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Carbon-silicon composite electrode material and preparation method thereof

An electrode material, carbon-silicon composite technology, applied in battery electrodes, circuits, electrical components, etc., can solve problems such as discounts

Active Publication Date: 2015-08-26
江门市荣炭电子材料有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

It makes the effect of improving the battery capacity by this design greatly reduced

Method used

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  • Carbon-silicon composite electrode material and preparation method thereof
  • Carbon-silicon composite electrode material and preparation method thereof
  • Carbon-silicon composite electrode material and preparation method thereof

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preparation example Construction

[0067]Since the preparation method of the above-mentioned carbon-silicon composite electrode material can complete the entire process by means of aqueous phase solution and dry mixing, the preparation method according to this embodiment can not only eliminate the problem of waste generated by technicians using the organic phase solution process , and can avoid the poisoning of volatile organic compounds (volatile organic compounds, VOC) to the operation and the environment, thereby achieving a more environmentally friendly effect.

[0068] On the other hand, since the electrical properties of the first organic polymer and the second organic polymer are opposite, in the preparation process according to this embodiment, the first organic polymer and the second organic polymer may be due to the electrical properties of each other. The electrostatic interaction of mutual attraction produces the cross-linking effect of self-assembly. More preferably, a stable ionic bond can be form...

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Abstract

The invention discloses a carbon-silicon composite electrode material and a preparation method thereof. The carbon-silicon composite electrode material can improve the effective dispersity of silicon-containing particles on the surfaces of carbon-containing particles by coating the carbon-containing particles and the silicon-containing particles with organic high-molecular modified films. The carbon-silicon composite electrode material can comprise a carbon-containing conducting film coating the surface of the carbon-silicon composite electrode material to improve effective adhesion of the silicon-containing particles. The preparation method of the carbon-silicon composite electrode material can be completed in an aqueous-phase solution through dry mixing. Therefore, damage of volatile organic compounds to an operator and environment can be effectively avoided. According to the carbon-silicon composite electrode material and the preparation method, the carbon-silicon composite electrode material can effectively improve the electric capacity, the charging and discharging efficiency and the cycle life of a battery product using the carbon-silicon composite electrode material.

Description

technical field [0001] The invention relates to a carbon-based electrode material, in particular to a carbon-silicon composite electrode material and a preparation method thereof. Background technique [0002] The development of lithium-ion batteries depends to a large extent on the development and application of high-performance positive and negative electrode materials. At present, the preparation cost of the practical mesocarbon microsphere material (MCMB) is relatively high. In terms of natural and artificial graphite, in order to reduce the initial irreversible capacitance and improve the cycle life, it is necessary to modify the surface with asphalt-like aromatic compound materials. During the preparation process, carbonization needs to be carried out at a high temperature above 1300 ° C. Among them, the raw materials (pitch-like aromatic hydrocarbons Compounds) price fluctuations, as well as the environmental pollution and energy consumption caused by high-temperatur...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/133H01M4/134H01M4/1393H01M4/1395
CPCH01M4/139H01M4/362H01M4/366H01M4/386H01M4/583H01M4/62H01M4/625H01M10/0525Y02E60/10
Inventor 李富生吴乃立周宪聪吴玉祥陈伯坤
Owner 江门市荣炭电子材料有限公司
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