Electrochemical Performance of Si-C Composites Prepared by Discharge-Plasma Assisted Milling

Authors

Yu-long CHEN, School of Materials Science and Engineering, South China University of Technology，Guangdong Key Lab of Advanced Materials for Energy Storage, Guangzhou 510640, China;
Ren-zong HU, School of Materials Science and Engineering, South China University of Technology，Guangdong Key Lab of Advanced Materials for Energy Storage, Guangzhou 510640, China;
Hui LIU, School of Materials Science and Engineering, South China University of Technology，Guangdong Key Lab of Advanced Materials for Energy Storage, Guangzhou 510640, China;
Wei SUN, School of Materials Science and Engineering, South China University of Technology，Guangdong Key Lab of Advanced Materials for Energy Storage, Guangzhou 510640, China;
Min ZHU, School of Materials Science and Engineering, South China University of Technology，Guangdong Key Lab of Advanced Materials for Energy Storage, Guangzhou 510640, China;Follow

Corresponding Author

Min ZHU(memzhu@scut.edu.cn)

Abstract

Silicon-carbon (Si-C) composites, with microstructure of multi-scaled Si particles being homogenously dispersed in micro-sized carbon matrix, had been prepared by dielectric barrier discharge plasma assisted two-step milling for the first time. The Si-C composite anode had a discharge capacity of 1259 mAh·g^-1 at the first cycle, while the capacity retained 474 and 396 mAh·g^-1 after 20 and 100 cycles, respectively. Charge-discharge curves and AC impedance response indicated that both silicon and carbon phases in the composite anode were involved during the lithiation/delithiation reactions and the electron transport resistance in the Si-C composite anode was much lower than that in the pure Si anode.

Graphical Abstract

Keywords

lithium-ion batteries, anode, Si-C composites, discharge plasma, ball milling

DOI Link

https://doi.org/10.13208/j.electrochem.130227

Publication Date

2014-02-25

Online Available Date

2014-02-24

Revised Date

2013-07-01

Received Date

2013-02-27

Recommended Citation

Yu-long CHEN, Ren-zong HU, Hui LIU, Wei SUN, Min ZHU. Electrochemical Performance of Si-C Composites Prepared by Discharge-Plasma Assisted Milling[J]. Journal of Electrochemistry, 2014 , 20(1): 51-55.
DOI: 10.13208/j.electrochem.130227
Available at: https://jelectrochem.xmu.edu.cn/journal/vol20/iss1/9