COMPOSITE ANODE FOR LITHIUM ION BATTERIES

摘要

A composite anode for a lithium-ion battery is manufactured from silicon nanoparticles having diameters mostly under 10 nm; providing an oxide layer on the silicon nanoparticles; dispersing the silicon nanoparticles in a polar liquid; providing a graphene oxide suspension; mixing the polar liquid containing the dispersed silicone nanoparticles with the graphene oxide suspension to obtain a composite mixture; probe-sonicating the mixture for a predetermined time; filtering the composite mixture to obtain a solid composite; drying the composite; and reducing the composite to obtain graphene and silicon.

主权项

1. A composite anode for a lithium-ion battery, the anode comprising:
a bulk anode matrix formed by graphene sheets; a plurality of nanoparticles embedded in the graphene sheets, the silicon nanoparticles having diameters mostly no greater than 10 nm, wherein most of the silicon-containing nanoparticles are arranged in clusters of diameters no greater than 20 nm.