研究了干法、湿法和湿法加添加剂三种制粉工艺对贮氢合金电化学性能的影响,结果表明:制粉工艺对合金粉末的表面形貌、粒度分布、氧含量均存在很大的影响,并影响到其电化学性能.当采用湿法制粉工艺时,贮氢合金电极的活化性能较干法制粉明显改善,若加入一定量的添加剂,活化性能进一步提高,第一次放电容量即达到278 mAh·g-1,第二次放电容量达到合金电极的稳定容量322 mAh·g-1.湿法制粉对贮氢合金电极的循环稳定性能有一定的负面影响,这可能与贮氢合金粉末表面的氧化和细粉相对含量较多有关,然而,当加入一定量的添加剂以后,贮氢合金电极的氧含量得到有效的控制,3C充放循环稳定寿命达到500次,与干法制粉工艺接近.
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