CN106169582B - A kind of natural needle coke composite graphite negative electrode material production method - Google Patents
A kind of natural needle coke composite graphite negative electrode material production method Download PDFInfo
- Publication number
- CN106169582B CN106169582B CN201610707852.3A CN201610707852A CN106169582B CN 106169582 B CN106169582 B CN 106169582B CN 201610707852 A CN201610707852 A CN 201610707852A CN 106169582 B CN106169582 B CN 106169582B
- Authority
- CN
- China
- Prior art keywords
- raw material
- needle coke
- negative electrode
- added
- needle
- 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.)
- Active
Links
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
- H01M4/58—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
- H01M4/583—Carbonaceous material, e.g. graphite-intercalation compounds or CFx
-
- 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
- H01M4/62—Selection of inactive substances as ingredients for active masses, e.g. binders, fillers
- H01M4/624—Electric conductive fillers
- H01M4/625—Carbon or graphite
-
- 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 present invention provides a kind of natural needle coke composite graphite negative electrode material production method, using needle coke as raw material A, using natural graphite as raw material B, using pitch micro mist as raw material C, using graphene conductive agent as raw material D, using carbon nanotube as raw material E, above-mentioned raw materials pass through a series of mechanical processings, surface is modified, the methods of Chemical deep modification and doping, one kind is prepared to have extended cycle life, charge-discharge velocity is fast, high temperature performance is good, processing performance is good, the negative material of suitable power battery, its simple production process, production efficiency is high, it is at low cost, process safety, it can be used for industrialized production.The advantage of the invention is that：Graphene conductive agent and carbon nanotube mixing material is added, improves the electric conductivity of material；It is graphitized under coarse powder state, it is possible to reduce particle surface oxidation activity point, degree of oxidation and materials loss rate improve the capacity and yield of material.
Description
Technical field
The present invention relates to a kind of natural needle coke composite graphite negative electrode material production methods, belong to lithium ion battery negative material
Technical field.
Background technology
The important sources as automobile power of lithium ion battery have and save the energy, the effect of environmental protection.And lithium from
The negative material of sub- battery is the main contents of current scientific research personnel's research, and battery how preferably to be made to play maximum efficiency,
Energy-saving and emission-reduction are optimized the environment, and the development of social economy is of crucial importance.Currently, lithium in research range from
Sub- cell negative electrode material is still based on graphite etc., in daily life, using graphite as lithium ion battery negative material
Battery operation principle be that for battery in charging process, the lithium ion deviate from anode is embedded in rapidly cathode, when embedded lithium from
Son is more, and when embedded faster, the capacity of charging is also higher, and discharge capacity is bigger, and charge-discharge velocity is faster.Currently,
The lithium ion battery negative material of commercialization is mostly single Carbon Materials, but negative material of the Carbon Materials as lithium ion itself
There is also certain defect, Carbon anode current potential is susceptible to precipitation Li dendrite when close with the current potential of lithium metal, to
Cause short circuit, forms the security risk of lithium ion battery.The performance of lithium ion battery negative material is also what power battery developed
One of bottleneck can constantly improve research and development novel cathode material for lithium ion battery, be the important process for developing lithium electric power industry.
China's lithium-ion-power cell development starts from twentieth century, starts late.But since 2000, with China
More than 10 hundred million funds are put into for supporting development electric vehicle and associated batteries technology, and the reality of " 863 " electric vehicle key special subjects
Apply, strong state-run, private enterprise has carried out developmental research to lithium-ion-power cell, the performance of lithium ion battery of production with
External product is suitable, and some aspects are even better than external product, and export abroad amount constantly rises.China's lithium ion power electricity at present
Pond includes mainly power tool battery, battery of electric bicycle, extraordinary Vehicular battery and battery for electric automobile etc., and future also has
May be the ideal source for replacing existing submarine power battery, various lithium-ion-power cells are in the industrialization starting stage.
