Hydrogen storage and cyclic properties of V60Ti(21.4+x)Cr(6.6−x)Fe12 (0 ≤ x ≤ 3) alloys
Hydrogen storage and cyclic properties of V60Ti(21.4+x)Cr(6.6−x)Fe12 (0 ≤ x ≤ 3) alloys
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DOI：
10.1016/j.ijhydene.2010.01.017
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发表时间：
2010-08
影响因子：
7.2
通讯作者：
Chaoling Wu;Xin Zheng;Yun-gui Chen;Mingda Tao;Gui-Zhong Tong;Jingjing Zhou
中科院分区：
文献类型：
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作者：
Chaoling Wu;Xin Zheng;Yun-gui Chen;Mingda Tao;Gui-Zhong Tong;Jingjing Zhou
系统研究了V60Ti（21.4+x）Cr（6.6−x）Fe 12（0 ≤ x ≤ 3）合金的贮氢性能和循环性能。所有合金均由单一的BCC相组成，具有良好的活化性能。V60Ti22.4Cr5.6Fe12合金在平台压力为0.061MPa时表现出最高的脱附量，为2.12wt%。在吸放氢循环试验中，V60Ti22. 4Cr5. 6Fe12合金的放氢量和微观应变均随循环次数的增加呈指数关系，表明在吸放氢循环过程中产生并积累的微观应变可能导致放氢量的降低。
Hydrogen storage and cyclic properties of V60Ti(21.4+x)Cr(6.6−x)Fe12(0 ≤ x ≤ 3) alloys were investigated systematically. All alloys were composed of single BCC phase and exhibited good activation performance. V60Ti22.4Cr5.6Fe12showed the highest desorption capacity of 2.12 wt% with the plateau pressure of 0.061 MPa. In the absorption–desorption cycle tests, both the hydrogen desorption capacity and the micro-strain of V60Ti22.4Cr5.6Fe12alloy showed exponential relationship with the increase of cycle numbers, which indicated that the micro-strain induced and thereafter accumulated during the absorption–desorption cycles might lead to the decrease of the desorption capacity.