Research of heat treatment of low-Co AB5 type hydrogen storage alloys for MH-Ni batteries
来源期刊：Rare Metals2003年第3期
论文作者：GUO Jinghong CHEN Demin LIU Guozhong YANG Ke and MA Jun) Institute, of Metal Research, Chinese Academy of Sciences, Shenyang , China) Suppo Battery (Shenyang) Co., Ltd, Shenyang , China
文章页码：175 - 178
摘 要：<正> The effects of low-Co AB5 type hydrogen storage alloys prepared by quenching and annealing on the performances of MH-Ni batteries were investigated, and the characteristics of the low-Co AB5 type hydrogen storage alloys were compared with those of the high-Co AB5 type hydrogen storage alloy as well. The results showed that the faster the cooling of the low-Co hydrogen storage alloy is, the better homogeneity of the chemical composition for the alloy and the longer cycle life of the battery are, but the electrochemical discharge capacity and high-rate discharge ability are reduced. The high-rate discharge ability and charge retention of MH-Ni batteries for the conventional as-cast annealed low-Co hydrogen storage alloy were superior to those for the rapidly quenched low-Co hydrogen storage alloy and the high-Co hydrogen storage alloy, but a little inferior in the cycle life.
GUO Jinghong CHEN Demin LIU Guozhong YANG Ke and MA Jun1) Institute, of Metal Research, Chinese Academy of Sciences, Shenyang 110015, China2) Suppo Battery (Shenyang) Co., Ltd, Shenyang 110015, China
摘 要：<正> The effects of low-Co AB5 type hydrogen storage alloys prepared by quenching and annealing on the performances of MH-Ni batteries were investigated, and the characteristics of the low-Co AB5 type hydrogen storage alloys were compared with those of the high-Co AB5 type hydrogen storage alloy as well. The results showed that the faster the cooling of the low-Co hydrogen storage alloy is, the better homogeneity of the chemical composition for the alloy and the longer cycle life of the battery are, but the electrochemical discharge capacity and high-rate discharge ability are reduced. The high-rate discharge ability and charge retention of MH-Ni batteries for the conventional as-cast annealed low-Co hydrogen storage alloy were superior to those for the rapidly quenched low-Co hydrogen storage alloy and the high-Co hydrogen storage alloy, but a little inferior in the cycle life.
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