La-Mg-Ni-Co系新型稀土储氢合金研究进展  

Progress in Research on La-Mg-Ni-Co Novel Hydrogen Storage Alloys

作　　者：刘晓芳[1] 李嵘峰[1] 潘崇超[2] 杨白[1] 于荣海[1] 

机构地区：[1]北京航空航天大学材料科学与工程学院,北京100191 [2]中国标准化研究院资环分院,北京100088

出　　处：《中国材料进展》2011年第9期26-31,56,共7页Materials China

基　　金：国家863重大项目(2011AA03A408);自然科学基金项目(51041010);国家重大基础研究计划项目(2010CB934602)

摘　　要：简要地总结了储氢合金的研发、应用现状以及未来的发展方向。结合作者在本领域的研究,重点介绍了La-Mg-Ni-Co系AB3型和A2B7型储氢合金。La-Mg-Ni-Co型储氢合金具有电化学容量高、易活化、动力学性能优异等特点,极有可能替代目前广泛使用AB5型稀土储氢合金。扼要地综述了AB3型和A2B7型储氢合金在元素替代、制备工艺、合金结构调控和性能改进等方面的研究进展,分析和指出了La-Mg-Ni-Co系储氢合金研究和应用需要解决的主要问题和可能的途径。This paper briefly summarizes the current status and future direction of hydrogen storage alloys in terms of development and applications. Associated with the research in the field of hydrogen storage alloys ourselves, the La-Mg-NiCo hydrogen storage alloys of AB3 type and A2 B7 type have been introduced. As negative electrode materials of nickel-metal hydride batteries, La-Mg-Ni-Co hydrogen storage alloys have received considerable attention due to their high electrochemical capacity, easy activation and excellent dynamics performance. We review the progress in research on the AB3- type and A2 B7-type La-Mg-Ni-Co alloy in aspects of the preparation, microstructure and element substitution. Simultaneously, the main issues and future directions are also addressed.

关 键 词：储氢合金 La—Mg-Ni—Co系 结构和表征 

分 类 号：TG139.7[一般工业技术—材料科学与工程]