CN103647079B - The preparation method of Modified by Carboxymethyl Cellulose graphite - Google Patents
The preparation method of Modified by Carboxymethyl Cellulose graphite Download PDFInfo
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- CN103647079B CN103647079B CN201310568608.XA CN201310568608A CN103647079B CN 103647079 B CN103647079 B CN 103647079B CN 201310568608 A CN201310568608 A CN 201310568608A CN 103647079 B CN103647079 B CN 103647079B
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- graphite
- carboxymethyl cellulose
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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
- H01M4/587—Carbonaceous material, e.g. graphite-intercalation compounds or CFx for inserting or intercalating light metals
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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
- H01M4/62—Selection of inactive substances as ingredients for active masses, e.g. binders, fillers
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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 kind of preparation method of Modified by Carboxymethyl Cellulose graphite, belong to chemical cell preparation field.In method provided by the invention, carboxymethyl cellulose and native graphite are mixed in proportion, then by dry, charing, obtain described Modified by Carboxymethyl Cellulose graphite; Method provided by the invention, carboxymethyl cellulose cracking charcoal has good coating function to native graphite, and can effectively stop graphite that stratiform peeling phenomenon occurs in charge and discharge process, thus the effective cyclical stability improving carbon composite, does is obtained modified graphite reversible capacity after circulation 50 times 310.9? mAh.g-1, higher than native graphite by 50? mAh.g-1, and maintain 97.1% of reversible capacity first.
Description
Technical field
The invention belongs to chemical cell preparation field, particularly relate to a kind of preparation method of Modified by Carboxymethyl Cellulose graphite.
Background technology
In recent years, along with oil, gas extraction with a large amount of to use and the development of automobile industry, the non-renewable of the resources such as oil is paid close attention to day by day widely.People pay attention to increasingly to problems such as urban air-quality and the crises of earth petroleum resources, and protection of the environment, the cry of energy savings is increasingly surging, impels people to pay much attention to the development and utilization of new forms of energy.Lithium ion battery is owing to having long cycle life and high energy density and being considered to hybrid-electric car and the very promising new forms of energy of portable electric appts.Graphite as current business-like lithium ion battery negative material, low price, Heat stability is good, environmental friendliness; But because the intercalation potential of graphite is lower, easily cause the decomposition of electrolyte and the precipitation of dendrite lithium, cause a series of safety problem.
Therefore development of new carbon-based negative electrode material has very important meaning.
Summary of the invention
A preparation method for Modified by Carboxymethyl Cellulose graphite, is characterized in that comprising the following steps:
(1), after carboxymethyl cellulose and native graphite being mixed in proportion, be dissolved in deionized water, obtain solution A;
(2) solution A is carried out adding thermal agitation, until the mixture A of solution transition gel;
(3) by mixture A 105-120 DEG C of oven dry, obtain mixture B;
(4) mixture B is carbonized process 4 ~ 6 hours at 700 ~ 900 DEG C, carrying out after sintering being crushed to particle diameter is 200 ~ 300 orders, obtains described Modified by Carboxymethyl Cellulose graphite;
Wherein, the charing in described step (4) is treated to be carried out under nitrogen atmosphere.
Preferably, the carboxymethyl cellulose described in step (1) and native graphite are according to (0.02 ~ 0.05): the mass ratio of 1 mixes.
Preferably, the thermal agitation that adds described in step (2) comprises following content: solution A is carried out magnetic agitation at 75 ~ 85 DEG C.
Beneficial effect of the present invention is as follows:
Utilize preparation method provided by the invention, by carboxymethyl cellulose and native graphite after treatment, obtained modified graphite can be used for lithium cell cathode material; Method provided by the invention, carboxymethyl cellulose cracking charcoal has good coating function to native graphite, and can effectively stop graphite that stratiform peeling phenomenon occurs in charge and discharge process, thus the effective cyclical stability improving carbon composite, obtained modified graphite reversible capacity after circulation 50 times is 310.9mAh.g-1, than native graphite height 50mAh.g-1, and maintain 97.1% of reversible capacity first.
Embodiment
Below in conjunction with specific embodiment, the present invention is described in detail.Following examples will contribute to those skilled in the art and understand the present invention further, but not limit the present invention in any form.It should be pointed out that to those skilled in the art, without departing from the inventive concept of the premise, some distortion and improvement can also be made.These all belong to protection scope of the present invention.
embodiment 1
A preparation method for Modified by Carboxymethyl Cellulose graphite, comprises the following steps:
(1), after carboxymethyl cellulose and native graphite being mixed by the mass ratio of 0.02:1, be dissolved in deionized water, obtain solution A;
(2) solution A is carried out magnetic agitation at 75 ~ 80 DEG C, until the mixture A of solution transition gel;
(3) by mixture A 105-110 DEG C of oven dry, obtain mixture B;
(4) mixture B is carbonized at 700 ~ 800 DEG C process (charing is treated to and carries out under nitrogen atmosphere) 4 ~ 6 hours, carrying out after sintering being crushed to particle diameter is 200 ~ 300 orders, obtains described Modified by Carboxymethyl Cellulose graphite.
