Robert Boschgmbh

Shanghai Jiao Tong University

Bosch (China) Investment Ltd.

Jiulin Wang

Jun Yang

Longjie Zhou

NaHong Zhao

Pengfei Gao

Yanna Nuli

Lichao Yin

Haiping Jia

The present invention provides a cathode material for a Li&#x2014;S battery. The cathod material comprises dehydrogenized acrylonitrile based polymer, sulfur and GNS (Graphene NanoSheet), wherein the cathode material particles are spherical, the content of dehydrogenized acrylonitrile based polymer is 20-79 wt %, the content of sulfur is 20-79 wt % and the content of GNS is 1-30 wt %. Also provided a method for preparing a cathode material, a cathode made of the cathod material and a Li&#x2014;S battery comprising the cathode.

Cathode material for a Li&#x2014;S battery and the method for preparing the same, a cathode made of the cathode material and a Li&#x2014;S battery comprising the cathode

Disclosed in the invention are a silicon-carbon composite anode material for lithium ion batteries and a preparation method thereof The material consists of a porous silicon substrate and a carbon coating layer. The preparation method of the material comprises preparing a porous silicon substrate and a carbon coating layer. The silicon-carbon composite anode material for lithium ion batteries has the advantages of high reversible capacity, good cycle performance and good rate performance. The material respectively shows reversible capacities of 1,556 mAh, 1,290 mAh, 877 mAh and 474 mAh/g at 0.2 C, 1 C, 4 C and 15 C rates; the specific capacity remains above 1,500 mAh after 40 cycles at the rate of 0.2 C and the reversible capacity retention rate is up to 90 percent.

Silicon-carbon composite anode material for lithium ion batteries and a preparation method thereof

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Shanghai, China

Jiulin Wang