ENERGY-BALANCE OF D2O ELECTROLYSIS WITH A PALLADIUM CATHODE .1. THEORETICAL RELATIONS

On the basis of reliable thermochemical data, the relations for the calculation of the thermoneutral voltage, Etn, of the D2O electrolysis from an approx. 0.1 M LiOD+D2O solution with a Pd cathode with PdDn formation have been derived for stationary and non-stationary courses of electrolysis, as a function of reaction temperature, total pressure and current efficiencies of 02(g) and D2(g) evolution. Due to the lack of thermochemical data for PdDn formation with n > 0.8, the accuracy of the calculated thermoneutral voltage with PdDn formation under non-stationary conditions is lower than for the case of stationary electrolysis. © 1990.