CN102610804A - Preparing method of negative electrode material for lithium ion battery, negative electrode of lithium ion battery, and lithium ion battery - Google Patents
Preparing method of negative electrode material for lithium ion battery, negative electrode of lithium ion battery, and lithium ion battery Download PDFInfo
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- CN102610804A CN102610804A CN2012100929466A CN201210092946A CN102610804A CN 102610804 A CN102610804 A CN 102610804A CN 2012100929466 A CN2012100929466 A CN 2012100929466A CN 201210092946 A CN201210092946 A CN 201210092946A CN 102610804 A CN102610804 A CN 102610804A
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- ion battery
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- battery negative
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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 provides a preparing method of a negative electrode material for a lithium ion battery. The negative electrode material for the lithium ion battery is obtained by processing a graphite carbon material in a plasma processing device. The invention further provides a negative electrode of the lithium ion battery and the lithium ion battery. The obtained negative electrode material for the lithium ion battery has good soakage to electrolyte, so that the soakage of the negative electrode of the lithium ion battery prepared by using the negative electrode material is improved accordingly. In this way, the soaking degree to the electrolyte of the negative electrode is guaranteed under the condition that the compacting density of the negative electrode of the lithium ion battery is higher, the unit volume loading level of the graphite carbon material for the negative electrode of the lithium ion battery is improved, and then the purpose of increasing the energy density of the lithium ion battery is achieved.
Description
Technical field
The present invention relates to field of batteries, particularly a kind of preparation method of lithium ion battery negative material, lithium ion battery negative and lithium ion battery.
Background technology
Current, the mankind are being faced with the double challenge that resource is estimated and living environment worsens.For this reason, new material is being made great efforts to research and develop in countries in the world, advances the new concept of low-carbon (LC) life, promotes human society to turn to sustainable development mode energy-saving, capable of circulation by present high energy consumption, the high flow rate life mode of production.Be specially the application of wideling popularize clean energy resource,, and use hybrid vehicle or pure electric automobile to replace using at present the orthodox car of gasoline like the application of solar energy, wind energy at power field.
The application of clean energy resource and novel vapour all be unable to do without medium-and-large-sized energy-storage battery and electrokinetic cell.In numerous energy-storage batteries and electrokinetic cell; Lithium rechargeable battery is owing to have high energy density and long useful life; Replaced traditional ni-mh/NI-G secondary cell gradually, it has the great development prospect at emerging fields such as new-energy automobile, wind-powered electricity generation energy storage and solar energy storages.
The critical component of lithium ion battery comprises positive pole, negative pole, electrolyte and barrier film, and they have determined the performance of lithium ion battery jointly.Lithium ion cell positive mainly contains LiCoO
2, LiNiO
2, LiMn
2O
4, LiFePO
4Deng, every kind of material all has respective field of application; At present, the negative pole of commercialization lithium ion battery is a carbon-based material.Other candidate's negative material comprises silicon system, tin system etc., and the performance of these materials can't satisfy the commercialization needs.At present, the carbon back negative material of commercialization lithium ion battery mainly is the spin-off, electrographite material etc. after natural type graphite and the modification thereof.
The shortcoming of natural graphite material is that impurity content is higher; Compare with the electrographite product; The advantage of native graphite is than being easier to compacting, promptly can filling more active electrode material in the unit volume, but its maximum shortcoming is bad with the wettability of lithium-ion battery electrolytes.
The structure of lithium ion battery negative is a porous electrode in essence; Whether exist electrolyte very big in the hole to the battery performance influence; If the wettability of negative pole and electrolyte is bad, just do not have electrolyte in the hole of porous electrode, or the content of electrolyte seldom; Be not can not participate in charge and discharge process in the work of battery, therefore cause the specific capacity of battery to reduce by the wetting graphitic carbon material of electrolyte.Therefore, the wettability of improving negative pole graphitic carbon material and electrolyte is for the energy density ten minutes key that improves lithium ion battery.
Existing improved approach mainly comprises the exploitation of novel conductive agent, binding agent.But, even the wettability of conductive agent and binding agent is good again, also can obviously not improve the wettability of graphitic carbon negative material to electrolyte, because the addition of conductive agent and binding agent is very limited in negative pole, the theme of negative pole remains the graphitic carbon material.Essential method is directly to improve the wettability of graphitic carbon negative material.
