中国有色金属学报(英文版)
Transactions of Nonferrous Metals Society of China
| Vol. 17 Special 1 November 2007 |
Low-temperature performance and high-rate discharge capability ofAB5-type non-stoichiometric hydrogen storage alloy
（Energy Material and Technology Research Institute, General Research Institute for Nonferrous Metals,
Beijing 100088, China）
Abstract: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.
Key words: AB5-type hydrogen storage alloy; non-stoichiometry; low-temperature performance; high-rate discharge capability
