CN103326010A - Process for preparing nano-silicon-doped composite-lithium-titanate anode materials - Google Patents
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- CN103326010A CN103326010A CN2013102198277A CN201310219827A CN103326010A CN 103326010 A CN103326010 A CN 103326010A CN 2013102198277 A CN2013102198277 A CN 2013102198277A CN 201310219827 A CN201310219827 A CN 201310219827A CN 103326010 A CN103326010 A CN 103326010A
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- 239000010405 anode material Substances 0.000 title claims abstract description 20
- 238000004519 manufacturing process Methods 0.000 title abstract 2
- 229910052744 lithium Inorganic materials 0.000 claims abstract description 33
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims abstract description 32
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims abstract description 27
- 239000005543 nano-size silicon particle Substances 0.000 claims abstract description 19
- 238000002360 preparation method Methods 0.000 claims abstract description 15
- 239000006258 conductive agent Substances 0.000 claims abstract description 9
- 239000002243 precursor Substances 0.000 claims abstract description 7
- 238000001035 drying Methods 0.000 claims abstract description 6
- 238000005469 granulation Methods 0.000 claims abstract description 5
- 230000003179 granulation Effects 0.000 claims abstract description 5
- 238000010438 heat treatment Methods 0.000 claims abstract description 3
- 239000002994 raw material Substances 0.000 claims abstract description 3
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 30
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 16
- 239000004408 titanium dioxide Substances 0.000 claims description 14
- 238000001816 cooling Methods 0.000 claims description 12
- 239000000843 powder Substances 0.000 claims description 12
- XGZVUEUWXADBQD-UHFFFAOYSA-L lithium carbonate Chemical compound [Li+].[Li+].[O-]C([O-])=O XGZVUEUWXADBQD-UHFFFAOYSA-L 0.000 claims description 10
- 229910052808 lithium carbonate Inorganic materials 0.000 claims description 10
- 238000005303 weighing Methods 0.000 claims description 10
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 8
- 239000011261 inert gas Substances 0.000 claims description 8
- 239000007787 solid Substances 0.000 claims description 6
- 238000003756 stirring Methods 0.000 claims description 6
- 238000010792 warming Methods 0.000 claims description 6
- 239000002245 particle Substances 0.000 claims description 5
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims description 4
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 4
- 239000006230 acetylene black Substances 0.000 claims description 4
- 229910052751 metal Inorganic materials 0.000 claims description 4
- 239000002184 metal Substances 0.000 claims description 4
- 229910002804 graphite Inorganic materials 0.000 claims description 3
- 239000010439 graphite Substances 0.000 claims description 3
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 3
- 238000012545 processing Methods 0.000 claims description 3
- 229910021487 silica fume Inorganic materials 0.000 claims description 3
- 229920000049 Carbon (fiber) Polymers 0.000 claims description 2
- 239000006245 Carbon black Super-P Substances 0.000 claims description 2
- 229910052786 argon Inorganic materials 0.000 claims description 2
- 239000004917 carbon fiber Substances 0.000 claims description 2
- 239000002041 carbon nanotube Substances 0.000 claims description 2
- 229910021393 carbon nanotube Inorganic materials 0.000 claims description 2
- 239000003795 chemical substances by application Substances 0.000 claims description 2
- 239000007789 gas Substances 0.000 claims description 2
- 229910021389 graphene Inorganic materials 0.000 claims description 2
- 239000001307 helium Substances 0.000 claims description 2
- 229910052734 helium Inorganic materials 0.000 claims description 2
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 claims description 2
- 239000003273 ketjen black Substances 0.000 claims description 2
- 239000000203 mixture Substances 0.000 claims description 2
- 229910052757 nitrogen Inorganic materials 0.000 claims description 2
- 239000003960 organic solvent Substances 0.000 claims description 2
- 238000010298 pulverizing process Methods 0.000 claims description 2
- 238000007873 sieving Methods 0.000 claims description 2
- 239000004575 stone Substances 0.000 claims description 2
- 239000000463 material Substances 0.000 abstract description 14
- 238000000034 method Methods 0.000 abstract description 9
- 239000002002 slurry Substances 0.000 abstract description 9
- 230000008569 process Effects 0.000 abstract description 7
- 239000002131 composite material Substances 0.000 abstract description 6
- 230000000694 effects Effects 0.000 abstract description 3
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 abstract 2
- 238000000889 atomisation Methods 0.000 abstract 1
- 239000011863 silicon-based powder Substances 0.000 abstract 1
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 6
- 229910001416 lithium ion Inorganic materials 0.000 description 6
- 229910052799 carbon Inorganic materials 0.000 description 5
- 235000013339 cereals Nutrition 0.000 description 5
- 230000008901 benefit Effects 0.000 description 4
- 239000003792 electrolyte Substances 0.000 description 4
- 239000002904 solvent Substances 0.000 description 4
- 238000012360 testing method Methods 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 3
