摘要
作为镍氢电池负极材料的储氢合金是制约镍氢电池能量密度的关键之一,为了提高镍氢电池的能量密度,科研工作者开发出了具有超晶格结构的La-Mg-Ni系高容量型储氢合金。但是在制备该类型合金时存在组分难以控制、工艺过程复杂以及安全隐患等问题。近年来,La-Y-Ni系储氢合金材料由于其容量高且易制备而受到了人们的广泛关注。本文总结并分析了La-Y-Ni储氢合金材料的组织结构、电化学性能以及PCT平台特性,探讨了存在的问题,并对下一步的工作方向进行了展望。
As the negative electrode material,hydrogen storage alloy is one ofthe key factors restricting the energy density of thenickel-metal hydride batteries.In order to increase the energy density,a high-capacity La-Mg-Ni hydrogen storage alloy with superlattice structure has been developed.However,there are some problems in the preparation of these alloys,such as being difficult to control the components,complicated processand hidden danger.In recent years,La-Y-Ni hydrogen storage alloy materials have received widespread attention due to theirhigh capacity and easy preparation.In this paper,the crystal structure,electrochemical properties and PCT platform characteristics of La-Y-Ni hydrogen storage alloy materials are summarized and analyzed.Then the problems existing in the La-Y-Ni hydrogen storage alloys are discussed,and the future work forthis type of alloy is prospected.
作者
徐津
闫慧忠
王利
李宝犬
熊玮
张旭
XU Jin;YAN Hui-zhong;WANG Li;LI Bao-quan;XIONG Wei;ZHANG Xu(State Key Laboratory of Baiyunobo Rare Earth Resource Researches and Comprehensive Utilization,Baotou Research Institute of Rare Earths,Baotou 014030,China;National Engineering Research Centre of Rare Earth Metallurgy and Function Materials,Baotou 014030,China)
出处
《稀土》
EI
CAS
CSCD
北大核心
2020年第5期114-122,共9页
Chinese Rare Earths
基金
内蒙古自然科学基金项目(2018MS05016)。
关键词
La-Y-Ni储氢合金
组织结构
电化学性能
PCT特性
La-Y-Ni hydrogen storage alloys
crystal structure
electrochemical performance
PCT platform characteristics
