CN108807996A - A kind of preparation method and material of high magnification fast charge graphite cathode material - Google Patents
A kind of preparation method and material of high magnification fast charge graphite cathode material Download PDFInfo
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- CN108807996A CN108807996A CN201810939161.5A CN201810939161A CN108807996A CN 108807996 A CN108807996 A CN 108807996A CN 201810939161 A CN201810939161 A CN 201810939161A CN 108807996 A CN108807996 A CN 108807996A
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- fast charge
- high magnification
- cathode material
- graphite cathode
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- 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
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- 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
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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 discloses a kind of preparation methods of high magnification fast charge graphite cathode material, including obtaining artificial graphite by graphitization after crushing raw material, artificial graphite is subjected to mechanical fusion processing together with carbonaceous sources bonding agent later, charing, high magnification fast charge graphite cathode material is obtained, wherein raw material is one or more kinds of in petroleum coke or pitch coke or coal tar；Granularity D50 is 3-10um after raw material crushes.Compared with prior art, the present invention obtains artificial graphite after being directly graphitized to raw materials such as petroleum cokes, mechanical fusion is carried out after being mixed with bonding agent, later carbonization treatment, integrated artistic flow is simple, without carrying out coating modification to raw material, cost is greatly reduced, single little particle makes lithium ion access way shorter, and merges one layer of amorphous carbon of cladding on its surface, so that the isotropism of material improves, multiplying power height, the rapid charging performance of obtained graphite cathode material are very excellent.
Description
Technical field
The present invention relates to technical field of lithium ion battery negative, and in particular to a kind of high magnification fast charge graphite cathode material
The preparation method and material of material.
Background technology
Lithium ion battery has that operating voltage is high, energy density is big, service life is long, memory-less effect, self discharge are small
Feature becomes the preferred power supply of currently advanced electronic equipment.With people's life diversification and the continuous quickening of rhythm, to battery
Charging time requires shorter and shorter, and cathode graphite material is as lithium ion battery important component, the charge and discharge to battery
Characteristic is affected, and therefore, improves the charge characteristic of negative material while superior cycle performance being kept to be of great significance.
However, current high magnification material is substantially and is carbonized to be formed for second particle, but second particle carbonization presence needs coating modification, work
The shortcomings of skill is complicated, of high cost.
In view of this, it is necessory to develop a kind of carbonization of single particle, it is simple for process, there is excellent high magnification and fast charge
The preparation method and material of the high magnification fast charge graphite cathode material of energy.
Invention content
It is an object of the present invention to for the above-mentioned deficiency of the prior art, a kind of high magnification fast charge graphite cathode material is provided
The preparation method and material of material, with the carbonization of simple for process, single particle, with excellent high magnification and rapid charging performance, surface without
The advantages that burr, smooth surface.
Used technical solution is the present invention in order to achieve the above objectives：
A kind of preparation method of high magnification fast charge graphite cathode material, includes the following steps：By graphitization after raw material is crushed
Artificial graphite is obtained, artificial graphite is subjected to mechanical fusion processing together with carbonaceous sources bonding agent later, charing is to get to high power
Rate fast charge graphite cathode material.
Further, the raw material is one or more kinds of in petroleum coke or pitch coke or coal tar；Grain after raw material crushes
Degree D50 is 3-10um.
Further, the carbonaceous sources bonding agent is pitch.
Further, the graphitization temperature is 2000 DEG C -3000 DEG C.
Further, the mass percent proportioning of the artificial graphite and carbonaceous sources bonding agent is：Artificial graphite 96-
99%, carbonaceous sources bonding agent 1-4%.
Further, the charcoal turns to fusions material and carbonizes sintering processes 5-20h, charing temperature under inert gas protection
Degree is 900-1300 DEG C.
Further, the condition of the mechanical fusion is：Rotating speed is 100-500rpm, time 5-30min.
A kind of preparation-obtained high magnification fast charge graphite cathode of preparation method of above-mentioned high magnification fast charge graphite cathode material
Material, which is single graphite particle, and surface fusion has one layer of amorphous carbon structure.
Compared with prior art, beneficial effects of the present invention are：The present invention is directly graphitized the raw materials such as petroleum coke
Artificial graphite is obtained later, mechanical fusion is carried out after being mixed with bonding agent, bonding agent dosage is few, is only that and avoids single
Airborne dust disperses when grain, the fusion of short grained artificial graphite, after mechanical fusion so that single graphite particle surface is smooth, nothing
Burr, carbonization treatment later, integrated artistic flow is simple, without carrying out coating modification to raw material, greatly reduces cost, this material
Material is a schungite little particle, and little particle makes lithium ion access way shorter, and fixed in its surface fusion one layer of nothing of cladding
Shape carbon so that the isotropism of material improves, and multiplying power height, the rapid charging performance of obtained graphite cathode material are very excellent, to lithium
The newly developed of ion battery material is of great significance.
