机构地区: 四川大学材料科学与工程学院
出 处: 《功能材料》 2009年第10期1654-1655,1659,共3页
摘 要: 研究了LaNi4-xFeCrx(x=0.2、0.4、0.6、0.8、1.0)合金中Cr替代Ni对显微组织及电化学性能的影响。研究表明,Cr的加入均使合金析出第二相,降低电化学放电容量,提高循环稳定性。合金的高倍率放电性能随x增加先增大后缓慢下降。 The effect of substitution of Cr for Ni on the microstructure and electrochemical properties of LaNi4-xFeCrx(x=0. 2,0. 4,0. 6,0. 8,1. 0) had been studied systematically. With the increase of Cr content, the second phase precipitated increases, and the electrochemical discharge capacity decreases. As :r value increases,the cycle stability is improved, whereas the high rate discharge-ability first increases when x≤0.4 and then slowly decreases.