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Citation: Chen Weixiang, Tang Zhiyuan, Liu Zhaolin, Guo Hetong, Chen Changpin. The Sealed Formation and Performances of MH-Ni Batteries[J]. Chinese Journal of Applied Chemistry, ;1997, 14(4): 29-32. shu

The Sealed Formation and Performances of MH-Ni Batteries

1.
1. Department of Materials Science and Engineering, Zhejiang University, Hangzhou 310027;
2.
2. Department of Applied Chemistry, Tianjin University, Tianjin

Received Date: 31 December 1996
Available Online: 5 May 1997
Fund Project:

The performances such as the discharge capacity, activation, electrocatalytic activity and high-rate dischargeability of MH electrodes were improved by the chemical reduction in an alkaline solution containing a reductant KBH₄. MH-Ni batteries assembled with KBH₄-treated MH electrodes as negative electrodes were sealed formated. The performances of the batteries by sealed formation were superior to that of the batteries by open formation. The capacity approached 1150 mAh. High-rate dischargeability (at 5 C) was above 80% and the capacity at -18℃ (0.2 C) was 90% of that at room tempearture (0.2 C). The cyclic life of the MH-Ni battery at 1 C (100% DOD) increased from 100 cycles to 200 cycles and more.
- metal hydride electrode,
- chemical reduction,
- MH-Ni battery,
- formation,
- performance
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