In general, select a kind of good negative material that should follow following principle：, discharge and recharge reaction invertibity higher than energy
Good compatibility good, with electrolyte and binder, high temperature performance is good, and charge-discharge velocity is fast.The present invention is directed to different carbonaceous materials
The performance of material carries out Improvement, reaches and adapts to the performance requirement that power battery uses.
Invention content
It is single artificial to solve the object of the present invention is to provide a kind of natural needle coke composite graphite negative electrode material production method
The low problem low with the capacity caused by degree of oxidation height in heat treatment process of graphite degree of graphitization, overcome natural graphite Cycle Difference,
The defects of high temperature performance and poor flexibility (adaptability) of operation, while improving the electric conductivity of material, high rate performance etc..
Technical scheme of the present invention：A kind of natural needle coke composite graphite negative electrode material production method, specific production technology are：
（a）Using needle coke as raw material A；
（b）Using natural graphite as raw material B；
（c）Using pitch micro mist as raw material C, grain size D50≤5 μm；
（d）Using graphene conductive agent as raw material D；
（e）Using carbon nanotube as raw material E；
（f）By raw material A be ground into grain size be 0.5-3mm particle, be graphitized at 2800 ~ 3200 DEG C, then into
Row is finely divided, and grinding particle size D50 is 8 ~ 12 μm；
（g）It will（f）The raw material A fine powder and raw material B that step obtains, by weight A/B=100/（30~100）Ratio carry out
Uniformly mixing, fusion；
（h）It will（g）The material and raw material C that step obtains, by weight（A+B）The ratio of/C=100/2 ~ 10 is mixed,
It is carbonized at 1200 ~ 1500 DEG C after mixing；
（i）By raw material D and raw material E by weight D/E=100/（50~200）Ratio carry out air-flow mixing；
（j）It will（h）Material that step obtains and（i）The material that step obtains, by weight（A+B+C）/（D+E）=100/
（1~3）Ratio uniformly mixed, sieve, finally obtain product.
Preferably, the raw material A is that petroleum needle coke or coal-based needle are burnt.
Preferably, the raw material B is asphalt or coal tar pitch.
Preferably, step（g）、（h）、（j）Described in mixing use double-cone mixer.
Preferably, step（f）Described in crush use airslide disintegrating mill.
Beneficial effects of the present invention：
1, needle coke is the excellent raw material for developing power graphite cathode material, the present invention use high-quality needle coke for
Primary raw material, using needle coke performance advantage and combine the high power capacity and the good advantage of isotropism of natural graphite, compound system
Standby negative material, is that the application performances such as product pattern, processing performance and capacity, efficiency, cycle are significantly improved；
2, it is processed into coarse powder since the present invention carries out mechanical crushing to needle coke, is graphitized under coarse powder state, it can
To reduce the surface oxidation degree of material, active site is reduced, and effectively reduce graphited material loss；After fine powder, material
Expect that fine grained surface is not oxidized, effective charge-discharge velocity can be improved, and it is solid tight to contribute to pitch-coating layer to coat
It is close, it is not easily to fall off；
3, needle coke is graphitized under coarse powder state, can not only reduce material oxidation degree, continues place after bonding
The specific surface area that material but will be reduced after reason improves the processing performance of material, the i.e. small, pole piece compaction density of pole piece compacting rebound
It is high；
4, a certain proportion of natural graphite is added using needle coke and carries out surface modification, improved the appearance of needle coke, improve
Tap density reduces specific surface area, improves the isotropism of needle coke, to improve charge-discharge velocity, while helping to make material
Material surface is evenly coated, and forms firm pitch-coating layer；
5, asphalt carbon cladding is carried out after being graphitized, and is formed one layer of fine and close soft charcoal layer in graphite surface, is helped to improve
A small amount of graphene conductive agent and carbon nanotube is added in surface conductance performance, can increase substantially the electric conductivity of material, improves
Charge-discharge velocity；
6, in conclusion the present invention is by using needle coke and natural graphite, by a series of mechanical processings, surface changes
Property, Chemical deep is modified, and the methods of doping, and preparing one kind has extended cycle life, and charge-discharge velocity is fast, and high temperature performance is good,
Processing performance is good, the negative material of suitable power battery, simple production process, and production efficiency is high, at low cost, processed
Cheng Anquan can be used for industrialized production.
