Abstract
Amorphous and crystalline MlNi 1.79, MlNi 2.52 and MlNi 3.44 films were prepared by means of ion beam sputtering. Electrochemical properties such as discharge capacity, discharge capability and charge-discharge cycle life were examined. The results snowed that the crystalline films had higher discharge capacity than the corresponding amorphous counterparts. The high-rate dischargeability of amorphous samples was superior to the crystalline counterparts. This could be ascribed to high electrocatalytic activity of amorphous electrodes. In addition, the amorphous film electrode also exhibited longer cycle life and excellent antipulverizability.
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