摘要
制得了含Mg的AB5型稀土合金,研究了合金添加Mg后合金电化学性能的变化.采用ICP,XRD对合金组成和结构进行分析,并通过EIS、CV、SEM和阳极极化曲线研究了电化学反应机理.
A small amount of MgNi2 was melted with AB5 alloys which were analyzed by ICP, XRD and SEM. EIS, CV, cyclic anodic polarization curves and charge/discharge measurements were carried out to study the electrochemical properties of alloy B and mechanism of hydrogen storage. The experimental results show that the battery with alloy B as MH electrode shows higher and wider voltage platform, better high-rate charge/discharge capability and stability compared to alloy A as MH electrode. The electrochemical investigation strongly indicates that the improved characteristics are the result of the increased electrochemical catalytic activity due to the increment of the conductive surface area, the reduction of the contact resistance between alloy particles and the increased corrosion resistance of alloys.
出处
《高等学校化学学报》
SCIE
EI
CAS
CSCD
北大核心
2007年第2期346-349,共4页
Chemical Journal of Chinese Universities
基金
国家自然科学基金(批准号:50571046
20573058)资助
