Electrochemical properties of AB5 type La0.8Ce0.2Ni4Co0.5Mn0.3Al0.2 alloy for unified metal hydride fuel cell

Abstract

Metal hydride materials are widely applied for electrochemical energy storage. AB5 type alloys are the main anode material for Ni-MH batteries. Reversible hydrogen uptake and release provides good opportunities to use metal hydrides for alkaline fuel cell applications. Metal hydrides have good activation performance, high hydrogen sorption/desorption rates, catalytic activity in alkaline solution. Current work presents the first experimental results of AB5 type metal hydride electrodes, measured in a battery mode. The electrochemical properties of the prepared electrodes, such as activation performance, maximum discharge capacity, and high rate dischargeability are investigated in detail.