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IJCT Vol.14(2) [March 2007] >


Title: Electro catalytic amorphous nickel alloy
Authors: Muralidharan, V S
Keywords: Amorphous alloy
Electro catalysis
Hydrogen evolution
Ni-S-Co alloy
Issue Date: Mar-2007
Publisher: CSIR
IPC CodeC22C45/04, C25B1/44
Abstract: Nickel and nickel based alloy deposits are used as cathode materials for hydrogen evolution. Watt’s bath modified with thiourea was used to deposit Ni-S and Ni-S-Co alloys. In presence of thiourea, Watt’s bath offered amorphous Ni-S alloy. In presence of CoCl₂ and thiourea, amorphous Ni-S-Co alloy was formed. Hydrogen evolution reaction occurred faster on amorphous Ni-S-Co alloy compared to amorphous Ni-S alloy from 28 wt% NaOH. Hydrogen evolution reaction rate increased with temperature on these amorphous alloys. A fast Volmer followed by slow Heyrovsky reaction occurred on the surfaces of these alloys. Heat treatment of amorphous Ni-S-Co alloy decreased the electro catalytic activity due to the disturbance in the amorphous structure.
Page(s): 161-165
ISSN: 0971–457X
Source:IJCT Vol.14(2) [March 2007]

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