CN104022272A - Method based on negative electrode composite material battery - Google Patents
Method based on negative electrode composite material battery Download PDFInfo
- Publication number
- CN104022272A CN104022272A CN201310063731.6A CN201310063731A CN104022272A CN 104022272 A CN104022272 A CN 104022272A CN 201310063731 A CN201310063731 A CN 201310063731A CN 104022272 A CN104022272 A CN 104022272A
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- China
- Prior art keywords
- battery
- microwave
- composite
- electrode material
- negative electrode
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Classifications
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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
- H01M4/362—Composites
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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 provides a method based on a negative electrode composite material battery. A composite electrode material is prepared by adopting a mechanical mixing process or microwave in-situ reducing process, and the electrochemical performances of composite materials of different ratios are researched. The composite negative electrode material is reduced and oxidized by adopting a microwave process, thus the method has the advantages of high speed and efficiency, good process stability and the like, prevents use of hypertoxic hydrazine hydrate, and is suitable for industrialized production. The composite electrode material, composite carbon-carbon and a carbon-metal oxide material develop excellent performances of all materials; through a synergistic effect, the negative electrode material of a battery with excellent capacity and cycle performance is finally prepared.
Description
Technical field
The present invention relates to battery electrode preparing technical field, particularly a kind of method based on anode material battery.
Background technology
Along with electronic product is day by day universal and all many-sides such as developing battery are had higher requirement, to the energy density of battery power.Compared with other batteries, lithium ion battery has significant superiority in performance, has extended cycle life, and energy density is high, and operating voltage is high, and the advantage such as pollution-free.Be to choose the positive and negative pole material that charge-discharge performance is good to the key of performance of lithium ion battery, key is that lithium ion battery negative is the important component part of battery, and its structure and performance directly affect capacity and the cycle performance of lithium ion battery.
The negative material of commercial Li-ion battery main flow, charge-discharge performance is good,, its theory discharging and recharging is than high.We are by finding new negative material, adjust that material structure etc. is developed height ratio capacity, had extended cycle life, low cost, and the lithium ion battery negative material of non-environmental-pollution, have undoubtedly important value.
CN 102683657A discloses a kind of preparation method of cell negative electrode material, and its process is that tin source presoma is mixed with graphene oxide, prepares tin ash/graphene composite material by hydro thermal method.Test electrochemistry, proves that the material obtaining has good chemical property, can greatly improve electron conduction ability, for the application of lithium ion battery provides the lithium ion battery negative that a kind of processing technology is simple, with low cost, capacity is high and safe.The composite material that said method makes does not form desirable buffer structure and holds the volumetric expansion of tin ash in charge and discharge process.
Summary of the invention
The present invention applies the reduction-oxidation of oxidation microwave method
anode material.Adopt mechanical mixing combination electrode material, and study the chemical property of the composite material of different proportionings.Utilize microwave method one step original position synthesis of metal oxide combination electrode material.Test the chemical property of above synthetic material, filter out the electrode material with height ratio capacity good cycling stability.Synthetic electrode material is made electrode, and is assembled into button monocell, adopts its chemical properties of test such as blue electric cell tester and electrochemical workstation, filters out the negative battery material of excellent performance.
The present invention has simplified technique and has improved greatly the reduction-oxidation of efficiency employing microwave method simultaneously,
anode materialhave speed fast, the advantage such as efficiency, technology stability are good avoids using hypertoxic hydrazine hydrate simultaneously, is applicable to industry and produces.Compound carbon-to-carbon, carbon-metal oxide material, brings into play the premium properties of each material, by cooperative effect, finally prepares the superior negative battery material of capacity and cycle performance.
Embodiment
1. adopt improved Hummer method to prepare negative battery material, in ice-water bath, assemble the reaction bulb of 250 mL, add the appropriate concentrated sulfuric acid, under stirring, add the solid mixture of 2 g graphite powders and 1 g sodium nitrate, gradation adds 6 g potassium permanganate again, control reaction temperature and be no more than 20 DEG C, stirring reaction a period of time, then be warmed up to 35 DEG C of left and right, continue to stir 30 min, more slowly add a certain amount of deionized water, continuous mixing after 20 min, and add appropriate hydrogen peroxide to reduce residual oxidant, make solution become glassy yellow.Use microwave method directly graphene oxide to be reduced under strict controlled condition, the Graphene of preparation structure and stable performance.It is the fine powder of 1～100 micron that graphite oxide is ground to form to particle diameter; under vacuum degree 0.01Pa～10Pa or atmosphere protection state, graphite oxide is carried out to microwave radiation processing with 100W～2000W, 0.1～200min holds time; graphite oxide volume expands rapidly, obtains reduced graphene.Filter while hot, and with 5%HCl solution and deionized water wash until in filtrate sulfate radical-free be detected.The vacuum drying chamber that finally filter cake is placed in to 60 DEG C is fully dry, saves backup.