Specific implementation mode：
Embodiment 1
Needle-shape coke raw material A 200kg are weighed, the particle that grain size is about 0.5 ~ 3mm is ground into, graphite is carried out at 3000 DEG C
Change, then carry out it is finely divided, grinding particle size D50 be 10 μm.
Weigh graphitization after needle-shape coke raw material A 50kg, be added natural graphite starting material B 15kg, mixed, then into
Row fusion shaping.
Weigh the raw material after fusion（A+B）1.5 kg of pitch powder material C are added in 50kg, are carbonized at 1300 DEG C.
It weighs graphene conductive agent raw material D 2kg and carbon nanometer tube material E 2kg is added, carry out air-flow mixing.
Weigh the raw material after charing（A+B+C）Mixture is added in 20kg（D+E）0.2kg is uniformly mixed, and sieving removes
It is miscellaneous, obtain product.
After product of the present invention is the series of process such as to be beaten to, be coated with, LIR2430 type button cells are then made, are passed through
Test, discharge capacity is 348.6mAh/g to gained composite graphite negative electrode material for the first time, and discharging efficiency 93.0% is recycled through 50 times
Capacity retention ratio is 98.4% afterwards, and capacity retention ratio is 96.5% after 100 cycles, as shown in table 1.
Embodiment 2
Needle-shape coke raw material A 200kg are weighed, the particle that grain size is about 0.5 ~ 3mm is ground into, graphite is carried out at 3000 DEG C
Change, then carry out it is finely divided, grinding particle size D50 be 8 μm.
Weigh graphitization after needle-shape coke raw material A 50kg, be added natural graphite starting material B 20kg, mixed, then into
Row fusion shaping.
Weigh the raw material after fusion（A+B）2.5 kg of pitch powder material C are added in 50kg, are carbonized at 1300 DEG C.
It weighs graphene conductive agent raw material D 2kg and carbon nanometer tube material E 1kg is added, carry out air-flow mixing.
Weigh the raw material after charing（A+B+C）Mixture is added in 20kg（D+E）0.4kg is uniformly mixed, and sieving removes
It is miscellaneous, obtain product.
After product of the present invention is the series of process such as to be beaten to, be coated with, LIR2430 type button cells are then made, are passed through
Test, discharge capacity is 349.2mAh/g to gained composite graphite negative electrode material for the first time, and discharging efficiency 93.2% is recycled through 50 times
Capacity retention ratio is 98.8% afterwards, and capacity retention ratio is 96.3% after 100 cycles, as shown in table 1.
Embodiment 3
Needle-shape coke raw material A 200kg are weighed, the particle that grain size is about 0.5 ~ 3mm is ground into, graphite is carried out at 2800 DEG C
Change, then carry out it is finely divided, grinding particle size D50 be 11 μm.
Weigh graphitization after needle-shape coke raw material A 50kg, be added natural graphite starting material B 25kg, mixed, then into
Row fusion shaping.
Weigh the raw material after fusion（A+B）3.0 kg of pitch powder material C are added in 50kg, are carbonized at 1200 DEG C.
It weighs graphene conductive agent raw material D 2kg and carbon nanometer tube material E 1.2kg is added, carry out air-flow mixing.
Weigh the raw material after charing（A+B+C）Mixture is added in 20kg（D+E）0.6kg is uniformly mixed, and sieving removes
It is miscellaneous, obtain product.
After product of the present invention is the series of process such as to be beaten to, be coated with, LIR2430 type button cells are then made, are passed through
Test, discharge capacity is 347.3mAh/g to gained composite graphite negative electrode material for the first time, and discharging efficiency 92.9% is recycled through 50 times
Capacity retention ratio is 97.5% afterwards, and capacity retention ratio is 96.4% after 100 cycles, as shown in table 1.
