Enhanced electrocatalytic activity of MoSx on TCNQ-treated electrode for hydrogen evolution reaction

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題名:	Enhanced electrocatalytic activity of MoSx on TCNQ-treated electrode for hydrogen evolution reaction
作者:	蘇清源;Chang, Yung-Huang;Nikam, Revannath D;Lin, Cheng-Te;Huang, Jing-Kai;Tseng, Chien-Chih;Hsu, Chang-Lung;Cheng, Chia-Chin;Su, Ching-Yuan;Li, Lain-Jong;Chua, Daniel H.C.
貢獻者:	工學院能源工程研究所
關鍵詞:	active sites;ammonium compounds;carbon;catalysts;clean energy;electrodes;geometry;hydrogen production;molybdenum;particle size;sulfides;thermal degradation
日期:	2014-01-01
上傳時間:	2026-04-23 11:58:59 (UTC+8)
出版者:	American Chemical Society
摘要:	摘要： Molybdenum sulfide has recently attracted much attention because of its low cost and excellent catalytical effects in the application of hydrogen evolution reaction (HER). To improve the HER efficiency, many researchers have extensively explored various avenues such as material modification, forming hybrid structures or modifying geometric morphology. In this work, we reported a significant enhancement in the electrocatalytic activity of the MoSₓ via growing on Tetracyanoquinodimethane (TCNQ) treated carbon cloth, where the MoSₓ was synthesized by thermolysis from the ammonium tetrathiomolybdate ((NH₄)₂MoS₄) precursor at 170 °C. The pyridinic N- and graphitic N-like species on the surface of carbon cloth arising from the TCNQ treatment facilitate the formation of Mo⁵⁺ and S₂²– species in the MoSₓ, especially with S₂²– serving as an active site for HER. In addition, the smaller particle size of the MoSₓ grown on TCNQ-treated carbon cloth reveals a high ratio of edge sites relative to basal plane sites, indicating the richer effective reaction sites and superior electrocatalytic characteristics. Hence, we reported a high hydrogen evolution rate for MoSₓ on TCNQ-treated carbon cloth of 6408 mL g–¹ cm–² h–¹ (286 mmol g–¹ cm–² h–¹) at an overpotential of V = 0.2 V. This study provides the fundamental concepts useful in the design and preparation of transition metal dichalcogenide catalysts, beneficial in the development in clean energy. 出版日期： 2014-10-22 出處： ACS applied materials & interfaces, 2014-10, Vol.6 (20 p.17679-17685), p.17679-17685 資源來源： American Chemical Society Journals 識別號： ISSN: 1944-8252 識別號： DOI: 10.1021/am5039592
顯示於類別:	[能源工程研究所 ] 期刊論文

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