摘要
Low-temperature performance and high-rate discharge capability of AB5-type non-stoichiometric hydrogen storage are studied. X-ray diffraction(XRD),pressure-composition-temperature(PCT) curves and electrochemical impedance spectroscopy(EIS) are applied to characterize the electrochemical properties of ABx(x=4.8,4.9,5.0,5.1,5.2) alloys. The results show that the non-stoichiometric alloys exhibit better electrochemical properties compared with that of the AB5 alloy.
Low-temperature performance and high-rate discharge capability of AB5-type non-stoichiometric hydrogen storage are studied. X-ray diffraction(XRD), pressure-composition-temperature(PCT) curves and electrochemical impedance spectroscopy(EIS) are applied to characterize the electrochemical properties of ABx (x=4.8, 4.9, 5.0, 5.1, 5.2) alloys. The results show that the non-stoichiometric alloys exhibit better electrochemical properties compared with that of the AB5 alloy.
出处
《中国有色金属学会会刊:英文版》
CSCD
2007年第A02期978-984,共7页
Transactions of Nonferrous Metals Society of China
基金
Project(2006AA11A151) supported by the National Hi-Tech Research and Development Program of China
关键词
储氢合金
化学计量学
低温性能
放电容量
AB5-type hydrogen storage alloy
non-stoichiometry
low-temperature performance
high-rate discharge capability