V对贮氢合金微观结构和电化学性能的影响  

Effects of V on Microstructure and Electrochemical Properties Hydrogen Storage Alloys

作　　者：李克杰[1] 李全安[1] 李守英[1] 张清[1] 张兴渊[1] 文九巴[1] 

机构地区：[1]河南科技大学材料科学与工程学院,河南洛阳471003

出　　处：《稀有金属材料与工程》2007年第3期428-430,共3页Rare Metal Materials and Engineering

基　　金：河南省杰出青年科学基金(0312000200);河南省高校创新人才培养基金(豫高教[2002]129)

摘　　要：为了开发AB5型稀土系低Co贮氢合金,研究了加V低Co贮氢合金MlNi3.55Co0.3Mn0.4Al0.25Cu0.15Fe0.1Cr0.1Zn0.13Vx(x=0.02,0.05,0.08)V含量变化对放电容量、循环稳定性的影响机理。结果表明,加V低钴贮氢合金可以获得良好的综合电化学性能,但V的加入应严格控制。在本研究范围内,x=0.02的加V低钴贮氢合金具有最佳的综合电化学性能。In order to develop the ABs-type hydrogen storage alloys with multi-component alloying elements, the alloys M/Ni3.55Co0.3Mn0.4Al0.25Cu0.15Fe0.1Cr0.1Zn0.13Vx（x=0.02, 0.05, 0.08） were prepared, and their discharge capacity, cycle stability were tested and analyzed. The results show that the low-Co content hydrogen storage alloys with additive V has good electrochemical properties. It is found that the electrochemical properties of low-Co content hydrogen storage alloys with x=0.02 are better than those of the other alloys. The effect of V on the electrochemical properties is related to the change of the microstructures of the alloys.

关 键 词：贮氢合金 电化学性能 低钴合金 

分 类 号：TG139.7[一般工业技术—材料科学与工程]