Embodiment 4
Needle-shape coke raw material A 200kg are weighed, the particle that grain size is about 0.5 ~ 3mm is ground into, graphite is carried out at 2900 DEG C
Change, then carry out it is finely divided, grinding particle size D50 be 12 μm.
Weigh graphitization after needle-shape coke raw material A 50kg, be added natural graphite starting material B 25kg, mixed, then into
Row fusion shaping.
Weigh the raw material after fusion（A+B）2.0 kg of pitch powder material C are added in 50kg, are carbonized at 1400 DEG C.
It weighs graphene conductive agent raw material D 2kg and carbon nanometer tube material E 1.6kg is added, carry out air-flow mixing.
Weigh the raw material after charing（A+B+C）Mixture is added in 20kg（D+E）0.4kg is uniformly mixed, and sieving removes
It is miscellaneous, obtain product.
After product of the present invention is the series of process such as to be beaten to, be coated with, LIR2430 type button cells are then made, are passed through
Test, discharge capacity is 350.0mAh/g to gained composite graphite negative electrode material for the first time, and discharging efficiency 93.5% is recycled through 50 times
Capacity retention ratio is 98.7% afterwards, and capacity retention ratio is 96.6% after 100 cycles, as shown in table 1.
Embodiment 5
Needle-shape coke raw material A 200kg are weighed, the particle that grain size is about 0.5 ~ 3mm is ground into, graphite is carried out at 3100 DEG C
Change, then carry out it is finely divided, grinding particle size D50 be 10 μm.
Weigh graphitization after needle-shape coke raw material A 50kg, be added natural graphite starting material B 30kg, mixed, then into
Row fusion shaping.
Weigh the raw material after fusion（A+B）4.0 kg of pitch powder material C are added in 50kg, are carbonized at 1500 DEG C.
It weighs graphene conductive agent raw material D 2kg and carbon nanometer tube material E 2.4kg is added, carry out air-flow mixing.
Weigh the raw material after charing（A+B+C）Mixture is added in 20kg（D+E）0.4kg is uniformly mixed, and sieving removes
It is miscellaneous, obtain product.
After product of the present invention is the series of process such as to be beaten to, be coated with, LIR2430 type button cells are then made, are passed through
Test, discharge capacity is 348.6mAh/g to gained composite graphite negative electrode material for the first time, and discharging efficiency 92.5% is recycled through 50 times
Capacity retention ratio is 98.2% afterwards, and capacity retention ratio is 96.3% after 100 cycles, as shown in table 1.
Embodiment 6
Needle-shape coke raw material A 200kg are weighed, the particle that grain size is about 0.5 ~ 3mm is ground into, graphite is carried out at 3200 DEG C
Change, then carry out it is finely divided, grinding particle size D50 be 8 μm.
Weigh graphitization after needle-shape coke raw material A 50kg, be added natural graphite starting material B 40kg, mixed, then into
Row fusion shaping.
Weigh the raw material after fusion（A+B）1.5 kg of pitch powder material C are added in 50kg, are carbonized at 1300 DEG C.
It weighs graphene conductive agent raw material D 2kg and carbon nanometer tube material E 3kg is added, carry out air-flow mixing.
Weigh the raw material after charing（A+B+C）Mixture is added in 20kg（D+E）0.2kg is uniformly mixed, and sieving removes
It is miscellaneous, obtain product.
After product of the present invention is the series of process such as to be beaten to, be coated with, LIR2430 type button cells are then made, are passed through
Test, discharge capacity is 352.4mAh/g to gained composite graphite negative electrode material for the first time, and discharging efficiency 93.4% is recycled through 50 times
Capacity retention ratio is 97.3% afterwards, and capacity retention ratio is 95.6% after 100 cycles, as shown in table 1.
Embodiment 7
Needle-shape coke raw material A 200kg are weighed, the particle that grain size is about 0.5 ~ 3mm is ground into, graphite is carried out at 3100 DEG C
Change, then carry out it is finely divided, grinding particle size D50 be 11 μm.
