Activity and Stability of Rare Earth-Based Hydride Alloys as Catalysts of Hydrogen Absorption-Oxidation Reactions
来源期刊：JOURNAL OF RARE EARTHS2004年第6期
论文作者：高学平 应桃开 胡伟康
Key words：inorganic chemistry; electrocatalyst; alkaline fuel cell; hydrogen oxidation; rare earths;
Abstract: Rare earth-based AB5-type hydrogen storage alloys as catalysts of hydrogen-diffusion electrodes for hydrogen absorption and oxidation reactions in alkaline fuel cells were investigated. It is demonstrated that the meta-hydride hydrogen-diffusion electrodes could be charged by hydrogen gas and electrochemically discharged at the same time to retain a stable oxidation potential for a long period. The catalytic activities and stability are almost comparable with a Pt catalyst on the active carbon. Further improvement of performances is expected via reduction of catalyst size into nanometers.
高学平1，应桃开2，胡伟康3
(1.Institute of New Energy Material Chemistry, Nankai University, Tianjin 300071,China;
2.College of Biology and Chemistry, Zhejiang Normal University, Jinhua 321004,China;
3.Department of Structural Chemistry, Arrhenius Laboratory, Stockholm University, S-106 91 Stockholm, Sweden)
Abstract:Rare earth-based AB5-type hydrogen storage alloys as catalysts of hydrogen-diffusion electrodes for hydrogen absorption and oxidation reactions in alkaline fuel cells were investigated. It is demonstrated that the meta-hydride hydrogen-diffusion electrodes could be charged by hydrogen gas and electrochemically discharged at the same time to retain a stable oxidation potential for a long period. The catalytic activities and stability are almost comparable with a Pt catalyst on the active carbon. Further improvement of performances is expected via reduction of catalyst size into nanometers.
Key words:inorganic chemistry; electrocatalyst; alkaline fuel cell; hydrogen oxidation; rare earths;
【全文内容正在添加中】
