Hydrogen Evolution Reaction of the Electrodeposited Amorphous Ni--S—Co Alloy in Alkaline Medium

Acta Metall Sin

2004, Vol. 40

Issue (3): 331-336 DOI:

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Hydrogen Evolution Reaction of the Electrodeposited Amorphous Ni--S—Co Alloy in Alkaline Medium

HAN Qing; CHEN Jianshe; LIU Kuiren; LI Xin; WEI Xujun

School of Materials & Metallurgy; Northeastern University

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HAN Qing; CHEN Jianshe; LIU Kuiren; LI Xin; WEI Xujun. Hydrogen Evolution Reaction of the Electrodeposited Amorphous Ni--S—Co Alloy in Alkaline Medium. Acta Metall Sin, 2004, 40(3): 331-336 .

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Abstract The amorphous Ni--S--Co alloy was obtained by electrodeposition method, and the effect of the current density on its structure and the contents of S and Co were measured. The tested results on the electrochemical properties show that the hydrogen evolution reaction overpotential of amorphous Ni--S--Co is only 70 mV and its electrochemical activity is much higher than other electrodes including amorphous Ni--S electrode. Furthermore, the corresponding electrochemical parameters, i.e. the Tafel slope, the exchange current density and the activation energy ,were obtained. The electrochemical stability of amorphous Ni--S--Co alloy is determined to be higher than that of amorphous Ni—S alloy. The high electrochemical activity and stability of amorphous Ni--S--Co electrode is also determined by the long--term electrolysis under the industrial conditions.

Key words: amorphous Ni--S--Co alloy electrodeposition

Received: 27 January 2003

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	HAN Qing
	CHEN Jianshe
	LIU Kuiren
	LI Xin
	WEI Xujun

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https://www.ams.org.cn/EN/ OR https://www.ams.org.cn/EN/Y2004/V40/I3/331

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