- SECXISVLQFMRJM-UHFFFAOYSA-N N-Methylpyrrolidone Chemical compound CN1CCCC1=O SECXISVLQFMRJM-UHFFFAOYSA-N 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000012528 membrane Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 206010013786 Dry skin Diseases 0.000 description 1
- 229910002986 Li4Ti5O12 Inorganic materials 0.000 description 1
- 229910001290 LiPF6 Inorganic materials 0.000 description 1
- 239000002033 PVDF binder Substances 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000010406 cathode material Substances 0.000 description 1
- 239000011889 copper foil Substances 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000007772 electrode material Substances 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 235000013312 flour Nutrition 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 239000007773 negative electrode material Substances 0.000 description 1
- -1 polypropylene Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 229920002981 polyvinylidene fluoride Polymers 0.000 description 1
- 230000001376 precipitating effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 229910052596 spinel Inorganic materials 0.000 description 1
- 239000011029 spinel Substances 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
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
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- Battery Electrode And Active Subsutance (AREA)
Abstract
The invention discloses a process for preparing nano-silicon-doped composite-lithium-titanate anode materials, and raw materials are prepared by weight percentages. The process comprises steps of: (1) preparation of precursor slurry, (2) atomization, drying, granulation and classification, and (3) a heat treatment. By adopting nano silicon powder, the process of the invention prevents from a volume effect generated during charge-discharge processes caused by larger grain sizes of silicon powder, and ensures stability of materials during the charge-discharge processes; a composite treatment with lithium titanate is carried out meanwhile, and disadvantages such as lower capacity or the like of a single lithium titanate anode material are overcome; and a conductive agent is added in the composite material system so that a conductive network is formed in the inner of the material system, and conductivity of the composite material is increased.
Description
Technical field
The present invention relates to a kind of preparation method of lithium ion battery negative material, is a kind of preparation method who contains the composite lithium titanate negative material of nano-silicon doping specifically.
Background technology
Be widely used at present mobile phone, it is large that lithium ion battery in the electronic products such as notebook computer has a specific energy, specific power is high, self discharge is little, good and the quickly-chargeable of cycle characteristics and efficient are high, operating temperature range is wide, the advantages such as non-environmental-pollution, used lithium ion battery in the market, substantially all be as negative pole take material with carbon element, but material with carbon element is negative pole also has some weakness that are difficult to overcome in actual applications, for example, first in the discharge process with the electrolyte formation surface passivated membrane that reacts, cause the consumption of electrolyte and enclosed pasture efficient is lower first; The current potential of carbon electrode and the current potential of lithium metal are very approaching, when battery overcharge, and the easy precipitating metal lithium of carbon electrodes, thus may cause short circuit, and then cause battery explosion.In order to solve the safety problem of lithium battery, people have done a large amount of research.Spinel Li4Ti5O12 is as a kind of novel ion secondary battery cathode material lithium, compare with other business-like material, have good cycle, with electrolyte reaction, the advantage such as security performance is high, charge and discharge platform is steady, be one of the most excellent lithium ion battery negative material that received much concern in recent years.
Compare with the carbon negative electrode material, lithium titanate has a lot of advantages, wherein, the take off embedding of lithium ion in lithium titanate is reversible, and lithium ion is embedding or is deviating from the process of lithium titanate, its crystal formation does not change, change in volume is less than 1%, therefore be called as " zero strain material ", can avoid in the charge and discharge cycles owing to stretching back and forth of electrode material causes structural damage, thereby improve cycle performance and the useful life of electrode, reduced with the cycle-index increase and brought specific capacity significantly to decay, have the cycle performance better than carbon negative pole; But, because lithium titanate is a kind of insulating material, its conductivity is low, thereby cause the application in the lithium electricity to have the relatively poor problem of high rate performance, the lithium titanate material theoretical specific capacity is 175 mAh/g simultaneously, and actual specific capacity has the shortcomings such as gram volume is lower greater than 160mAh/g, therefore, it is very necessary carrying out modification for lithium titanate.
