利用超声浸渍技术在10 g·L-1Ce(NO3)3溶液中成功制得含有铈化合物的锌基复合粉,探讨了铈化合物在锌粉基体上的形成机制,并研究了锌基复合粉中铈化合物对锌电极的循环放电性能的影响.通过扫描电镜(SEM)、能谱分析(EDS)、X射线光电子能谱(XPS)和充放电循环测试对锌基复合粉进行表征与性能分析.结果表明:由Ce(OH)3/Ce(OH)4和Ce2O3/CeO2组成的铈化合物以颗粒形式良好地分散在锌粉基体上,用这种锌基复合粉作为模拟锌银电池的负极材料,其锌电极的容量衰减得到明显抑制,放电容量和循环寿命得到显著提高,尤其是其锌电极在50周期的放电容量仍可达到231.4 mAh·g-1,表明在锌粉基体上形成的铈化合物可以改善锌电极的电化学性能.
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