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采用物理充氢方法活化贮氢合金， 并以此方法进行氢电极的预充电。考察了压力， 温度对合金活化的影响， 得出氢化物形成的最低阈值温度为５０ ℃。用析气法评价活化效果， 确定最佳活化条件为压力１ ．６ ＭＰａ 及温度１００ ℃， 经此条件活化的电极， 充电效率是９７ ．８７ ％ 。研究了物理方法给贮氢电极预充电的条件及预充电量衰减规律， 结果显示此法能提供较宽的工艺操作范围， 在６０ ℃和０ ．８ ＭＰａ氢气压强下进行贮氢电极的预充电， 能满足控制预充量的要求， 这对实现Ｎｉ／ ＭＨ 电池的封口化成有重要的实际意义。
The physical hydrogenation method is used to activate the hydrogen storage alloy, and the hydrogen electrode is pre-charged in this way. The effect of pressure and temperature on the activation of the alloy was investigated. The lowest threshold temperature of hydride formation was 50 ℃. The gas evolution method was used to evaluate the activation effect and the optimal activation condition was determined as pressure 1. 6 MPa and temperature 100 ℃, activated by this condition of the electrode, charging efficiency is 97. 87%. The preconditioning conditions of hydrogen storage electrode and the decay law of precharge capacity were studied by physical method. The results show that this method can provide a wide range of process operation at 60 ℃ and 0 ℃. Hydrogen pressure of 8 MPa hydrogen precharge electrodes, to meet the requirements of pre-charge control, which is to achieve Ni / MH battery sealing has important practical significance.