一种用作具有高放电容量的金属氢化物电极的钛钒基体心立方相合金。

A Ti-V-based bcc phase alloy for use as metal hydride electrode with high discharge capacity.

作者信息

Yu X B, Wu Z, Xia B J, Xu N X

机构信息

The State Key Laboratory of Functional Materials for Informatics, Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences, Shanghai 200050, P. R. China.

出版信息

J Chem Phys. 2004 Jul 8;121(2):987-90. doi: 10.1063/1.1758937.

DOI:10.1063/1.1758937

PMID:15260631

Abstract

The electrochemical characteristics of single bcc phase Ti-30V-15Cr-15Mn alloy were investigated. It was demonstrated that the single bcc phase alloy has high electrochemical discharge performance at high temperature. Its discharge capacity is closely related with temperature and discharge current. The first discharge capacities of 580-814 mAh g(-1) of the alloy powder were obtained at discharge current of 45-10 mA g(-1) in 6 M KOH solution at 353 K. Although the electrochemical cycle life of the alloy is unsatisfactory at present, it opens up prospects for developing a new hydrogen storage alloy with high hydrogen capacity for use as high performance metal hydride electrodes in rechargeable Ni-MH battery.

摘要

研究了单一体心立方相Ti-30V-15Cr-15Mn合金的电化学特性。结果表明，该单一体心立方相合金在高温下具有较高的电化学放电性能。其放电容量与温度和放电电流密切相关。在353K的6M KOH溶液中，当放电电流为45-10mA g(-1)时，合金粉末的首次放电容量为580-814 mAh g(-1)。虽然目前该合金的电化学循环寿命并不理想，但它为开发一种具有高储氢容量的新型储氢合金开辟了前景，该合金可用于可充电镍氢电池中作为高性能金属氢化物电极。