2. the condition of being reacted and being mixed by control is chosen the compound proportioning of different carbon-to-carbons simultaneously, and mechanical mixture or microwave in-situ reducing process are prepared composite negative pole battery material.Obtain the negative battery material of Performance optimization.
3. adopt its chemical properties of test such as blue electric cell tester and electrochemical workstation, above synthetic electrode material is made to electrode, and be assembled into button monocell, filter out the lithium ion battery negative material of excellent performance.
Graphene oxide and metal oxide precursor are mixed to get to uniform precursor mixed solution, control the conditions such as Ph value, temperature and stirring, and then under the strict condition of controlling, single step reaction original position is synthetic in microwave reactor
anode material.
Claims (6)
1. the method based on anode material battery, is characterized in that: the present invention adopts the method for microwave method reduction anode material battery.
2. method according to claim 1, is characterized in that: use microwave method under strict controlled condition directly by graphene oxide reduction, the reduction anode material of preparation structure and stable performance.
3. method according to claim 1, is characterized in that: prepare anode material by mechanical mixture or microwave in-situ reducing process.
4. method according to claim 4, is characterized in that: the condition of controlling reaction and mixing, choose the compound proportioning of different carbon-to-carbons simultaneously, and obtain the ion battery negative material of Performance optimization.
5. method according to claim 1, it is characterized in that: control the conditions such as Ph value, temperature and stirring, oxidized metal oxide precursor is mixed to get to uniform precursor mixed solution, and then under the strict condition of controlling, single step reaction original position synthesis of metal oxide combination electrode material in microwave reactor.
6. according to method described in claim 1-6, it is characterized in that: synthetic electrode material is made electrode, and be assembled into button monocell, and adopt its chemical properties of test such as blue electric cell tester and electrochemical workstation, filter out the lithium ion negative battery material of excellent performance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310063731.6A CN104022272A (en) | 2013-02-28 | 2013-02-28 | Method based on negative electrode composite material battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310063731.6A CN104022272A (en) | 2013-02-28 | 2013-02-28 | Method based on negative electrode composite material battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104022272A true CN104022272A (en) | 2014-09-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310063731.6A Pending CN104022272A (en) | 2013-02-28 | 2013-02-28 | Method based on negative electrode composite material battery |
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| CN (1) | CN104022272A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105810916A (en) * | 2016-05-19 | 2016-07-27 | 青岛大学 | Preparation method for SnO<2>/graphene/SnO<2> lithium ion battery negative electrode material |
| CN108017052A (en) * | 2017-11-24 | 2018-05-11 | 广东聚石化学股份有限公司 | A kind of method of prepare with scale graphene |
| CN112687902A (en) * | 2020-12-28 | 2021-04-20 | 龙岩学院 | Preparation method of nitrogen-doped graphene-supported hollow nano platinum composite material |
-
2013
- 2013-02-28 CN CN201310063731.6A patent/CN104022272A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105810916A (en) * | 2016-05-19 | 2016-07-27 | 青岛大学 | Preparation method for SnO<2>/graphene/SnO<2> lithium ion battery negative electrode material |
| CN105810916B (en) * | 2016-05-19 | 2018-09-21 | 青岛大学 | A kind of SnO2/ graphene/SnO2The preparation method of lithium ion battery negative material |
| CN108017052A (en) * | 2017-11-24 | 2018-05-11 | 广东聚石化学股份有限公司 | A kind of method of prepare with scale graphene |
| CN108017052B (en) * | 2017-11-24 | 2020-05-08 | 广东聚石化学股份有限公司 | Method for preparing graphene in large scale |
| CN112687902A (en) * | 2020-12-28 | 2021-04-20 | 龙岩学院 | Preparation method of nitrogen-doped graphene-supported hollow nano platinum composite material |
| CN112687902B (en) * | 2020-12-28 | 2022-06-10 | 龙岩学院 | Preparation method of nitrogen-doped graphene-supported hollow nano platinum composite material |
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Application publication date: 20140903 |