Electrochemical Performance of MoO₂-C Composite Coatings

Authors

Quan-yi LI, School of Materials Engineering, Shanghai University of Engineering Science, Shanghai 201620;
Qi YANG, School of Materials Engineering, Shanghai University of Engineering Science, Shanghai 201620;Follow
Yan-hong ZHAO, School of Mechanical Engineering, Chongqing University of Technology, Chongqing 400054, China;

Corresponding Author

Qi YANG(qiyang@163.com)

Abstract

The molybdenum dioxide-carbon(MoO₂-C)composite coatings on the surface of Cu foils were prepared by simple knife coating route and followed by sintering in vacuum. The morphology, composition, structure and electrochemical performance of the MoO₂-C composite coatings were investigated. The results demonstrated that the MoO₂-C composite coatings consist of MoO₂ nano-particles with monoclinic crystal structure and amorphous carbon. Some MoO₂ nano-particles with a size range of 5-30nm were loaded on the surface of carbon matrices; while some MoO₂ nano-particles with a size of ~5nm were encapsulated inside. The composite coatings showed porous structure with the pore size ranging 1~3nm. The composite coatings attached firmly on the surface of Cu foils without any cracks accurred at their interface. The Cu-supported MoO₂-C composite coatings delivered high capacity and good cyclic performance with a capacity of 814 mAh·g^-1 at a current density of 100mA·g^-1 after 100 cycles without apparent capacity fading during cycling, and good rate performance with a capacity of 188mAh·g^-1 even at a high current density of 5000mA·g^-1.

Graphical Abstract

Keywords

molybdenum dioxide, carbon based composite, coating, anode materials, electrochemical performance

DOI Link

https://doi.org/10.13208/j.electrochem.170409

Publication Date

2018-04-28

Online Available Date

2017-06-07

Revised Date

2017-05-24

Received Date

2017-04-09

Recommended Citation

Quan-yi LI, Qi YANG, Yan-hong ZHAO. Electrochemical Performance of MoO₂-C Composite Coatings[J]. Journal of Electrochemistry, 2018 , 24(2): 160-165.
DOI: 10.13208/j.electrochem.170409
Available at: https://jelectrochem.xmu.edu.cn/journal/vol24/iss2/8