Tong Yanwei, Li Nali, Cui Xumei, Zhang Xuefeng. Investigation on the Structures and Electrochemical Properties of V2Ti0.5Cr0.5Ni1-xMnx（x=0.05～0.2）Hydrogen Storage Alloys[J]. IRON STEEL VANADIUM TITANIUM, 2019, 40(6): 38-42. doi: 10.7513/j.issn.1004-7638.2019.06.008
Citation:
Tong Yanwei, Li Nali, Cui Xumei, Zhang Xuefeng. Investigation on the Structures and Electrochemical Properties of V2Ti0.5Cr0.5Ni1-xMnx（x=0.05～0.2）Hydrogen Storage Alloys[J]. IRON STEEL VANADIUM TITANIUM, 2019, 40(6): 38-42. doi: 10.7513/j.issn.1004-7638.2019.06.008
Tong Yanwei, Li Nali, Cui Xumei, Zhang Xuefeng. Investigation on the Structures and Electrochemical Properties of V2Ti0.5Cr0.5Ni1-xMnx（x=0.05～0.2）Hydrogen Storage Alloys[J]. IRON STEEL VANADIUM TITANIUM, 2019, 40(6): 38-42. doi: 10.7513/j.issn.1004-7638.2019.06.008
Citation:
Tong Yanwei, Li Nali, Cui Xumei, Zhang Xuefeng. Investigation on the Structures and Electrochemical Properties of V2Ti0.5Cr0.5Ni1-xMnx（x=0.05～0.2）Hydrogen Storage Alloys[J]. IRON STEEL VANADIUM TITANIUM, 2019, 40(6): 38-42. doi: 10.7513/j.issn.1004-7638.2019.06.008
V2Ti0.5Cr0.5Ni1-xMnx（x=0.05～0.2）hydrogen storage alloys were prepared by vacuum induction arc-melting,and the microstructure and electrochemical properties of the alloys were investigated systematically.The results show that the alloys mainly consist of a V-based solid solution phase with a BCC structure and a TiNi-based secondary phase.The electrochemical tests indicate that with increase of Mn content in the alloys,the high-rate discharge capability,maximum discharge capacity and exchange current density of the alloys increase gradually.The maximum discharge capacity of 429.3 mAh/g,high-rate discharge capability of 55% and exchange current density of 52 mA/g can be obtained for the alloy at x=0.2,with the electrochemical kinetics improved but the cycling stability weakened.
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