期刊
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
卷 35, 期 9, 页码 4342-4346出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.ijhydene.2010.02.029
关键词
Electrochemical discharge property; Synergistic effect; Hydrogen storage; Composite material; Cobalt
资金
- State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences
- Nanjing University of Technology
The AB(5) alloy and Co powders have been mixed at various weight ratios to form AB(5)-Co composite electrodes. The discharge properties such as discharge capacity, discharge plateau, and cycling stability are investigated by charge and discharge testing using Arbin battery testing equipment. Synergistic effects in the composite electrodes contribute to significant improvements of the discharge behavior. For instance, the composite AB(5)-25%Co electrode shows a high discharge capacity of 395.1 mAh/g, which is significantly higher than that of ABs or Co electrode, and good cycling stability. The discharge process is also characterized by electrochemical impedance spectroscopy. Moreover, the electrochemical discharge mechanism is discussed. (C) 2010 Professor T. Nejat Veziroglu. Published by Elsevier Ltd. All rights reserved.
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