Summary of the invention
The technical problem that the present invention solves is to provide a kind of preparation method, lithium ion battery negative and lithium ion battery of lithium ion battery negative material, and lithium ion battery negative material provided by the invention and lithium ion battery negative have good wettability to electrolyte.
For realizing above-mentioned purpose, the present invention provides following technical scheme:
A kind of preparation method of lithium ion battery negative material especially, places plasma processing apparatus to handle the graphitic carbon material, obtains lithium ion battery negative material.
Preferably, in the preparation method of above-mentioned lithium ion battery negative material, the atmosphere in the said plasma processing apparatus is selected from ammonia, oxygen, air, carbon dioxide, hydrogen sulfide or steam.
Preferably, in the preparation method of above-mentioned lithium ion battery negative material, the air pressure in the said plasma processing apparatus is 1Pa～100Pa, and temperature is-30～80 ℃, and the power of Cement Composite Treated by Plasma is 1W～1000W/cm
2, the time of said graphitic carbon material processed is 2min～2h.
The invention also discloses a kind of lithium ion battery negative, especially, said lithium ion battery negative comprises conducting base and above-mentioned lithium ion battery negative material, and said lithium ion battery negative material is coated on the said conducting base.
The invention also discloses a kind of lithium ion battery, especially, comprising: anodal, above-mentioned lithium ion battery negative, be arranged on barrier film and electrolyte between positive pole and the negative pole.
The invention also discloses a kind of preparation method of lithium ion battery negative, especially, comprise the steps:
(1) with the graphitic carbon coated materials on conducting base;
The conducting base that (2) will be coated with the graphitic carbon material places plasma processing apparatus to handle, and obtains lithium ion battery negative.
Preferably, in the preparation method of above-mentioned lithium ion battery negative, the atmosphere in the said plasma processing apparatus is selected from ammonia, oxygen, air, carbon dioxide, hydrogen sulfide or steam.
Preferably, in the preparation method of above-mentioned lithium ion battery negative, the air pressure in the said plasma processing apparatus is 1Pa～100Pa, and temperature is-30～80 ℃, and the power of Cement Composite Treated by Plasma is 1W～1000W/cm
2, the time of the processing of the said conducting base that is coated with the graphitic carbon material is 2min～2h.
The invention also discloses a kind of above-mentioned lithium ion cell prepared negative pole.
The invention also discloses a kind of lithium ion battery, especially, comprising: anodal, above-mentioned lithium ion battery negative, be arranged on barrier film and electrolyte between positive pole and the negative pole.
The invention provides a kind of preparation method of lithium ion battery negative material, this lithium ion battery negative material is through placing plasma processing apparatus to handle acquisition the graphitic carbon material.The lithium ion battery negative material that is obtained has good wettability to electrolyte.
The present invention also provides a kind of preparation method of lithium ion battery negative: at first with the graphitic carbon coated materials on conducting base; The conducting base that will be coated with the graphitic carbon material then places plasma processing apparatus to handle, thereby obtains lithium ion battery negative.The lithium ion battery negative that is obtained has good wettability to electrolyte, and has high energy density by the lithium ion battery that it makes.
Embodiment
The purpose of this invention is to provide and a kind ofly improve graphite products after native graphite and native graphite improve the wettability of lithium-ion battery electrolytes; Thereby guarantee that negative pole is to the infiltration degree of lithium-ion battery electrolytes under the higher condition of the compacted density of graphitic carbon negative pole; Reach the unit volume loading that improves lithium ion battery negative graphitic carbon material, and and then improve the purpose of lithium ion battery volume energy density.
In order further to understand the present invention, below in conjunction with embodiment the preferred embodiment of the invention is described, describe just to further specifying feature and advantage of the present invention but should be appreciated that these, rather than to the restriction of claim of the present invention.
The embodiment of the invention discloses a kind of preparation method of lithium ion battery negative material, it places plasma processing apparatus to handle the graphitic carbon material, obtains lithium ion battery negative material.
The graphitic carbon material can be natural graphitic carbon material, also can be various modified natural graphite material with carbon elements.
Preferably from ammonia, oxygen, air, carbon dioxide, hydrogen sulfide or steam, air pressure is preferably 1Pa～100Pa to atmosphere in the plasma processing apparatus, and temperature is preferably-30～80 ℃, and the power of Cement Composite Treated by Plasma is preferably 1W～1000W/cm
2, the time of said graphitic carbon material processed is preferably 2min～2h.
