Environment-friendly carbon-silicon composite material

Abstract

The invention discloses an environment-friendly carbon-silicon composite material. The environment-friendly carbon-silicon composite material comprises the following substances in parts by weight: 55-64 parts of betelnut shell powder, 35-42 parts of nano-silicon powder, 10-12 parts of isobutyl methacrylate, 5-9 parts of nano-calcium sulfate, 11-14 parts of organic montmorillonite, 13-20 parts of stearic acid, 3-7 parts of polycarbodiimide, 5-9 parts of liquid paraffin, 10-14 parts of N-N'-diphenyl-p-phenylenediamine, 3.5-6.4 parts of aluminum acetylacetonate and 10-14 parts of carbon monofluoride. The environment-friendly carbon-silicon composite material has the beneficial effects that raw materials are low in cost, are wide in sources and meet the requirements of green chemical industry; a carbon material is composited with silicon by virtue of a mechanical ball-milling method, so that the preparation process is simple, and the materials are adequately composited together; the initial charge-discharge capacity of the carbon-silicon composite material disclosed by the invention is greatly increased, and the carbon-silicon composite material has good cycling stability.

Description

technical field [0001] The invention relates to a green and environment-friendly carbon-silicon composite material. Background technique [0002] In recent years, with the gradual reduction of non-renewable energy sources and more and more serious environmental problems in the world, green and pollution-free new high-energy chemical power sources have become a hot spot for the development of countries all over the world. Due to the advantages of high energy, long life, low consumption, no pollution, no memory effect, small self-discharge, low internal resistance, high cost performance, and less pollution, lithium-ion batteries are widely used in optoelectronics, information, transportation, national defense and military fields. . With the continuous development of miniaturized electronic equipment and the increasing demand for high-energy electronic equipment, people's requirements for miniaturized electronic equipment continue to increase, and new requirements are also put...

AI Technical Summary

Problems solved by technology

However, the silicon material will undergo a huge volume change during the charge and discharge process, which will easily cause the pulverization of the electrode material structure and lead to a decrease in cycle performance.