Nanostructured nickel sulfide synthesized via a polyol route as a cathode material for the rechargeable lithium battery

Authors

Jiazhao Wang, University of WollongongFollow
Sau Yen Chew, University of WollongongFollow
David Wexler, University of WollongongFollow
Guoxiu Wang, University of WollongongFollow
See How Ng, University of WollongongFollow
Shi Zhong, University of WollongongFollow
Hua-Kun Liu, University of WollongongFollow

RIS ID

21873

Publication Details

Wang, J., Chew, S., Wexler, D., Wang, G., Ng, S., Zhong, S. & Liu, H. K. (2007). Nanostructured nickel sulfide synthesized via a polyol route as a cathode material for the rechargeable lithium battery. Electrochemistry Communications, 9 (8), 1877-1880.

Abstract

Nanostructured nickel sulfide (NiS) was synthesized via a simple polyol route. The NiS powders were characterized by X-ray diffraction, scanning electron microscopy, transmission electron microscopy, and electrochemical testing. The results revealed that the cycle life of the annealed NiS sample was improved over that of the as-prepared sample. The electrochemical performance was also tested using 1 M lithium trifluoromethanesulfonimide (LiTFSI) in a solvent of poly(ethylene glycol) dimethyl ether (PEGDME) in order to compare with a sample tested in the conventional electrolyte of 1 M LiPF6 in a mixture of ethylene carbonate (EC) and dimethyl carbonate (DMC). The results showed that the electrochemical properties were improved by using the 1 M LiTFSI/PEGDME electrolyte.