embodiment 2
A preparation method for Modified by Carboxymethyl Cellulose graphite, comprises the following steps:
(1), after carboxymethyl cellulose and native graphite being mixed by the mass ratio of 0.05:1, be dissolved in deionized water, obtain solution A;
(2) solution A is carried out magnetic agitation at 80 ~ 85 DEG C, until the mixture A of solution transition gel;
(3) by mixture A 110-120 DEG C of oven dry, obtain mixture B;
(4) mixture B is carbonized at 800 ~ 900 DEG C process (charing is treated to and carries out under nitrogen atmosphere) 4 ~ 6 hours, carrying out after sintering being crushed to particle diameter is 200 ~ 300 orders, obtains described Modified by Carboxymethyl Cellulose graphite.
embodiment 3
A preparation method for Modified by Carboxymethyl Cellulose graphite, comprises the following steps:
(1), after carboxymethyl cellulose and native graphite being mixed by the mass ratio of 0.03:1, be dissolved in deionized water, obtain solution A;
(2) solution A is carried out magnetic agitation at 80 ~ 82 DEG C, until the mixture A of solution transition gel;
(3) by mixture A 110-115 DEG C of oven dry, obtain mixture B;
(4) mixture B is carbonized at 800 ~ 8500 DEG C process (charing is treated to and carries out under nitrogen atmosphere) 4 ~ 6 hours, carrying out after sintering being crushed to particle diameter is 200 ~ 300 orders, obtains described Modified by Carboxymethyl Cellulose graphite.
Claims (1)
1. a preparation method for Modified by Carboxymethyl Cellulose graphite, is characterized in that comprising the following steps:
(1), after carboxymethyl cellulose and native graphite being mixed in proportion, be dissolved in deionized water, obtain solution A;
(2) solution A is carried out adding thermal agitation, until the mixture A of solution transition gel;
(3) by mixture A 105-120 DEG C of oven dry, obtain mixture B;
(4) mixture B is carbonized process 4 ~ 6 hours at 700 ~ 900 DEG C, carrying out after sintering being crushed to particle diameter is 200 ~ 300 orders, obtains described Modified by Carboxymethyl Cellulose graphite;
Wherein, the charing in described step (4) is treated to be carried out under nitrogen atmosphere;
Carboxymethyl cellulose described in step (1) and native graphite are according to (0.02 ~ 0.05): the mass ratio of 1 mixes;
The thermal agitation that adds described in step (2) comprises following content: solution A is carried out magnetic agitation at 75 ~ 85 DEG C.
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| CN201310568608.XA CN103647079B (en) | 2013-11-15 | 2013-11-15 | The preparation method of Modified by Carboxymethyl Cellulose graphite |
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| CN201310568608.XA CN103647079B (en) | 2013-11-15 | 2013-11-15 | The preparation method of Modified by Carboxymethyl Cellulose graphite |
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| CN103647079A CN103647079A (en) | 2014-03-19 |
| CN103647079B true CN103647079B (en) | 2015-11-25 |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104852013B (en) * | 2015-03-17 | 2019-01-25 | 中国科学院广州能源研究所 | A kind of preparation method of the three-diemsnional electrode pole piece based on aqueous binders |
| CN106279808A (en) * | 2016-08-30 | 2017-01-04 | 安徽蓝德集团股份有限公司 | A kind of marine communication cable material with excellent mechanical performance |
| CN106644935A (en) * | 2017-03-02 | 2017-05-10 | 天津市捷威动力工业有限公司 | Method and apparatus for measuring bonding force between graphite and binder of negative electrode of lithium battery |
| CN112670463B (en) * | 2020-04-16 | 2022-06-14 | 宁波杉杉新材料科技有限公司 | Graphite negative electrode material and preparation method and application thereof |
| CN115020633A (en) * | 2022-05-30 | 2022-09-06 | 惠州市豪鹏科技有限公司 | Battery negative plate preparation method, battery negative plate and battery thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6344235B1 (en) * | 1997-05-27 | 2002-02-05 | Tdk Corporation | Method of producing an electrode for non-aqueous electrolytic cells |
| CN1697215A (en) * | 2005-05-27 | 2005-11-16 | 深圳市贝特瑞电子材料有限公司 | Cathode material of composite carbon in use for lithium ion battery and preparation method |
| CN101212042A (en) * | 2006-12-31 | 2008-07-02 | 比亚迪股份有限公司 | Method for encapsulating active material for negative pole of Li-ion secondary battery |
| CN102148355A (en) * | 2011-03-03 | 2011-08-10 | 江西正拓新能源科技有限公司 | Cathode material for lithium-ion power battery and preparation method thereof |
| CN102208633A (en) * | 2011-04-28 | 2011-10-05 | 侯春平 | Modified carbon micro powder lithium ion battery cathode material and preparation method thereof and lithium ion battery |
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2013
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6344235B1 (en) * | 1997-05-27 | 2002-02-05 | Tdk Corporation | Method of producing an electrode for non-aqueous electrolytic cells |
| CN1697215A (en) * | 2005-05-27 | 2005-11-16 | 深圳市贝特瑞电子材料有限公司 | Cathode material of composite carbon in use for lithium ion battery and preparation method |
| CN101212042A (en) * | 2006-12-31 | 2008-07-02 | 比亚迪股份有限公司 | Method for encapsulating active material for negative pole of Li-ion secondary battery |
| CN102148355A (en) * | 2011-03-03 | 2011-08-10 | 江西正拓新能源科技有限公司 | Cathode material for lithium-ion power battery and preparation method thereof |
| CN102208633A (en) * | 2011-04-28 | 2011-10-05 | 侯春平 | Modified carbon micro powder lithium ion battery cathode material and preparation method thereof and lithium ion battery |
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