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Effect of anodic treatment on the electrocatalytic activity of superficial Raney nickel catalyst in cathodic hydrogen

Journal Article · · Sov. Electrochem. (Engl. Transl.); (United States)
OSTI ID:5160673
; ;

This work is concerned with the effect of oxidation on the activity of Raney nickel catalyst in cathodic hydrogen evolution. The superficial Raney nickel catalyst (nickel SRC) was prepared by a previously described procedure. The surface of the nickel SRC was oxidized by applying an anodic sweep over the potential range from 0.25 to 1.00 V with a potential sweep rate of 1 mV/sec. The rate of cathodic hydrogen evolution increases after pretreatment of the surface of nickel SRC by application of an anodic pulse. A significant increase in the reaction rate most probably is due to oxygen adsorption on the nickel SRC surface. The largest increase in the amount of weakly bound hydrogen corresponds to the most active electrode. Oxidation of the nickel surface by an anodic pulse causes both an acceleration and a retardation of the cathodic hydrogen evolution reaction.

Research Organization:
Moscow Power Engineering Institute
OSTI ID:
5160673
Journal Information:
Sov. Electrochem. (Engl. Transl.); (United States), Journal Name: Sov. Electrochem. (Engl. Transl.); (United States) Vol. 21:3; ISSN SOECA
Country of Publication:
United States
Language:
English

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Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400400* -- Electrochemistry
ADSORPTION
ALLOYS
ANODIZATION
CATALYSTS
CATALYTIC EFFECTS
CATHODES
CHALCOGENIDES
CHEMICAL COATING
CHEMICAL REACTION KINETICS
CHEMICAL REACTIONS
CHEMISTRY
CORROSION PROTECTION
DEPOSITION
DESORPTION
ELECTROCATALYSTS
ELECTROCHEMICAL COATING
ELECTROCHEMISTRY
ELECTRODES
ELECTROLYSIS
ELEMENTS
HYDROGEN
KINETICS
LYSIS
NICKEL ALLOYS
NICKEL COMPOUNDS
NICKEL OXIDES
NONMETALS
OXIDATION
OXIDES
OXYGEN
OXYGEN COMPOUNDS
POTENTIOMETRY
REACTION KINETICS
SORPTION
SURFACE COATING
TITRATION
TRANSITION ELEMENT COMPOUNDS