Influence of surface treatments on microstructure and electrochemical properties of La_(0.7)Mg_(0.3)Ni_(2.4)Co_(0.6) hydrogen-storage alloy

摘要

The influence of the surface treatment by KBH_4 solution, alkaline solution, and alkaline solution containing KBH_4 on the surface structure and electrochemical properties of the La_(0.7)Mg_(0.3)Ni_(2.4)Co_(0.6) is investigated. It shows that all of the treatment methods improve the electrochemical properties of the La_(0.7)Mg_(0.3)Ni_(2.4)Co_(0.6) hydrogen-storage alloy. In all the methods, the treatment by alkaline solution containing KBH_4 shows the best overall electrochemical properties in this work.