%0 Journal Article
%T Effect of Stoichiometry on Properties of Rare-Earth-Based Hydrogen Storage Alloy for Nickel-Metal Hydride Secondary Battery
%A Quan''an LI
%A Yungui CHEN
%A Mingjing TU
%A <br>
%J 材料科学技术学报
%D 2003
%I 
%X Effect of stoichiometry on microstructures, electrochemical properties and PCT characteristics of the alloys MI(Ni0.71Co0.15-Al0.06Mn0.08)x (MI=Lanthanum-rich Michmetal, x=4.6~5.2) have been investigated. The lattice constants a, c, and cellvolumes of non-stoichiometric alloys are bigger than those of the stoichiometric alloy. With the increasing stoichiometry x,the value of a decreases, and the value of c and cell volume increases except for those of the stoichiometric alloy; the plateaupressure of PCT curve, discharge capacity and cycling stability all increase. The alloy with x=5.2 shows the highest dischargecapacity and the best cycling stability among the studied alloys.
%K Hydrogen storage alloy
%K Metal hydride electrode
%K Rare earth
%K Electrochemical property
%K Stoichiometry<br>
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=84529CA2B2E519AC&jid=324DC3CAB22330DB19158AE0A9B7BFA5&aid=1BF9F7C49BF2595C&yid=D43C4A19B2EE3C0A&vid=2A8D03AD8076A2E3&iid=CA4FD0336C81A37A&sid=869807E2D7BED9EC&eid=08805F9252973BA4&journal_id=1005-0302&journal_name=材料科学技术学报&referenced_num=2&reference_num=11