中國有色金屬學(xué)報(英文版)
Transactions of Nonferrous Metals Society of China
| Vol. 14 No. 2 April 2004 |
（School of Chemical Engineering and Environmental Science, Beijing Institute of Technology;
National Development Center of Hi-Tech Green Materials, Beijing 100081, China）
Abstract:Oxygen evolution causes a high inner pressure during charge and overcharge for MH/Ni battery, and an inappropriate eliminating way of the oxygen in the battery results in accumulation of heat. This is the main obstacle to develop and apply high capability and high power battery. How to reduce the ratio of the chemical catalysis rate to the electric catalysis rate in MH/Ni battery is considered as an urgent question. Iron phthalocyanine(FePc) was chosen as an electro-
chemical catalyst. The batteries were prepared by adding iron phthalocyanine with different dosages. The inner pressure, the capacity attenuation, the discharge voltage and capacity at high current of these three batteries were compared. The battery with 1 mg FePc in the negative electrode exhibits a good performance.
Key words: MH/Ni batteries; iron phthalocyanine; hydrogen storage alloys; electrochemical catalyst; inner pressure
