Effects of Sulfur-Containing Additive on Low Temperature Performance of Graphite Anode

Authors

Ze-li WU, State Key Lab for Physical Chemistry of Solid Surfaces, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, Fujian, China;
Ye-zhen ZHENG, State Key Lab for Physical Chemistry of Solid Surfaces, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, Fujian, China;
Zhong-ru ZHANG, State Key Lab for Physical Chemistry of Solid Surfaces, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, Fujian, China;
Yong YANG, State Key Lab for Physical Chemistry of Solid Surfaces, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, Fujian, China;Follow

Corresponding Author

Yong YANG(yyang@xmu.edu.cn)

Abstract

The low temperature performance of lithium ion battery mainly depends on the graphite anode, and one of the research focuses is to improve the low temperature performance of the anode by additives. In this paper, the effects of different sulfur-containing functional groups such as DTD (ethylene sulfate), 1,3-PS (1,3-propane sultone) and ES (ethylene sulfite) on low temperature performances of artificial graphite materials were systematically studied. The results in density functional theory (DFT) calculations, cyclic voltammetry (CV), scanning electron microscopy (SEM) and charge-discharge measurement clearly demonstrated that all three sulfur-containing additives could participate in formation of films on the surface of electrode, which had a greater impact on the low temperature properties. The apparent enhancement was achieved with DTD because of the film formed with a smaller resistance. In contrast, the reduced performance was observed with 1,3-PS due to its non-conductive film formed at low temperatures, while no obvious effect with ES. The data in electrochemical impedance spectroscopy (EIS) and X-ray photoelectron spectroscopy (XPS) indicated that these three kinds of additives influenced differently the low temperature performances of lithium ion battery due mainly to their significantly different impedances resulted from the films formed at the interfaces of electrodes.

Graphical Abstract

Keywords

lithium ion battery, artificial graphite, sulfur-containing additive, low temperature performance

DOI Link

https://doi.org/10.13208/j.electrochem.180322

Publication Date

2018-10-28

Online Available Date

2018-04-28

Revised Date

2018-04-09

Received Date

2018-03-22

Recommended Citation

Ze-li WU, Ye-zhen ZHENG, Zhong-ru ZHANG, Yong YANG. Effects of Sulfur-Containing Additive on Low Temperature Performance of Graphite Anode[J]. Journal of Electrochemistry, 2018 , 24(5): 529-537.
DOI: 10.13208/j.electrochem.180322
Available at: https://jelectrochem.xmu.edu.cn/journal/vol24/iss5/11