Summary of the invention
Technical problem solved by the invention is to provide a kind of preparation method of nano-silicon doped and compounded lithium titanate anode material, to solve the problem that proposes in the above-mentioned background technology.
In order to achieve the above object, the present invention realizes by the following technical solutions:
A kind of preparation method of nano-silicon doped and compounded lithium titanate anode material, raw material comprises following processing step according to weight ratio:
(1) preparation precursor pulp: according to titanium dioxide: the ratio of lithium carbonate: nano-silicon: conductive agent=100:38～40:3～5:5～10, taking by weighing each component is scattered in the organic solvent ethanol, regulate solid content to 20%～40%, then constantly stir, obtain precursor pulp;
(2) atomizing, drying, granulation and classification: the middle precursor pulp for preparing of step (1) by atomizing, drying and granulation, is obtained the powder of average grain diameter between 5～15 μ m through particle classifying again;
(3) heat treatment: with resulting powder in the step (2) under the protection of inert gas; speed with 10～20 ℃/min is warming up to 1000～1200 ℃; be incubated again 0.5～5h; naturally cooling namely obtains high power capacity lithium titanate anode material of the present invention through pulverizing, sieving after the cooling.
Further, the titanium dioxide described in the step (1) is a kind of in anatase titanium dioxide or the metal and stone type titanium dioxide.
Further, the particle diameter of the nano silica fume described in the step (1) is not more than 100 nanometers.
Further, conductive agent described in the step (1) is one or more the mixture in acetylene black, Super-P, Ketjen black, graphite agent, carbon fiber, carbon nano-tube, the Graphene.
Further, the inlet temperature of the spray-dired hot-air described in the step (2) is 200 ℃～300 ℃, and outlet temperature is 40 ℃～90 ℃.
Further, inert gas is a kind of in nitrogen, argon gas, the helium in the step (3).
Beneficial effect:
The present invention is by selecting nano silica fume, avoided silica flour because of the large bulk effect that when discharging and recharging, produces of particle diameter, guaranteed the stability in charge and discharge process of material, simultaneously and lithium titanate carry out Combined Processing, solved the shortcomings such as single lithium titanate anode material capacity is on the low side; By in composite system, adding conductive agent, be to make the inner conductive network that forms of material system again, increase the electric conductivity of composite material.
Embodiment
In order to make technological means of the present invention, creation characteristic, workflow, using method reach purpose and effect is easy to understand, below in conjunction with specific embodiment, further set forth the present invention.
Embodiment 1
According to titanium dioxide: the ratio of lithium carbonate: nano-silicon: conductive agent=100:38:3:10, taking by weighing 1000g titanium dioxide, 380g lithium carbonate, 30g nano-silicon, 50g acetylene black, is 30% ratio according to solid content, takes by weighing in the alcohol solvent of 3406g, constantly stir, be mixed into even slurry; Again slurry is sprayed, dry, classification, obtain the powder that average grain diameter is 10 μ m, again with powder under the protection of inert gas; speed with 20 ℃/min is warming up to 1100 ℃; be incubated 3h, cooling is sieved after the cooling and is namely obtained the doped and compounded lithium titanate anode material naturally again.
Embodiment 2
According to titanium dioxide: the ratio of lithium carbonate: nano-silicon: conductive agent=100:40:3:10, taking by weighing 1000g titanium dioxide, 400g lithium carbonate, 30g nano-silicon, 50gSuper-P, is 30% ratio according to solid content, takes by weighing in the alcohol solvent of 3453g, constantly stir, be mixed into even slurry; Again slurry is sprayed, dry, classification, obtain the powder that average grain diameter is 10 μ m, again with powder under the protection of inert gas; speed with 20 ℃/min is warming up to 1100 ℃; be incubated 3h, cooling is sieved after the cooling and is namely obtained the doped and compounded lithium titanate anode material naturally again.
Embodiment 3
According to titanium dioxide: the ratio of lithium carbonate: nano-silicon: conductive agent=100:40:5:10, take by weighing 1000g titanium dioxide, 400g lithium carbonate, 50g nano-silicon, 50g electrically conductive graphite KS-6, it is 30% ratio according to solid content, take by weighing in the alcohol solvent of 3500g, constantly stir, be mixed into even slurry; Again slurry is sprayed, dry, classification, obtain the powder that average grain diameter is 10 μ m, again with powder under the protection of inert gas; speed with 20 ℃/min is warming up to 1100 ℃; be incubated 3h, cooling is sieved after the cooling and is namely obtained the doped and compounded lithium titanate anode material naturally again.
