THE DECOMPOSITION OF ELECTROCHEMICALLY LOADED PALLADIUM HYDRIDE - A THERMAL-ANALYSIS STUDY

Palladium samples electrochemically loaded with hydrogen have been exa mined in terms of their desorption characteristics using the thermal a nalysis methods of differential scanning calorimetry (DSC) and thermog ravimetric analysis (TGA). The temperature of maximum desorption is sh own to depend on the H:Pd ratio n when loading was carried out at curr ent densities i(D) less than or equal to 2 mA cm (-2). The molar desor ption enthalpy Delta H-M, derived from the DSC and TGA data as a funct ion of n (0.48-0.9), was found to be in good agreement with literature values at lower n but deviated at higher n.