Weigh graphitization after needle-shape coke raw material A 50kg, be added natural graphite starting material B 50kg, mixed, then into
Row fusion shaping.
Weigh the raw material after fusion（A+B）2.0 kg of pitch powder material C are added in 50kg, are carbonized at 1400 DEG C.
It weighs graphene conductive agent raw material D 2kg and carbon nanometer tube material E 4kg is added, carry out air-flow mixing.
Weigh the raw material after charing（A+B+C）Mixture is added in 20kg（D+E）0.4kg is uniformly mixed, and sieving removes
It is miscellaneous, obtain product.
After product of the present invention is the series of process such as to be beaten to, be coated with, LIR2430 type button cells are then made, are passed through
Test, discharge capacity is 358.8mAh/g to gained composite graphite negative electrode material for the first time, and discharging efficiency 94.2% is recycled through 50 times
Capacity retention ratio is 98.4% afterwards, and capacity retention ratio is 96.7% after 100 cycles, as shown in table 1.
Embodiment 8
Needle-shape coke raw material A 200kg are weighed, the particle that grain size is about 0.5 ~ 3mm is ground into, graphite is carried out at 3000 DEG C
Change, then carry out it is finely divided, grinding particle size D50 be 10 μm.
Weigh graphitization after needle-shape coke raw material A 50kg, be added natural graphite starting material B 25kg, mixed, then into
Row fusion shaping.
Weigh the raw material after fusion（A+B）2.5 kg of pitch powder material C are added in 50kg, are carbonized at 1300 DEG C.
It weighs graphene conductive agent raw material D 2kg and carbon nanometer tube material E 3kg is added, carry out air-flow mixing.
Weigh the raw material after charing（A+B+C）Mixture is added in 20kg（D+E）0.2kg is uniformly mixed, and sieving removes
It is miscellaneous, obtain product.
After product of the present invention is the series of process such as to be beaten to, be coated with, LIR2430 type button cells are then made, are passed through
Test, discharge capacity is 354.7mAh/g to gained composite graphite negative electrode material for the first time, and discharging efficiency 93.7% is recycled through 50 times
Capacity retention ratio is 98.6% afterwards, and capacity retention ratio is 96.8% after 100 cycles, as shown in table 1.
Embodiment 9
Needle-shape coke raw material A 200kg are weighed, the particle that grain size is about 0.5 ~ 3mm is ground into, graphite is carried out at 3100 DEG C
Change, then carry out it is finely divided, grinding particle size D50 be 12 μm.
Weigh graphitization after needle-shape coke raw material A 50kg, be added natural graphite starting material B 15kg, mixed, then into
Row fusion shaping.
Weigh the raw material after fusion（A+B）1.5 kg of pitch powder material C are added in 50kg, are carbonized at 1400 DEG C.
It weighs graphene conductive agent raw material D 2kg and carbon nanometer tube material E 2kg is added, carry out air-flow mixing.
Weigh the raw material after charing（A+B+C）Mixture is added in 20kg（D+E）0.4kg is uniformly mixed, and sieving removes
It is miscellaneous, obtain product.
After product of the present invention is the series of process such as to be beaten to, be coated with, LIR2430 type button cells are then made, are passed through
Test, discharge capacity is 349.6mAh/g to gained composite graphite negative electrode material for the first time, and discharging efficiency 94.5% is recycled through 50 times
Capacity retention ratio is 98.4% afterwards, and capacity retention ratio is 96.6% after 100 cycles, as shown in table 1.
Embodiment 10
Needle-shape coke raw material A 200kg are weighed, the particle that grain size is about 0.5 ~ 3mm is ground into, graphite is carried out at 3000 DEG C
Change, then carry out it is finely divided, grinding particle size D50 be 10 μm.
Weigh graphitization after needle-shape coke raw material A 50kg, be added natural graphite starting material B 15kg, mixed, then into
Row fusion shaping.