The embodiment of the invention also discloses a kind of lithium ion battery negative, said lithium ion battery negative comprises conducting base and above-mentioned lithium ion battery negative material, and said lithium ion battery negative material is coated on the said conducting base.Conducting base is preferably Copper Foil.
The embodiment of the invention also discloses a kind of lithium ion battery, comprising: anodal, above-mentioned lithium ion battery negative, be arranged on barrier film and electrolyte between positive pole and the negative pole.
By the lithium ion battery negative material that above-mentioned preparation method obtained, given graphitic carbon material surface polarity, thus the wettability of improvement and electrolyte.The wettability of the lithium ion battery negative that is made by this lithium ion battery negative material is also improved accordingly.Thereby guarantee under the higher condition of the compacted density of lithium ion battery negative negative pole to the infiltration degree of electrolyte, reach the unit volume loading that improves lithium ion battery negative graphitic carbon material, and and then improve the purpose of lithium ion battery energy density.
The embodiment of the invention also discloses a kind of preparation method of lithium ion battery negative, comprise the steps:
(1) with the graphitic carbon coated materials on conducting base;
The conducting base that (2) will be coated with the graphitic carbon material places plasma processing apparatus to handle, and obtains lithium ion battery negative.
In the preparation method of lithium ion battery negative; Atmosphere in the plasma processing apparatus is preferably from ammonia, oxygen, air, carbon dioxide, hydrogen sulfide or steam; Air pressure is preferably 1Pa～100Pa, and temperature is preferably-30～80 ℃, and the power of Cement Composite Treated by Plasma is preferably 1W～1000W/cm
2, the time of the processing of the said conducting base that is coated with the graphitic carbon material is 2min～2h.
The embodiment of the invention also discloses a kind of by above-mentioned preparation method's lithium ion cell prepared negative pole.
The embodiment of the invention also discloses a kind of lithium ion battery, comprising: anodal, above-mentioned lithium ion battery negative, be arranged on barrier film and electrolyte between positive pole and the negative pole.
Among the preparation method of above-mentioned lithium ion battery negative, the lithium ion battery negative that is obtained has good wettability to electrolyte.Thereby guarantee under the higher condition of the compacted density of lithium ion battery negative negative pole to the infiltration degree of electrolyte, reach the unit volume loading that improves lithium ion battery negative graphitic carbon material, and and then improve the purpose of lithium ion battery energy density.
In order further to understand the present invention, technical scheme of the present invention is described below in conjunction with embodiment.Protection scope of the present invention is not limited by the following examples.
Embodiment 1
, be placed in the plasma processing apparatus as the sample that is processed with the native graphite material with carbon element of certain factory, the control and treatment temperature is 80 ℃, and the processing power of plasma is 1000W/cm
2, the pressure of setting plasma processing apparatus is 100Pa, under carbon dioxide atmosphere, handles 2 hours, obtains lithium ion battery negative material, takes out lithium ion battery negative material.
Sample and untreated sample with the processing of identical weight place two parts of identical lithium-ion battery electrolytes respectively, behind the certain hour, can find that through observing the suspension of the sample of handling is worse than untreated sample.Further, two duplicate samples are taken out carry out weighing, the weight of the sample that can find to handle is obviously greater than untreated sample.Hence one can see that: the wettability of the sample of handling is better than untreated sample.
Embodiment 2
, adopt coating method to be applied on the Copper Foil conducting base this material, and place plasma processing apparatus as research object with the modified natural graphite material with carbon element of certain plant produced; Under the ammonia condition, this finished electrode is handled then; Processing atmosphere is ammonia, and pressure is 20Pa, and the time is 30 minutes; Treatment temperature is 20 ℃, and the power of processing is 5W/cm
2, electrode (lithium ion battery negative) is taken out in the back that disposes, and lithium-ion battery electrolytes is dripped on the electrode surface of handling, and finds that the drop of electrolyte scatters very soon; As a comparison, lithium-ion battery electrolytes is dropped in untreated graphitic carbon negative terminal surface, find that drop does not scatter, it is contraction-like that drop becomes.Above-mentioned experiment confirm, ammonia plasmas are handled the immersion liquid ability of back sample and are obviously improved.
