摘要
制备了化学计量比为RE2FeSb2(RE=Y,Dy,Er)新型Fe基合金电极。利用恒电流充放电方法测定了RE2FeSb2(RE=Y,Dy,Er)化合物的电化学性能,充放电循环表明RE2FeSb2(RE=Y,Dy,Er)具有2个明显放电平台;分别以3种RE2FeSb2(RE=Y,Dy,Er)合金电极为负极,以Ni(OH)2/NiOOH为正极构成的原电池,首次放电容量分别达到了715.8mAh/g,646.2mAh/g,673.6mAh/g,说明新型Fe基合金电极RE2FeSb2(RE=Y,Dy,Er)具有很大的放电容量。
Rare earth compounds RE2FeSb2（RE=Y,Dy,Er） were prepared and examined by X-ray powder diffraction technique.The electrochemical properties of the alloys were carried out by galvanostatic method.Electrochemical tests discovered that the alloys RE2FeSb2（RE=Y,Dy,Er） had two clear and wide discharge potential ranges.Furthermore,the first charge and discharge cycle showed that the discharge capacities of RE2FeSb2（RE=Y,Dy,Er） were 715.8,646.2,673.6mAh/g,respectively.The ferroalloy electrode of RE2FeSb2（RE=Y,Dy,Er） had latent superiority in electrochemical properties.
出处
《稀土》
EI
CAS
CSCD
北大核心
2011年第1期7-11,共5页
Chinese Rare Earths
基金
广西自然科学基本项目资助(0832027)
