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采用化学镀铜法对储氢合金进行表面包覆,用包覆粉制成的储氢电极,其放电容量、大电流充放电性能均得到了改善,1C全充放循环100次,容量仅下降5%;未包覆粉制成的电极,其容量相应地损失了21%。用此包覆粉组装成Ni/MH电池,1C/02C达到95%,1C全充放循环200周期,容量衰减20%。此外,初步探讨了储氢合金表面包铜的得与失。
The surface of hydrogen storage alloy was coated with electroless copper plating. The hydrogen storage electrode made of coated powder had improved discharge capacity and high current charge-discharge performance. The charge-discharge cycle of 1C was 100 times and the capacity decreased only 5%; uncoated powder made of the electrode, the corresponding loss of capacity of 21%. With this coating powder assembled into Ni / MH batteries, 1C / 0 2C reached 95%, 1C full charge and discharge cycles of 200 cycles, the capacity of 20% attenuation. In addition, the gain and loss of copper clad on hydrogen storage alloy were discussed.