With above-mentioned modified graphite carbon dust material is research object, is placed in the plasma processing apparatus, under the ammonia condition, this dusty material is handled then; Processing atmosphere is ammonia, and pressure is 20Pa, and the time is 60 minutes; Treatment temperature is 0 ℃, and the power of processing is 20W/cm
2, after disposing, respectively with untreated powder with handle powder (lithium ion battery negative material) as active electrode material, adopt coating method to prepare negative material, be applied to the Copper Foil top, about 0.12 millimeter of thickness.After being assembled into 2016 button cells; Place and test capacity of negative plates two days later; The capacity of untreated graphitic carbon material is 330mAh/g; Capacity by the negative pole (lithium ion battery negative) of handling the graphitic carbon material preparation is 352mAh/g, has proved that the immersion liquid ability is obviously improved after material is through Cement Composite Treated by Plasma under the ammonia atmosphere.As further contrast, that use to handle respectively prepares negative plate with untreated graphite material, assembles 2016 battery testing capacity of negative plates then, on the negative plate through filming about 1 millimeter of back active material thickness repeatedly.The charge-discharge test result shows; Capacity with the electrode (lithium ion battery negative) of handling material preparation is 270mAh/g, and the negative plate of the graphite material preparation of being untreated, because pole piece is thicker; The weakness of immersion liquid ability is exaggerated, and capacity has only 200mAh/g.Confirm that further Cement Composite Treated by Plasma can obviously be improved the wettability of native graphite class material to lithium-ion battery electrolytes under the ammonia atmosphere.
Embodiment 3
As research object, adopt coating method to be applied on the Copper Foil conducting base about 0.18 millimeter of the thickness of filming this material with the native graphite material with carbon element of certain factory; Be placed in the plasma processing apparatus, under the oxygen condition, this finished electrode handled then, processing atmosphere is oxygen, and pressure is 1Pa, and the time is 2 minutes, and treatment temperature is 80 ℃, and the power of processing is 1W/cm
2, electrode (lithium ion battery negative) is taken out in the back that disposes, and lithium-ion battery electrolytes is dripped on the electrode surface of handling, and the discovery electrolyte drops is scattered very soon; As a comparison, the drop of lithium-ion battery electrolytes is dripped in the surface of untreated graphitic carbon negative pole, find that drop does not scatter, it is contraction-like that drop becomes.Above-mentioned experiment confirm, oxygen gas plasma are handled the immersion liquid ability of back sample and are obviously improved.
With above-mentioned processing and untreated graphitic carbon electrode as negative pole, with the lithium sheet as to electrode, with 1MLiPF
6/ EC+DMC adds that as electrolyte corresponding barrier film is assembled into 2016 button cells, carries out charge-discharge test after the battery assembled immediately; Experiment confirm; For the graphitic carbon negative pole of handling, circulation volume is 323mAh/g first, for untreated graphitic carbon negative pole; Circulation volume is 300mAh/g first, shows can obviously improve the wettability between material and the electrolyte after with oxygen the graphitic carbon electrode plasma being handled.
Embodiment 4
, be placed in the plasma processing apparatus as the sample that is processed with the native graphite material with carbon element of certain factory, the control and treatment temperature is 30 ℃, and the processing power of plasma is 1000W/cm
2, the pressure of setting plasma processing apparatus is 10Pa, under vapour atmosphere, handles 2 hours, obtains lithium ion battery negative material, takes out lithium ion battery negative material.
Sample and untreated sample with the processing of identical weight place two parts of identical lithium-ion battery electrolytes respectively, behind the certain hour, can find that through observing the suspension of the sample of handling is worse than untreated sample.Further, two duplicate samples are taken out carry out weighing, the weight of the sample that can find to handle is obviously greater than untreated sample.Hence one can see that: the wettability of the sample of handling is better than untreated sample.
Embodiment 5
, be placed in the plasma processing apparatus as the sample that is processed with the modified natural graphite material with carbon element of certain plant produced, the control and treatment temperature is-30 ℃, and the processing power of plasma is 20W/cm
2, the pressure of setting plasma processing apparatus is 30Pa, under air atmosphere, handles 2 hours, obtains lithium ion battery negative material, takes out lithium ion battery negative material.
Sample and untreated sample with the processing of identical weight place two parts of identical lithium-ion battery electrolytes respectively, behind the certain hour, can find that through observing the suspension of the sample of handling is worse than untreated sample.Further, two duplicate samples are taken out carry out weighing, the weight of the sample that can find to handle is obviously greater than untreated sample.Hence one can see that: the wettability of the sample of handling is better than untreated sample.
Embodiment 6
, be placed in the plasma processing apparatus as the sample that is processed with the modified natural graphite material with carbon element of certain plant produced, the control and treatment temperature is 20 ℃, and the processing power of plasma is 10W/cm
2, the pressure of setting plasma processing apparatus is 20Pa, under hydrogen sulfide atmosphere, handles 2 hours, obtains lithium ion battery negative material, takes out lithium ion battery negative material.
