TY - JOUR
T1 - Degradation mechanisms of Ti-V-based multiphase hydrogen storage alloy electrode
AU - Zhu, Yunfeng
AU - Pan, Hongge
AU - Gao, Mingxia
AU - Liu, Yongfeng
AU - Li, Rui
AU - Lei, Yongquan
AU - Wang, Qidong
PY - 2004/3
Y1 - 2004/3
N2 - The degradation mechanisms of the Ti-V-based multiphase hydrogen storage electrode alloy (Ti0.8Zr0.2)(V0.533Mn 0.107Cr0.16Ni0.2)2 during electrochemical cycling in alkaline electrolyte have been studied systematically by using XRD, SEM, XPS, AES and EIS measurements. The results show that the irreversible hydrogen absorbed in the alloy increases with cycling. The pulverization and oxidation/corrosion of the alloy during cycling are two main factors responsible for the fast degradation of the electrode. It was found that a passive Ti oxide film formed on the alloy surface, leading to an increase in charge transfer resistance on the alloy surface and a decrease in exchange current density I0.
AB - The degradation mechanisms of the Ti-V-based multiphase hydrogen storage electrode alloy (Ti0.8Zr0.2)(V0.533Mn 0.107Cr0.16Ni0.2)2 during electrochemical cycling in alkaline electrolyte have been studied systematically by using XRD, SEM, XPS, AES and EIS measurements. The results show that the irreversible hydrogen absorbed in the alloy increases with cycling. The pulverization and oxidation/corrosion of the alloy during cycling are two main factors responsible for the fast degradation of the electrode. It was found that a passive Ti oxide film formed on the alloy surface, leading to an increase in charge transfer resistance on the alloy surface and a decrease in exchange current density I0.
KW - Degradation mechanisms
KW - Electrochemical reactions
KW - Electrode materials
KW - Hydrogen absorbing materials
KW - X-ray diffraction
UR - http://www.scopus.com/inward/record.url?scp=0345327606&partnerID=8YFLogxK
U2 - 10.1016/S0360-3199(03)00153-8
DO - 10.1016/S0360-3199(03)00153-8
M3 - 文章
AN - SCOPUS:0345327606
SN - 0360-3199
VL - 29
SP - 313
EP - 318
JO - International Journal of Hydrogen Energy
JF - International Journal of Hydrogen Energy
IS - 3
ER -
