Electrodeposition of nickel and cobalt oxides onto platinum and graphite electrodes for alkaline water electrolysis

Journal Article · Fri Jun 01 04:00:00 EDT 1984 · J. Electrochem. Soc.; (United States)

DOI:https://doi.org/10.1149/1.2115870· OSTI ID:6286407

Chen, Y W.D.; Noufi, R N

Smooth, compact, and bright films of nickel and cobalt oxides were prepared from 0.5M acetate aqueous solutions and electrodeposited onto platinum and graphite electrodes. Oxygen evolution potentials in 1M NaOH at room temperature were about 150-170 mV lower on nickel(III) oxide (NiO(OH)) and cobalt(III) oxide (Co/sub 2/O/sub 3/) coated anodes than on bare anodes. Scanning electron micrographs of NiO(OH) deposits showed no morphological change after extensive electrolysis, and electrocatalytic activity was stable in long-term controlled-potential coulometric electrolysis. However, the electrocatalytic activity of Co/sub 2/O/sub 3/ showed initial decay followed by a fairly constant behavior. No visible change in the surface of the Co/sub 2/O/sub 3/ deposit was observed after extensive electrolysis.

• Research Organization: Solar Energy Research Institute, Golden, Colorado
• OSTI ID: 6286407
• Journal Information: J. Electrochem. Soc.; (United States), Journal Name: J. Electrochem. Soc.; (United States) Vol. 131:6; ISSN JESOA
• Country of Publication: United States
• Language: English

Related Subjects

08 HYDROGEN
080101* -- Hydrogen-- Production-- Electrolysis
CARBON
CATALYSTS
CATALYTIC EFFECTS
CHALCOGENIDES
CHEMICAL COATING
COBALT COMPOUNDS
COBALT OXIDES
DEPOSITION
ELECTROCATALYSTS
ELECTROCHEMICAL COATING
ELECTRODEPOSITION
ELECTRODES
ELECTROLYSIS
ELECTRON MICROSCOPY
ELEMENTAL MINERALS
ELEMENTS
GRAPHITE
LYSIS
METALS
MICROSCOPY
MINERALS
MORPHOLOGY
NICKEL COMPOUNDS
NICKEL OXIDES
NONMETALS
OXIDES
OXYGEN COMPOUNDS
PLATINUM
PLATINUM METALS
SCANNING ELECTRON MICROSCOPY
SURFACE COATING
TRANSITION ELEMENT COMPOUNDS
TRANSITION ELEMENTS