Sample and untreated sample with the processing of identical weight place two parts of identical lithium-ion battery electrolytes respectively, behind the certain hour, can find that through observing the suspension of the sample of handling is worse than untreated sample.Further, two duplicate samples are taken out carry out weighing, the weight of the sample that can find to handle is obviously greater than untreated sample.Hence one can see that: the wettability of the sample of handling is better than untreated sample.
Adopt coating method to be prepared into negative plate with untreated with the graphite carbon dust of handling respectively; Carry out charge-discharge test immediately after being assembled into button cell; The result confirms; The sample capacity of handling is 346mAh/g, and untreated be 323mAh/g, confirmed surface plasma handle afterwards wettability be improved significantly.
Embodiment 7
, be placed in the plasma processing apparatus as the sample that is processed with the modified natural graphite material with carbon element of certain plant produced, the control and treatment temperature is 20 ℃, and the processing power of plasma is 200W/cm
2, the pressure of setting plasma processing apparatus is 70Pa, under oxygen atmosphere, handles 1.5 hours, obtains lithium ion battery negative material, takes out lithium ion battery negative material.
Sample and untreated sample with the processing of identical weight place two parts of identical lithium-ion battery electrolytes respectively, behind the certain hour, can find that through observing the suspension of the sample of handling is worse than untreated sample.Further, two duplicate samples are taken out carry out weighing, the weight of the sample that can find to handle is obviously greater than untreated sample.Hence one can see that: the wettability of the sample of handling is better than untreated sample.
Adopt coating method to be prepared into negative plate with untreated with the graphite carbon dust of handling respectively; Carry out charge-discharge test immediately after being assembled into button cell; The result confirms; The sample capacity of handling is 334mAh/g, and untreated be 313mAh/g, confirmed surface plasma handle afterwards wettability be improved significantly.
Embodiment 8
, be placed in the plasma processing apparatus as the sample that is processed with the native graphite material with carbon element of certain plant produced, the control and treatment temperature is 30 ℃, and the processing power of plasma is 50W/cm
2, the pressure of setting plasma processing apparatus is 50Pa, under ammonia atmosphere, handles 1 hour, obtains lithium ion battery negative material, takes out lithium ion battery negative material.
Sample and untreated sample with the processing of identical weight place two parts of identical lithium-ion battery electrolytes respectively, behind the certain hour, can find that through observing the suspension of the sample of handling is worse than untreated sample.Further, two duplicate samples are taken out carry out weighing, the weight of the sample that can find to handle is obviously greater than untreated sample.Hence one can see that: the wettability of the sample of handling is better than untreated sample.
Adopt coating method to be prepared into negative plate with untreated with the graphite carbon dust of handling respectively; Carry out charge-discharge test immediately after being assembled into button cell; The result confirms; The sample capacity of handling is 352mAh/g, and untreated be 323mAh/g, confirmed surface plasma handle afterwards wettability be improved significantly.
The explanation of above embodiment just is used for helping to understand method of the present invention and core concept thereof.Should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the principle of the invention, can also carry out some improvement and modification to the present invention, these improvement and modification also fall in the protection range of claim of the present invention.
To the above-mentioned explanation of the disclosed embodiments, make this area professional and technical personnel can realize or use the present invention.Multiple modification to these embodiment will be conspicuous concerning those skilled in the art, and defined General Principle can realize under the situation that does not break away from the spirit or scope of the present invention in other embodiments among this paper.Therefore, the present invention will can not be restricted to these embodiment shown in this paper, but will meet and principle disclosed herein and features of novelty the wideest corresponding to scope.
Claims (10)
1. the preparation method of a lithium ion battery negative material is characterized in that: place plasma processing apparatus to handle the graphitic carbon material, obtain lithium ion battery negative material.
2. the preparation method of lithium ion battery negative material according to claim 1, it is characterized in that: the atmosphere in the said plasma processing apparatus is selected from ammonia, oxygen, air, carbon dioxide, hydrogen sulfide or steam.
3. the preparation method of lithium ion battery negative material according to claim 1, it is characterized in that: the air pressure in the said plasma processing apparatus is 1Pa～100Pa, and temperature is-30～80 ℃, and the power of Cement Composite Treated by Plasma is 1W～1000W/cm
2, the time of said graphitic carbon material processed is 2min～2h.
