Robert Boschgmbh

Shanghai Jiaotong University

Xuejiao Feng

Jun Yang

Longjie Zhou

Jingjun Zhang

Yuqian Dou

An SiOx/Si/C composite material, includes SiOx/Si composite particles and a carbon coating layer coated on the SiOx/Si composite particles. The SiOx/Si composite particles include nano-silicon crystallites embedded in an SiOx (0&#x3c;x&#x2264;2) amorphous matrix phase. The SiOx/Si composite particles have an Si:O molar ratio of 5:1-1.1:1, preferably 2:1-1.2:1. A process for producing an SiOx/Si/C composite material, includes a) milling SiO powder together with a metal reductant in a molar ratio of 125:1-10:1, preferably 2:11-5:1, b) totally removing the oxidation product of the metal reductant to obtain SiOx/Si composite particles, and c) coating the SiOx/Si composite particles with carbon to obtain the SiOx/Si/C composite material.

SiOx/Si/C composite material and process of producing thereof, and anode for lithium ion battery comprising said composite material

A silicon/carbon composite comprises mesoporous silicon particles and carbon coating provided on the silicon particles, wherein the silicon particles have two pore size distribution of 2-4 nm and 20-40 nm. A process of preparing the silicon/carbon composite comprises the steps of preparing mesoporous silicon particles via a mechanochemical reaction between SiCland LiSiunder ball milling and subsequent thermal treatment and washing process, and coating the mesoporous silicon particles with carbon. An anode for lithium ion battery comprises the silicon/carbon composite. A lithium ion battery comprises the silicon/carbon composite.

Growing community of inventors

Shanghai, China

Xuejiao Feng