Resource recovery of nickel-metal hydride battery waste ; Application to biogas reforming catalyst

Abstract

Ni-based compounds recovered from nickel-metal hydride battery wastes were examined as biogas reforming catalysts at 800 ºC. The exhaust gas was analyzed by gas-chromatography. When Ni-based compounds/BaTiO3 catalysts were used, CH4 and CO2 conversion increased with reaction time, and carbon deposited on the catalyst was very low. These results indicate that the Ni-based compounds/BaTiO3 catalysts have resistance to coking.