摘要
在V3TiNi0.56储氢电池合金中添加0.204%纳米铜颗粒和0.102%稀土镓,并进行该汽车用新型钒基储氢电池合金的显微组织、物相组成及电池的电化学性能测试。结果表明,该新型储氢电池合金由V基固溶体相、TiNi相组成,具有明显的氧化峰和还原峰;V3TiNi0.56钒基储氢电池和新型钒基储氢电池,在充放电循环6次后的放电容量分别衰减了98.67%和9.62%,说明新型钒基储氢电池循环稳定性得到显著提高。
A novel V-based hydrogen storage alloy for automotive battery was prepared by adding 0.204%nano-Cu particles and 0.102% Ga into the V3TiNi0.56 alloy,and the microstructure,phase composition of the novel alloy and the electrochemical properties of power battery assembled by the novel alloy were investigated. The results show that the novel alloy is consisted of V-based solid solution phase and TiNi phase,with significant oxidation and reduction peaks in the cyclic voltammetric characteristics curve;The discharge capacity attenuation of the battery by the novel alloy after 6 times of charge-discharge cycles decreases to 9.62% in comparison to that of 98.67% for the battery by V3TiNi0.56 alloy,which means significant improvement for the cycle stability of the battery.
出处
《钢铁钒钛》
CAS
北大核心
2014年第4期28-31,共4页
Iron Steel Vanadium Titanium
基金
2013年度教育部人文社会科学研究规划基金项目(13YJA880009)
