Calorimetry of the Pd + D Codeposition

Thermal activities associated with electrochemical compression of deuterium produced on electrodes prepared by Pd + D codeposition are discussed. Three cases are considered: activities during and shortly after commencement of current flow, those observed during runs of several days duration, and surface temperature distribution recorded by infrared scanning. Experimental results show excellent reproducibility, high-power outputs, and the development of thermal instabilities resulting in the formation of local hot spots.