Low-Co rare-earth-based hydrogen storage alloy
Low-Co rare-earth-based hydrogen storage alloy作者机构：Sichuan Univ Dept Met Mat Chengdu 610065 Peoples R China
出 版 物：《中国有色金属学会会刊：英文版》 (Transactions of Nonferrous Metals Society of China)
年 卷 期：2000年第10卷第5期
页 面：660-665页
核心收录：
学科分类：08[工学] 080502[工学-材料学] 0805[工学-材料科学与工程（可授工学、理学学位）]
主 题：low Co hydrogen storage alloy metal hydride electrode rare earth alloy electrochemical property Ni MH battery
摘 要：On the basis of typical high Co MI(Lanthanum rich mischmetal) based hydrogen storage alloy, a series oflow Co or Co free alloys have been prepared by means of partial or full replacement of Co by a combination of other elements. The microstructures, p c T (pressure concentration temperature) characteristics and electrochemical propertiesunder different charge discharge conditions of the alloys have been investigated. Compared with the high Co alloy, thelow Co or Co free alloys have the lower hydrogen equilibrium pressure and discharge capacity, but have the nearly samehigh rate and high temperature discharge capability, and better charge discharge cycling stability. The reason is revealedby SEM, XPS and XRD results. \[
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