Description of the drawings：
Fig. 1 is the formation schematic diagram of the high magnification fast charge graphite cathode material of the present invention.
Above-mentioned is the general introduction of inventive technique scheme, below in conjunction with the drawings and specific embodiments, is done further to the present invention
Explanation.
Specific implementation mode：
In order to make the purpose of the present invention and technical solution and advantage be more clearly understood, make with reference to embodiments specifically
It is bright.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, it is not intended to limit the present invention.
Embodiment 1：A kind of preparation method of high magnification fast charge graphite cathode material provided in this embodiment, includes the following steps：
Petroleum coke raw material is crushed, granularity D50 is 3-10um after crushing, and artificial graphite, graphitization temperature are obtained by graphitization
It is 2200 DEG C, later carries out artificial graphite weight percent 97% and carbonaceous sources bonding agent pitch weight percent 3% together
The rotating speed of mechanical fusion processing, mechanical fusion is 300rpm, time 18min, later protects the material after fusion in inert gas
Shield is lower to carbonize sintering processes 18h, and carbonization temperature is 900 DEG C, and high magnification fast charge graphite cathode material is obtained through charing process.
A kind of preparation-obtained high magnification fast charge graphite cathode of preparation method of above-mentioned high magnification fast charge graphite cathode material
Material, which is single graphite particle, and surface fusion has one layer of amorphous carbon structure.
Embodiment 2：The preparation method of high magnification fast charge graphite cathode material provided in this embodiment a kind of and use the preparation
High magnification fast charge graphite cathode material, includes the following steps obtained from method：Pitch coke raw material is crushed, grain after crushing
Degree D50 is 3-10um, obtains artificial graphite by graphitization, graphitization temperature is 2000 DEG C, later by artificial graphite weight hundred
Score 99% carries out mechanical fusion processing together with carbonaceous sources bonding agent pitch weight percent 1%, and the rotating speed of mechanical fusion is
200rpm, time 25min, carbonize sintering processes 20h under inert gas protection by the material after fusion later, and carbonization temperature is
1200 DEG C, high magnification fast charge graphite cathode material is obtained through charing process.
Embodiment 3：The preparation method of high magnification fast charge graphite cathode material provided in this embodiment a kind of and use the preparation
High magnification fast charge graphite cathode material, includes the following steps obtained from method：Coal tar raw material is crushed, granularity after crushing
D50 is 3-10um, obtains artificial graphite by graphitization, graphitization temperature is 2400 DEG C, later by artificial graphite weight percent
Number 98% carries out mechanical fusion processing together with carbonaceous sources bonding agent pitch weight percent 2%, and the rotating speed of mechanical fusion is
500rpm, time 5min, carbonize sintering processes 15h under inert gas protection by the material after fusion later, and carbonization temperature is
1000 DEG C, high magnification fast charge graphite cathode material is obtained through charing process.
Embodiment 4：The preparation method of high magnification fast charge graphite cathode material provided in this embodiment a kind of and use the preparation
High magnification fast charge graphite cathode material, includes the following steps obtained from method：Petroleum coke and coal tar raw material are crushed, powder
Granularity D50 is 3-10um after broken, obtains artificial graphite by graphitization, graphitization temperature is 3000 DEG C, later by artificial graphite
Weight percent 96% carries out mechanical fusion processing together with carbonaceous sources bonding agent pitch weight percent 4%, mechanical fusion
Rotating speed is 100rpm, time 30min, and the material after fusion is carbonized sintering processes 5h under inert gas protection later, is carbonized
Temperature is 1300 DEG C, and high magnification fast charge graphite cathode material is obtained through charing process.
According to the disclosure and teachings of the above specification, those skilled in the art in the invention can also be to above-mentioned embodiment party
Formula is changed and is changed.Therefore, the invention is not limited in specific implementation modes disclosed and described above, to the present invention's
Some modifications and changes should also be as falling into the scope of the claims of the present invention.In addition, although being used in this specification
Some specific terms, these terms are merely for convenience of description, does not limit the present invention in any way.
Claims (8)
1. a kind of preparation method of high magnification fast charge graphite cathode material, which is characterized in that include the following steps：It is passed through after raw material is crushed
It crosses graphitization and obtains artificial graphite, artificial graphite is subjected to mechanical fusion processing together with carbonaceous sources bonding agent later, carbonize, i.e.,
Obtain high magnification fast charge graphite cathode material.
2. the preparation method of high magnification fast charge graphite cathode material as described in claim 1, which is characterized in that the raw material is stone
It is one or more kinds of in oil coke or pitch coke or coal tar；Granularity D50 is 3-10um after raw material crushes.
3. the preparation method of high magnification fast charge graphite cathode material as described in claim 1, which is characterized in that the carbonaceous sources are viscous
It is pitch to connect agent.
