Citation: Yu Qing Qiao, Min Shou Zhao, Qiu Ming Zhang, Jing Zhai. Crystal structure and some dynamic performances of Ti_0.25V_0.34Dy_0.01Cr_0.1Ni_0.3 hydrogen storage electrode[J]. Chinese Chemical Letters, ;2011, 22(1): 93-96. doi: 10.1016/j.cclet.2010.09.008 shu

Crystal structure and some dynamic performances of Ti_0.25V_0.34Dy_0.01Cr_0.1Ni_0.3 hydrogen storage electrode

College of Environmental and Chemical Engineering, Yanshan University, Qinhuangdao 066004, China

Received Date: 5 May 2010

Fund Project: This work was financially supported by the Doctoral Foundation of Yanshan University (No.B330).

Crystal structure and some dynamic performances of Ti_0.25V_0.34Dy_0.01Cr_0.1Ni_0.3 hydrogen storage electrode alloy have been investigated by XRD, FESEM-EDS, TEM and EIS measurements.The result shows that the alloy is mainly composed of V-based solid solution phase with body-centered-cubic structure and mono-crystal Ni₃Ti phase with hexagonal structure (Space grope:P63/mmc), and it was first observed as TiNi-based secondary phase.The higher charge transfer resistance, higher apparent activation energy and lower hydrogen diffusion coefficient are reasons for the poor electrochemical activity of the dehydriding kinetics of Ti-V-Cr-Ni hydride alloy.
- Hydrogen storage electrode alloy,
- Ni-MH battery,
- V-Based solid solution
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