NOUFERROUS METALLURGICAL EQUIPMENT

In this paper, the HOR anodic polarization behavior of Raney-nickel GDE at different current densities is analyzed. The DCIR and EIS analyses show that the ohmic drop and electrochemical polarization together constitute the potential loss at the beginning of the discharge of Raney-nickel GDE; the relaxation analysis shows that the concentration polarization rules the potential loss during the discharge of Raney-nickel GDE. The above “current-HOR polarization” relationship is helpful for the design, fabrication and application of Ni-based GDE in alkaline fuel cells, anionic membrane fuel cells and Ni-H2 gas cells.