4. the preparation method of high magnification fast charge graphite cathode material as described in claim 1, which is characterized in that the graphitization temperature
Degree is 2000 DEG C -3000 DEG C.
5. the preparation method of high magnification fast charge graphite cathode material as described in claim 1, which is characterized in that the artificial graphite
It is matched with the mass percent of carbonaceous sources bonding agent and is：Artificial graphite 96-99%, carbonaceous sources bonding agent 1-4%.
6. the preparation method of high magnification fast charge graphite cathode material as described in claim 1, which is characterized in that the charcoal, which turns to, to be melted
It closes material and carbonizes sintering processes 5-20h under inert gas protection, carbonization temperature is 900-1300 DEG C.
7. the preparation method of high magnification fast charge graphite cathode material as described in claim 1, which is characterized in that the mechanical fusion
Condition be：Rotating speed is 100-500rpm, time 5-30min.
8. a kind of preparation-obtained high power of preparation method of high magnification fast charge graphite cathode material as described in claim 1-7 is any
Rate fast charge graphite cathode material, which is characterized in that the high magnification fast charge graphite cathode material is single graphite particle, and surface is melted
Conjunction has one layer of amorphous carbon structure.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112599772A (en) * | 2020-12-14 | 2021-04-02 | 河南环宇惠能能源有限公司 | Method for recycling negative electrode material of lithium ion power battery |
| CN113488635A (en) * | 2021-05-24 | 2021-10-08 | 长沙矿冶研究院有限责任公司 | Isotropic heat treatment negative electrode material coating method and preparation method of long-cycle negative electrode material |
| WO2021217586A1 (en) * | 2020-04-30 | 2021-11-04 | 宁德时代新能源科技股份有限公司 | Secondary battery and method for preparing same, and device including secondary battery |
| CN113921784A (en) * | 2021-09-29 | 2022-01-11 | 湖北亿纬动力有限公司 | Negative electrode material and preparation method and application thereof |
| CN115321531A (en) * | 2022-08-30 | 2022-11-11 | 广东凯金新能源科技股份有限公司 | Preparation method of graphite-based negative electrode material, graphite-based negative electrode material and application thereof |
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| CN106981632A (en) * | 2017-03-24 | 2017-07-25 | 上海杉杉科技有限公司 | High magnification fills the preparation method of graphite soon |
| CN107579252A (en) * | 2017-09-07 | 2018-01-12 | 福建杉杉科技有限公司 | A kind of high power charcoal bag covers the preparation method of artificial plumbago negative pole material |
| CN108199043A (en) * | 2018-01-15 | 2018-06-22 | 安徽科达洁能新材料有限公司 | A kind of preparation method of high multiplying power lithium ion battery artificial plumbago negative pole material |
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| CN106981632A (en) * | 2017-03-24 | 2017-07-25 | 上海杉杉科技有限公司 | High magnification fills the preparation method of graphite soon |
| CN107579252A (en) * | 2017-09-07 | 2018-01-12 | 福建杉杉科技有限公司 | A kind of high power charcoal bag covers the preparation method of artificial plumbago negative pole material |
| CN108199043A (en) * | 2018-01-15 | 2018-06-22 | 安徽科达洁能新材料有限公司 | A kind of preparation method of high multiplying power lithium ion battery artificial plumbago negative pole material |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021217586A1 (en) * | 2020-04-30 | 2021-11-04 | 宁德时代新能源科技股份有限公司 | Secondary battery and method for preparing same, and device including secondary battery |
| CN113875047A (en) * | 2020-04-30 | 2021-12-31 | 宁德时代新能源科技股份有限公司 | Secondary battery, method of manufacturing the same, and device including the same |
| CN113875047B (en) * | 2020-04-30 | 2023-11-21 | 宁德时代新能源科技股份有限公司 | Secondary battery, method for manufacturing the same, and device comprising the same |
| US11901546B2 (en) | 2020-04-30 | 2024-02-13 | Contemporary Amperex Technology Co., Limited | Secondary battery, process for preparing the same and apparatus containing the secondary battery |
| CN112599772A (en) * | 2020-12-14 | 2021-04-02 | 河南环宇惠能能源有限公司 | Method for recycling negative electrode material of lithium ion power battery |
| CN113488635A (en) * | 2021-05-24 | 2021-10-08 | 长沙矿冶研究院有限责任公司 | Isotropic heat treatment negative electrode material coating method and preparation method of long-cycle negative electrode material |
| CN113921784A (en) * | 2021-09-29 | 2022-01-11 | 湖北亿纬动力有限公司 | Negative electrode material and preparation method and application thereof |
| CN115321531A (en) * | 2022-08-30 | 2022-11-11 | 广东凯金新能源科技股份有限公司 | Preparation method of graphite-based negative electrode material, graphite-based negative electrode material and application thereof |
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Application publication date: 20181113 |