Weigh the raw material after fusion（A+B）1.5 kg of pitch powder material C are added in 50kg, are carbonized at 1300 DEG C.
It weighs graphene conductive agent raw material D 2kg and carbon nanometer tube material E 3.6kg is added, carry out air-flow mixing.
Weigh the raw material after charing（A+B+C）Mixture is added in 20kg（D+E）0.4kg is uniformly mixed, and sieving removes
It is miscellaneous, obtain product.
After product of the present invention is the series of process such as to be beaten to, be coated with, LIR2430 type button cells are then made, are passed through
Test, discharge capacity is 349.4mAh/g to gained composite graphite negative electrode material for the first time, and discharging efficiency 94.4% is recycled through 50 times
Capacity retention ratio is 97.6% afterwards, and capacity retention ratio is 95.7% after 100 cycles, as shown in table 1.
。
Claims (2)
1. a kind of natural needle coke composite graphite negative electrode material production method, specific production technology are：
（a）Using needle coke as raw material A；
（b）Using natural graphite as raw material B；
（c）Using pitch micro mist as raw material C, maximum particle diameter≤3 μm；
（d）Using graphene conductive agent as raw material D；
（e）Using carbon nanotube as raw material E；
（f）Raw material A is ground into the particle that grain size is 0.5-3mm, is graphitized at 2800 ~ 3200 DEG C, is then carried out thin
It crushes, grinding particle size D50 is 8 ~ 12 μm；
（g）It will（f）The raw material A fine powder and raw material B that step obtains, by weight A/B=100/（30~100）Ratio carry out it is uniform
Mixing, fusion；
（h）It will（g）The material and raw material C that step obtains, by weight（A+B）The ratio of/C=100/2 ~ 10 is mixed, mixing
It is carbonized at 1200 ~ 1500 DEG C afterwards；
（i）By raw material D and raw material E by weight D/E=100/（50~200）Ratio carry out air-flow mixing；
（j）It will（h）Material that step obtains and（i）The material that step obtains, by weight（A+B+C）/（D+E）=100/（1~3）
Ratio uniformly mixed, sieve, finally obtain product.
2. a kind of natural needle coke composite graphite negative electrode material production method as described in claim 1, it is characterised in that：The original
Expect that A is that petroleum needle coke or coal-based needle are burnt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610707852.3A CN106169582B (en) | 2016-08-23 | 2016-08-23 | A kind of natural needle coke composite graphite negative electrode material production method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610707852.3A CN106169582B (en) | 2016-08-23 | 2016-08-23 | A kind of natural needle coke composite graphite negative electrode material production method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106169582A CN106169582A (en) | 2016-11-30 |
| CN106169582B true CN106169582B (en) | 2018-08-14 |
Family
ID=57377138
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610707852.3A Active CN106169582B (en) | 2016-08-23 | 2016-08-23 | A kind of natural needle coke composite graphite negative electrode material production method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106169582B (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106876709B (en) * | 2017-02-22 | 2019-11-12 | 江西紫宸科技有限公司 | A kind of preparation method of high magnification carbon negative pole material |
| CN107293697B (en) * | 2017-07-26 | 2019-07-12 | 大连宏光锂业股份有限公司 | A kind of power-type lithium ion battery negative electrode material production method |
| CN109860524A (en) * | 2017-11-30 | 2019-06-07 | 宝武炭材料科技有限公司 | A kind of method of solid asphalt low temperature cladding preparation negative electrode material |
| CN108383116A (en) * | 2018-02-11 | 2018-08-10 | 珠海光宇电池有限公司 | Artificial plumbago negative pole material and preparation method thereof and negative electrode of lithium ion battery |
| CN113422025B (en) * | 2021-06-25 | 2023-02-03 | 洛阳月星新能源科技有限公司 | Natural graphite composite material and preparation method thereof |
| CN113912046A (en) * | 2021-09-30 | 2022-01-11 | 赣州市康达新能源材料有限公司 | Preparation method of artificial graphene super conductive agent |
