南京工业大学学报（自然科学版）2011，Vol.33Issue(2)：12-15,37,5.DOI:10.3969/j.issn.1671-7627.2011.02.003
烧结温度对La-Mg-Ni系储氢合金的相结构与电化学性能的影响
Effects of sintering temperature on microstructure and electrochemical characteristics of La-Mg-Ni system hydrogen storage alloys
摘要
Abstract
The microstructure and electrochemical characteristics of La0.7 Mg0.3 Ni2.8 Co0.5 hydrogen storage alloy were investigated prepared by powder sintering method at 1 173 and 1 273 K for 12 h.Results showed that the alloy consisted of ( La, Mg) Ni3 and LaNi5 phases, besides a bit amount of MgNi2 phase at 1 173 K, but MgNi2 phase vanished at 1 273 K. It indicated that the alloy was synthesized at a higher temperature. The maximum discharge capacity, cycle stability, high rate dischargeability, and electrochemical kinetics were improved with the increasing of the powder sintering temperature.关键词
储氢合金/金属氢化物电极/粉末烧结/电化学性能Key words
hydrogen storage alloy/ metal hydride electrode/ powder sintering/ electrochemical property分类
化学化工引用本文复制引用
董振伟,马立群,丁毅,吴耀明,沈晓冬,王立民..烧结温度对La-Mg-Ni系储氢合金的相结构与电化学性能的影响[J].南京工业大学学报（自然科学版）,2011,33(2):12-15,37,5.基金项目
国家高技术研究发展计划(863计划)资助项目(2007AA03Z228) （863计划）
中国科学院与吉林省科学技术联合资助项目(2008syhz0008) （2008syhz0008）
中国科学院创新研究基金资助项目(20921002) （20921002）
稀土资源利用重点实验室开放项目 （）