Comparative Examples 1
According to the ratio of titanium dioxide: lithium carbonate=100:40, take by weighing 1000g titanium dioxide, 400g lithium carbonate, be 30% ratio according to solid content, take by weighing in the alcohol solvent of 3366g, constantly stir, be mixed into even slurry; Again slurry is sprayed, dry, classification, obtain the powder that average grain diameter is 6 μ m, again with powder under the protection of inert gas; speed with 20 ℃/min is warming up to 1100 ℃; be incubated 3h, cooling is sieved after the cooling and is namely obtained the doped and compounded lithium titanate anode material naturally again.
Electrochemical property test
Performance for the doped and compounded lithium titanate anode material of check the inventive method preparation, test with the half-cell method of testing, negative material with above embodiment and comparative example: acetylene black: the PVDF(Kynoar)=the 93:3:4(weight ratio), add an amount of NMP(N-methyl pyrrolidone) the furnishing pulpous state, coat on the Copper Foil, made negative plate in 8 hours through 110 ℃ of dryings of vacuum; Take metal lithium sheet as to electrode, electrolyte is 1mol/L LiPF6/EC+DEC+DMC=1:1:1, and microporous polypropylene membrane is barrier film, is assembled into battery.Charging/discharging voltage is 1.0～2.5V, and charge-discharge velocity is 0.5C, and battery performance is carried out and can test, and test result sees Table 1.
Table 1 be negative material in different embodiment and the comparative example Performance Ratio
Above demonstration and described basic principle of the present invention, principal character and advantage of the present invention.The technical staff of the industry should understand; the present invention is not restricted to the described embodiments; that describes in above-described embodiment and the specification just illustrates principle of the present invention; without departing from the spirit and scope of the present invention; the present invention also has various changes and modifications, and these changes and improvements all fall in the claimed scope of the invention.Claimed scope of the present invention is defined by appending claims and equivalent thereof.
Claims (6)
1. the preparation method of a nano-silicon doped and compounded lithium titanate anode material, raw material comprises following processing step according to weight ratio:
(1) preparation precursor pulp: according to titanium dioxide: the ratio of lithium carbonate: nano-silicon: conductive agent=100:38～40:3～5:5～10, taking by weighing each component is scattered in the organic solvent ethanol, regulate solid content to 20%～40%, then constantly stir, obtain precursor pulp;
(2) atomizing, drying, granulation and classification: the middle precursor pulp for preparing of step (1) by atomizing, drying and granulation, is obtained the powder of average grain diameter between 5～15 μ m through particle classifying again;
(3) heat treatment: with resulting powder in the step (2) under the protection of inert gas; speed with 10～20 ℃/min is warming up to 1000～1200 ℃; be incubated again 0.5～5h; naturally cooling namely obtains high power capacity lithium titanate anode material of the present invention through pulverizing, sieving after the cooling.
2. the preparation method of a kind of nano-silicon doped and compounded lithium titanate anode material according to claim 1 is characterized in that, the titanium dioxide described in the step (1) is a kind of in anatase titanium dioxide or the metal and stone type titanium dioxide.
3. the preparation method of a kind of nano-silicon doped and compounded lithium titanate anode material according to claim 1 is characterized in that, the particle diameter of the nano silica fume described in the step (1) is not more than 100 nanometers.
4. the preparation method of a kind of nano-silicon doped and compounded lithium titanate anode material according to claim 1, it is characterized in that, conductive agent described in the step (1) is one or more the mixture in acetylene black, Super-P, Ketjen black, graphite agent, carbon fiber, carbon nano-tube, the Graphene.
5. the preparation method of a kind of nano-silicon doped and compounded lithium titanate anode material according to claim 1 is characterized in that, the inlet temperature of the spray-dired hot-air described in the step (2) is 200 ℃～300 ℃, and outlet temperature is 40 ℃～90 ℃.
6. the preparation method of a kind of nano-silicon doped and compounded lithium titanate anode material according to claim 1 is characterized in that, inert gas is a kind of in nitrogen, argon gas, the helium in the step (3).