| CN114824233A (en) * | 2022-05-31 | 2022-07-29 | 深圳市翔丰华科技股份有限公司 | Preparation method of high-energy-density quick-charging graphite negative electrode material of lithium battery |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3540478B2 (en) * | 1995-11-24 | 2004-07-07 | 鹿島石油株式会社 | Anode material for lithium ion secondary battery |
| CN104140093B (en) * | 2013-05-10 | 2018-10-19 | 上海杉杉科技有限公司 | Ion secondary battery cathode material lithium and preparation method thereof |
| CN103979527B (en) * | 2014-05-27 | 2015-11-25 | 大连宏光锂业股份有限公司 | A kind of production method of mesophase spherule composite graphite negative electrode material |
| CN105680022B (en) * | 2016-03-29 | 2018-01-16 | 大连宏光锂业股份有限公司 | A kind of natural oil coke composite graphite negative electrode material production method |
-
2016
- 2016-08-23 CN CN201610707852.3A patent/CN106169582B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN106169582A (en) | 2016-11-30 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106169582B (en) | A kind of natural needle coke composite graphite negative electrode material production method | |
| CN109830669B (en) | Preparation method of high-rate artificial graphite negative electrode material | |
| CN105428615B (en) | A kind of modified artificial graphite cathode material production method | |
| CN103708437B (en) | Soft carbon negative material of lithium ion battery, preparation method of soft carbon negative material and lithium ion battery | |
| CN102593434B (en) | Composite graphite particles for lithium secondary battery and preparation method thereof | |
| CN103214245B (en) | Carbon/carbon composite microsphere material, production method and lithium ion battery | |
| WO2016169149A1 (en) | Recycling method for graphite fine powder to act as lithium ion battery negative electrode material | |
| CN109921018A (en) | The preparation method of sodium-ion battery high capacity biomass hard charcoal negative electrode material | |
| CN107369823A (en) | A kind of lithium ion battery artificial composite cathode material of silicon/carbon/graphite and preparation method thereof | |
| CN104218214B (en) | A kind of lithium ion battery negative material and preparation method thereof | |
| CN102195036B (en) | Surface modified graphitized interphase carbon micro-powder and preparation method thereof | |
| CN103165869B (en) | Modification mesophase spherule negative material, lithium rechargeable battery and preparation method and application | |
| CN102569755B (en) | Graphite carbon negative electrode material for lithium ion battery, and preparation method thereof | |
| CN101908627B (en) | Cathode material of lithium ion secondary battery and preparation method thereof | |
| CN111370654B (en) | Composite graphite negative electrode material, lithium ion battery and preparation method and application thereof | |
| CN112582592B (en) | High-compaction and fast-filling artificial graphite material and preparation method thereof | |
| CN106602067A (en) | Graphite-based composite material and preparation method thereof and lithium ion battery comprising the composite material | |
| CN102299330A (en) | Active carbon-nano silicon composite powder, synthetic method thereof and lithium ion battery prepared therefrom | |
| CN105789627A (en) | Preparation method of high-performance graphite negative electrode material for lithium ion battery | |
| CN110203923A (en) | A kind of lithium ion battery negative material and preparation method thereof | |
| CN109524629B (en) | Preparation method of spherical silicon-carbon negative electrode material for lithium ion battery | |
| CN110550635A (en) | Preparation method of novel carbon-coated silica negative electrode material | |
| CN110963489A (en) | Carbon negative electrode material, preparation method thereof and lithium ion battery | |
| CN110429272B (en) | Silicon-carbon composite negative electrode material with pitaya-like structure and preparation method thereof | |
| CN110970599B (en) | Graphene-based composite negative electrode material, preparation method thereof and lithium ion battery |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 116450 Haitang street, Huayuankou Economic Zone, Dalian, Liaoning Patentee after: Dalian Hongguang Lithium Industry Co.,Ltd. Address before: 116450 Haitang street, Huayuankou Economic Zone, Dalian, Liaoning Patentee before: DALIAN HONGGUANG LITHIUM INDUSTRY CO.,LTD. |