Citation: LI Ying-Ying, HUANG Li-Zhen, CAI Xiao-Wei, CHEN Zhao-Yang, LIU Wei-Ming, SHI Mei-Qin. In Situ Synthesis and Application in Methanol Oxidation of Lamellar WC/C[J]. Chinese Journal of Inorganic Chemistry, ;2018, 34(8): 1437-1447. doi: 10.11862/CJIC.2018.162 shu

In Situ Synthesis and Application in Methanol Oxidation of Lamellar WC/C

1.
College of Chemical Engineering, Zhejiang University of Technology, Hangzhou 310032, China
2.
Taizhou Feichang Metal Fuel Cell Research Center, Taizhou, Zhejiang 318000, China

Corresponding author: SHI Mei-Qin, smq@zjut.edu.cn
Received Date: 8 February 2018
Revised Date: 2 May 2018

Figures(7)

The layered tungsten carbide/carbon composite (WC/C) was synthesized by a programmed temperature method using tungsten sulfide (WS₂) as a precursor, sodium chloride (NaCl) as a medium and CO as a gas carbon source. The chemical composition, morphology and structure of the samples were characterized by XRD, XANES and SEM respectively. A thin layered WC with holes has been synthesized because of the natural lamellar structure of WS₂ and the anchoring effect of molten NaCl during high-temperature carburization. In addition, NaCl and the metal surface of WS₂ could be used as the catalyst for in situ growing of carbon film on the surface of WC effectively, which provides a useful channel for electronic transmission. The electrocatalytic performance of the Pt/WC/C electrocatalyst was investigated after loading a small amount of Pt on WC/C. The results show that the Pt/WC/C electrocatalyst exhibits a better electrocatalytic activity and stability, also a higher resistance toward CO poisoning in methanol oxidation (MOR).
- tungsten sulfide,
- sodium chloride,
- tungsten carbide/carbon,
- electrocatalysis,
- methanol oxidation
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1.
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