Abstract

The hydrogen oxidation reaction in (62+38)mol% (Li+K)CO3 at 650°C has been studied at Au, Ag, Cu, Pt, Ir, Pd, Ni, Co, and Fe electrodes by using cyclic voltammetry, ac impedance and potential-step methods. Impedance data were analyzed by computer fitting with an equivalent circuit taking into account the hydrogen adsorption. The exchange current density increased with the following series under the gas composition of P(H2)/P(CO2)/P(H2O)= 0.691/0.236/0.013; Pd(118.9 mA/cm2)>Ni>Pt>Ir>Au>Ag (16.1 mA/cm2). The effect of the nature of metals on the electrode kinetics is discussed.

Full Text
Paper version not known

Talk to us

Join us for a 30 min session where you can share your feedback and ask us any queries you have

Schedule a call