Macrokinetics of H/sub 2/O/sub 2/ electroreduction in a capillary gap at electrodes with rough surface

Journal Article · Wed Aug 01 00:00:00 EDT 1984 · Sov. Electrochem. (Engl. Transl.); (United States)

OSTI ID:5473461

Koshel', N D; Cherednichenko, A S

It is expected that the structure of the electrode surface which regulates mass transport conditions will have an important effect on the ratio between the rates of H/sub 2/O/sub 2/ electroreduction and heterogeneous decomposition. To elucidate the mechanisms of this surface effect the authors investigated nickel foil electrodes with corrugated triangular profile (with a height of 350 micrometers) which were activated with silver, platinum, and palladium. Three types of electrode were used: with a smooth surface (Ag, Pd); with a microscopically rough surface obtained either by straightforward deposition of highly disperse catalyst black (Pt) or by depositing the catalyst (Ag) onto a precoat of inactive nickel black, and with a macroscopically rough surface obtained by the electrolysis of carbonyl nickel suspension in a nickel plating bath and subsequent activation (Ag).

• Research Organization: F.E. Dzerzhinskii Chemical Engineering Institute, Dnepropetrovsk
• OSTI ID: 5473461
• Journal Information: Sov. Electrochem. (Engl. Transl.); (United States), Vol. 20:2
• Country of Publication: United States
• Language: English

Related Subjects

08 HYDROGEN
37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
HYDROGEN PEROXIDE
ELECTROLYSIS
HETEROGENEOUS CATALYSIS
HYDROGEN PRODUCTION
CATALYTIC EFFECTS
CHEMICAL ACTIVATION
CHEMICAL REACTION KINETICS
CURRENT DENSITY
ELECTRODES
MASS TRANSFER
NICKEL
PALLADIUM
PLATINUM
REDUCTION
ROUGHNESS
SILVER
CATALYSIS
CHEMICAL REACTIONS
ELEMENTS
HYDROGEN COMPOUNDS
KINETICS
LYSIS
METALS
OXYGEN COMPOUNDS
PEROXIDES
PLATINUM METALS
REACTION KINETICS
SURFACE PROPERTIES
TRANSITION ELEMENTS
080101* - Hydrogen- Production- Electrolysis
400400 - Electrochemistry