Accession Number : AD0268861

Title :   HYDROGEN OVERVOLTAGE ON POROUS IRON AND IRON-NICKEL CATHODES IN ELECTROLYSIS OF A SODIUM CHLORIDE SOLUTION,

Corporate Author : FOREIGN TECHNOLOGY DIV WRIGHT-PATTERSON AFB OHIO

Personal Author(s) : Barmashenko ,I. B. ; Gorbachevskaya,L. A.

Report Date : 14 DEC 1961

Pagination or Media Count : 15

Abstract : Hydrogen overvoltage (eta H2) was investigated on smooth Fe and porous, annealed and unannealed Fe and Fc-Ni electrodes during electrolysis of a NaCl solution in the electrolyte with a stationary electrolyte at 20 to 80 C and current densities of 100 to 5000 amp/sq. m. Eta H2 on the porous electrodes increased as the current density increased. On porous annealed electrodes, eta H2 is somewhat higher than on unannealed and less than on smooth ones by 0.15 to 0.2 v. On porous annealed Fe-Ni electrodes, eta H2 is less than ona smooth one by 0.4 v. The temperature coefficient of eta H2 is negative at various current densities, positive for porous Fe electrodes at 60 to 80 C and higher than for smooth ones; with a increase in current density it is increased, while at increased temperature it is somewhat lowered. The results of experiments n measuring eta H2 on Fe-Ni porous electrodes with flow-through and stationary electrolytes are in good agreement. Cathodes, made by powder metallurgy methods, of powered Fe, 3 to 4 mm thick and with a pressed layer of a mixer of powders (Ni 80 - Fe 20%, 1 to 2 mm thick), were recommended for industrial electrolysis of NaCl and NaOH solutions. (Author)

Descriptors :   *CATHODES(ELECTROLYTIC CELL), *CHLORIDES, *ELECTROLYSIS, *POROUS METALS, *SODIUM COMPOUNDS, ELECTRODES, HYDROGEN, HYDROXIDES, IRON, IRON ALLOYS, NICKEL ALLOYS, SOLUTIONS(MIXTURES), TEST METHODS, USSR, VOLTAGE

Distribution Statement : APPROVED FOR PUBLIC RELEASE