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	MmB_5贮氢合金的结构和性能; Crystal Structure and Hydrogen Absorption Properties of MmB(5) Alloys
	张玉芬 ; 侯勇 ; 王健 ; 宏存茂
	1994
关键词	金属氢化物 电极材料 X-射线衍射 压力组成等温线 Metalhydride Electrode materials X-ray diffraction P-C Isotherms
英文摘要	Pressure composition isotherms, crystal structures and electrochemical capacities of MmB5 alloy-hydrogen systems have been investigated, where Mm represents La-rich mischmetals and B5 take a composition of Ni3.8Co0.5Mn0.4Al0.3. All these multicomponent alloys belong to CaCu5-type hexagonal crystal s...; Pressure composition isotherms, crystal structures and electrochemical capacities of MmB(5) alloy-hydrogen systems have been investigated, where Mm represents La-rich mischmetals and B-5 take a composition of Ni3.NCo0.5Mn0.4Al0.3. All these multicomponent alloys belong to CaCu5-type hexagonal crystal structure, The volume of unit cell (or say, the interstitial hole size) becomes larger with increasing of La content and decreasing of Cc content in Mm. The larger interstitial hole leads to a decrease of dissociation pressure of their hydride, hence improves the stability of MmB(5)H(6) and the electrochemical capacity of the MmB(5) alloy. The expansion ratio of the MmB(5) for hydrogen absorption was obviously smaller than that of LaNi5 alloy. For MmB(5) alloy, especially with high content of La in Mm, a lot of properties for the application in MH/Ni battery, such as against pulverization, long cycle lifetime etc can be promoted.; http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000207589400013&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=8e1609b174ce4e31116a60747a720701 ; SCI(E); 中文核心期刊要目总览(PKU); 中国科学引文数据库(CSCD); 0; 07; 644-647; 10
语种	中文
出处	SCI ; 知网
出版者	物理化学学报
内容类型	其他
源URL	[http://hdl.handle.net/20.500.11897/78636]
专题	化学与分子工程学院
推荐引用方式 GB/T 7714	张玉芬,侯勇,王健,等. MmB_5贮氢合金的结构和性能, Crystal Structure and Hydrogen Absorption Properties of MmB(5) Alloys. 1994-01-01.

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