Impact of melt spinning on electrochemical hydrogen storage characteristics of Mg20Ni9M1 (M=Cu, Co) alloys

摘要：

　　The melt-spinning technique is used to fabricate the Mg20Ni9M1 (M=Cu,Co) alloys with nanocrystalline and amorphous structure.The microstructures of the as-spun alloys were characterized by XRD and TEM.The electrochemical hydrogen storage properties of the alloys were measured.The results show that the as-spun (M=Cu) alloys hold an entire nanocrystalline structure and small amount of amorphous phase is visible on the grain boundaries of the as-spun (M=Co) alloy.The discharge capacity and high rate discharge ability (HRD) of the alloys visibly grow with the rising of the spinning rate.The action of the melt spinning on the cycle stability of the alloys is associated with substitution element.For M=Cu,the capacity retaining rate (SN) evidently falls with the growing of the spinning rate; whereas for M=Co,it first declines and then augments.

关键词： Mg2Ni-type alloy melt-spinning element substitution electrochemical characteristics

作者: Yang-huan Zhang Hong-wei Shang Guo-fang Zhang Tai Yang Zhong-hui Hou Dong-liang Zhao

作者单位: Key Laboratory of Integrated Exploitation of Baiyun Obo Multi-Metal Resources, Inner Mongolia Univer Key Laboratory of Integrated Exploitation of Baiyun Obo Multi-Metal Resources, Inner Mongolia Univer Department of Functional Material Research, Central Iron and Steel Research Institute, Beijing 10008

会议类型: 国际会议

会议名称: 2012 International Conference on Chemical Engineering,Metallurgical Engineering and Metallic Materials(2012化工、冶金和金属材料国际会议(CMMM2012))

会议地点: 昆明

会议语种:英文

页码: 405-409

在线出版日期: 2012-10-12（万方平台首次上网日期，不代表论文的发表时间）