Effect of KOH pretreatment for LaNi2.5Co2.5 on electrochemical hydrogen absorption rate and cyclic capacity.

Abstract

Previously, we reported the improvement of the initial activation rate of LaNi2.5Co2.5 by KOH pretreatment for electrochemical reaction. Hydrogen absorption rate is very sensitive to the sample preparation . In this study, we prepared the pellet form and powder of the LaNi2 .5Co2.5 pretreated with KOH. In each form, we examined the effects of the pretreatment on cyclic capacity and hydrogen absorption rate.