4. lithium ion battery negative, it is characterized in that: said lithium ion battery negative comprises conducting base and the described lithium ion battery negative material of claim 1, and said lithium ion battery negative material is coated on the said conducting base.
5. a lithium ion battery is characterized in that, comprising: positive pole, the described lithium ion battery negative of claim 4, be arranged on barrier film and electrolyte between positive pole and the negative pole.
6. the preparation method of a lithium ion battery negative is characterized in that, comprises the steps:
(1) with the graphitic carbon coated materials on conducting base;
The conducting base that (2) will be coated with the graphitic carbon material places plasma processing apparatus to handle, and obtains lithium ion battery negative.
7. the preparation method of lithium ion battery negative according to claim 6, it is characterized in that: the atmosphere in the said plasma processing apparatus is selected from ammonia, oxygen, air, carbon dioxide, hydrogen sulfide or steam.
8. the preparation method of lithium ion battery negative according to claim 6, it is characterized in that: the air pressure in the said plasma processing apparatus is 1Pa～100Pa, and temperature is-30～80 ℃, and the power of Cement Composite Treated by Plasma is 1W～1000W/cm
2, the time of the processing of the said conducting base that is coated with the graphitic carbon material is 2min～2h.
9. claim 6 lithium ion cell prepared negative pole.
10. a lithium ion battery is characterized in that, comprising: positive pole, the described lithium ion battery negative of claim 9, be arranged on barrier film and electrolyte between positive pole and the negative pole.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105428655A (en) * | 2015-12-29 | 2016-03-23 | 湖州创亚动力电池材料有限公司 | Method for improving utilization rate of carbon negative electrode active substance |
| CN106654235A (en) * | 2017-02-08 | 2017-05-10 | 深圳市贝特瑞新能源材料股份有限公司 | Composite graphite material and preparation method thereof and lithium-ion battery comprising composite graphite material |
| CN113571687A (en) * | 2021-07-23 | 2021-10-29 | 江南大学 | Preparation and application of zinc ion battery negative electrode material |
| CN114068885A (en) * | 2020-07-30 | 2022-02-18 | 湖南中科星城石墨有限公司 | Graphite material with porous carbon layer and preparation method and application thereof |
| CN114695833A (en) * | 2022-03-01 | 2022-07-01 | 北京化工大学 | Lithium dendrite inhibition device, system and method for lithium metal battery negative electrode material |
| CN116002678A (en) * | 2023-03-28 | 2023-04-25 | 宁波杉杉新材料科技有限公司 | Modified graphite negative electrode material, preparation method and application thereof, and lithium ion battery |
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| CN101288190A (en) * | 2005-09-30 | 2008-10-15 | 亚历山大·康斯坦迪诺维奇·菲利普夫 | Carbon-containing material for a lithium-ion battery and a lithium-ion battery |
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Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101288190A (en) * | 2005-09-30 | 2008-10-15 | 亚历山大·康斯坦迪诺维奇·菲利普夫 | Carbon-containing material for a lithium-ion battery and a lithium-ion battery |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105428655A (en) * | 2015-12-29 | 2016-03-23 | 湖州创亚动力电池材料有限公司 | Method for improving utilization rate of carbon negative electrode active substance |
| CN106654235A (en) * | 2017-02-08 | 2017-05-10 | 深圳市贝特瑞新能源材料股份有限公司 | Composite graphite material and preparation method thereof and lithium-ion battery comprising composite graphite material |
| CN106654235B (en) * | 2017-02-08 | 2020-01-24 | 深圳市贝特瑞新能源材料股份有限公司 | Composite graphite material, preparation method thereof and lithium ion battery containing composite graphite material |
| CN114068885A (en) * | 2020-07-30 | 2022-02-18 | 湖南中科星城石墨有限公司 | Graphite material with porous carbon layer and preparation method and application thereof |
| CN113571687A (en) * | 2021-07-23 | 2021-10-29 | 江南大学 | Preparation and application of zinc ion battery negative electrode material |
| CN114695833A (en) * | 2022-03-01 | 2022-07-01 | 北京化工大学 | Lithium dendrite inhibition device, system and method for lithium metal battery negative electrode material |
| CN116002678A (en) * | 2023-03-28 | 2023-04-25 | 宁波杉杉新材料科技有限公司 | Modified graphite negative electrode material, preparation method and application thereof, and lithium ion battery |
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Application publication date: 20120725 |