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104966828A (en) * | 2015-08-07 | 2015-10-07 | 田东 | Preparation method of high-capacity lithium battery negative electrode material |
| CN105006562A (en) * | 2015-06-05 | 2015-10-28 | 田东 | Preparation method of multiphase metal doped lithium titanate negative electrode materials |
| CN105006555A (en) * | 2015-08-07 | 2015-10-28 | 田东 | Preparation method of compound lithium titanate anode material doped with metallic tin |
| US20150333315A1 (en) * | 2014-05-13 | 2015-11-19 | Samsung Sdi Co., Ltd. | Negative electrode and lithium battery including the same |
| CN106129394A (en) * | 2016-08-26 | 2016-11-16 | 深圳博磊达新能源科技有限公司 | A kind of lithium titanate anode material and lithium titanate battery |
| CN106856240A (en) * | 2017-01-06 | 2017-06-16 | 中昕（福建）石墨烯科技有限公司 | A kind of Graphene electrokinetic cell of superior performance and preparation method thereof |
| CN108574094A (en) * | 2018-05-09 | 2018-09-25 | 河北银隆新能源有限公司 | Negative electrode material for lithium ion battery and preparation method thereof |
| CN109950491A (en) * | 2019-03-22 | 2019-06-28 | 上海昱瓴新能源科技有限公司 | Lithium titanate silicon substrate composite negative pole material and preparation method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010040285A1 (en) * | 2008-10-07 | 2010-04-15 | 深圳市贝特瑞新能源材料股份有限公司 | Titanium-containing active material for negative electrodes and its production method and titanium-containing power lithium battery |
| CN102664252A (en) * | 2012-05-19 | 2012-09-12 | 哈尔滨工业大学 | Preparation method of lithium ion battery negative electrode composite material Li4Ti5O12/AB/CNT |
| CN102891306A (en) * | 2012-10-23 | 2013-01-23 | 中国科学院过程工程研究所 | A kind of lithium ion battery Si/Li4Ti5O12/CNT composite negative electrode material and preparation method thereof |
-
2013
- 2013-06-05 CN CN2013102198277A patent/CN103326010A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010040285A1 (en) * | 2008-10-07 | 2010-04-15 | 深圳市贝特瑞新能源材料股份有限公司 | Titanium-containing active material for negative electrodes and its production method and titanium-containing power lithium battery |
| CN102664252A (en) * | 2012-05-19 | 2012-09-12 | 哈尔滨工业大学 | Preparation method of lithium ion battery negative electrode composite material Li4Ti5O12/AB/CNT |
| CN102891306A (en) * | 2012-10-23 | 2013-01-23 | 中国科学院过程工程研究所 | A kind of lithium ion battery Si/Li4Ti5O12/CNT composite negative electrode material and preparation method thereof |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20150333315A1 (en) * | 2014-05-13 | 2015-11-19 | Samsung Sdi Co., Ltd. | Negative electrode and lithium battery including the same |
| CN105006562A (en) * | 2015-06-05 | 2015-10-28 | 田东 | Preparation method of multiphase metal doped lithium titanate negative electrode materials |
| CN104966828A (en) * | 2015-08-07 | 2015-10-07 | 田东 | Preparation method of high-capacity lithium battery negative electrode material |
| CN105006555A (en) * | 2015-08-07 | 2015-10-28 | 田东 | Preparation method of compound lithium titanate anode material doped with metallic tin |
| WO2017024896A1 (en) * | 2015-08-07 | 2017-02-16 | 田东 | Preparation method for metal-doped composite lithium titanate negative electrode material |
| CN106129394A (en) * | 2016-08-26 | 2016-11-16 | 深圳博磊达新能源科技有限公司 | A kind of lithium titanate anode material and lithium titanate battery |
| CN106129394B (en) * | 2016-08-26 | 2019-08-23 | 深圳博磊达新能源科技有限公司 | A kind of lithium titanate anode material and lithium titanate battery |
| CN106856240A (en) * | 2017-01-06 | 2017-06-16 | 中昕（福建）石墨烯科技有限公司 | A kind of Graphene electrokinetic cell of superior performance and preparation method thereof |
| CN106856240B (en) * | 2017-01-06 | 2020-03-24 | 中昕（福建）石墨烯科技有限公司 | Graphene power battery with excellent performance and preparation method thereof |
| CN108574094A (en) * | 2018-05-09 | 2018-09-25 | 河北银隆新能源有限公司 | Negative electrode material for lithium ion battery and preparation method thereof |
| CN109950491A (en) * | 2019-03-22 | 2019-06-28 | 上海昱瓴新能源科技有限公司 | Lithium titanate silicon substrate composite negative pole material and preparation method thereof |
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Application publication date: 20130925 |