The study of hydrogen sorption in palladium limited volume electrodes (Pd-LVE) - Part II. Basic solutions

The study of hydrogen and deuterium electrosorption into the palladium limi ted volume electrode (Pd-LVE) has been performed in basic solutions. The re sults are compared with data obtained earlier in an acidic solution. As in the acidic solution, the amount of electrosorbed hydrogen, H(D)/Pd, measure d electrochemically in a basic solution, depends significantly on the sweep rate in cyclic voltammetric experiments and also on the thickness of the L VE. Two different mechanisms of hydrogen desorption which operate in both b asic and acidic solutions, namely the electrochemical oxidation and the non -electrochemical recombination occurring simultaneously within the Pd-LVE, have been postulated. (C) 2000 Elsevier Science B.V. All rights reserved.