with high initial coulomb efficiency |
-
2014
- 2014-04-08 CN CN201410138387.7A patent/CN103887482B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011113862A (en) * | 2009-11-27 | 2011-06-09 | Hitachi Maxell Ltd | Nonaqueous secondary battery and method of manufacturing the same |
| CN101913616A (en) * | 2010-08-13 | 2010-12-15 | 北京科技大学 | Preparation method of lithium silicate material with high purity |
| CN102709533A (en) * | 2012-06-12 | 2012-10-03 | 广州市香港科大霍英东研究院 | Preparation method of lithium sulphur battery anode material with high power and high specific capacity |
| CN103258992A (en) * | 2013-04-28 | 2013-08-21 | 浙江大学 | Preparation method for lithium-ion battery cathode material with high initial coulomb efficiency |
Non-Patent Citations (1)
| Title |
|---|
| CHIL-HOON DOH ET AL: ""Analysis on the Formation of Li4SiO4 and Li2SiO3 through First"", 《JOURNAL OF ELECTROCHEMICAL SCIENCE AND TECHNOLOGY》 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103887482B (en) | 2016-05-04 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| WO2019114205A1 (en) | Mxene-metal composite material and preparation method therefor | |
| CN103346324B (en) | Lithium ion battery cathode material and its preparation method | |
| CN101719545B (en) | Anode composite material of lithium sulfur battery and preparation method thereof | |
| CN104201366B (en) | A kind of preparation method of high security high compacted density nickle cobalt lithium manganate NCM523 ternary material | |
| CN104600247B (en) | Sulfur-carbon composite positive electrode material for lithium-sulfur battery and preparation method of sulfur-carbon composite positive electrode material | |
| CN103151504B (en) | A kind of preparation method of Ag doping carbon-silicon composite cathode material | |
| CN103606642B (en) | A kind of preparation method of conjugation organic frame compound/sulphur composite material and application | |
| CN102664256A (en) | Anode lead plaster of power lead-acid storage battery polar plate | |
| CN101950804A (en) | Method for preparing spherical SnS2 anode material of lithium ion battery | |
| CN104538585B (en) | Hollow porous micron order silicon ball, silicon based anode material and preparation method of lithium ion battery | |
| CN106654263A (en) | Preparation method of Prussian blue based sodium ion battery positive electrode material | |
| CN102496705A (en) | Preparation method of spinel lithium titanate | |
| CN105355849A (en) | Lithium battery cathode additive, lithium ion battery, preparation method and uses thereof | |
| CN102280617A (en) | Carbon material modified composite lithium manganese oxide cathode material applied to lithium ion battery and preparation method thereof | |
| CN104966814A (en) | High-security metallic lithium cathode and preparation method thereof | |
| CN103762348B (en) | SnSbCu/MCMB/C core-shell structure serving as anode material of lithium ion battery and preparation method thereof | |
| CN113675380A (en) | Formula and preparation method of deep-circulation type lead-acid storage battery positive lead paste | |
| CN104466139A (en) | Preparation method of polyaniline-clad germanium-doped lithium manganate composite cathode material | |
| CN106953094A (en) | A kind of high circulation, high voltage are modified the preparation method of rich lithium manganate cathode material for lithium | |
| CN103367705A (en) | Double-layer cladded composite lithium ion positive material and preparation method thereof | |
| CN110336035B (en) | Tin dioxide/aluminum oxide doped carbon composite material and preparation method thereof | |
| CN103730662B (en) | A kind of lithium ion battery negative silicon/carbon dioxide composite material and preparation method thereof | |
| CN113991089B (en) | Sodium ion battery and preparation method thereof | |
| CN103367721B (en) | A kind of preparation method of cobalt stannum carbon compound cathode materials | |
| CN103579585B (en) | A kind of anode composite material of lithium sulfur battery and Synthesis and applications 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 | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| CB03 | Change of inventor or designer information |
Inventor after: Zhang Bin Inventor before: Wang Yang |
|
| COR | Change of bibliographic data | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20160401 Address after: 013650 the Inner Mongolia Autonomous Region Xinghe County, Wulanchabu City Xing Mong Kok Industrial Park Applicant after: Wulanchabu Dasheng Graphite New Material Co., Ltd. Address before: 518000, Lianhua Road 1116, Lianhua Road, Futian District, Guangdong, Shenzhen, 34-505 Applicant before: Wang Yang |
|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |