Synthesis of tungsten disulfide (WS2) nanoflakes for lithium ion battery application

Authors

Chuanqi Feng, Hubei University, ChinaFollow
Lunfeng Huang, Hubei University, China
Zaiping Guo, University of WollongongFollow
Hua-Kun Liu, University of WollongongFollow

RIS ID

21870

Publication Details

Feng, C, Huang, L, Guo, Z & Liu, HK (2007), Synthesis of tungsten disulfide (WS2) nanoflakes for lithium ion battery application, Electrochemistry Communications, 9(1), pp. 119-122.

Abstract

A novel method (a rheological phase reaction) was used to synthesize WS₂ nanoflakes by adding oxalic acid as a reducing reagent. High resolution electron microscopy observations revealed that the as-prepared WS₂ nanoflakes had started to curve and that WS₂ nanotubes were partly formed. The lithium intercalation/deintercalation behavior of as-prepared WS₂ electrode was also investigated. It was found that the WS₂ nanoflake electrode exhibited higher specific capacity with very good cycling stability compared to WS₂ nanotube or nanoparticle electrodes. The reasons for the improved electrochemical performance of the nanoflake electrodes are also discussed.