薄膜铝空气电池阴极的制备

Preparation of Cathode of Thin Film Aluminum Air Battery

将MnO_2、纳米TiO_2分别与La_2O_3、SrO、CeO_2按一定的质量比例混合组成复合催化剂。由复合催化剂所制空气阴极与铝阳极、KOH-聚丙烯酸凝胶电解质组装成薄膜铝空气电池。通过恒流放电测试电池性能,确定催化剂的性能和最佳组成。结果表明,MnO_2复合催化剂性能优于纳米TiO_2复合催化剂。最佳MnO_2复合催化剂为MnO_2-La_2O_3-SrO(5∶4∶2)。由其所制电池在放电电流60 mA时的容量密度与能量密度均最大,分别为1008.73 Ah/kg,1572.05 Wh/kg。

MnO2 and Nano-TiO2 were mixed with La2 cathode prepared with these catalysts was used to assemble O3, SrO and CeO2 to form catalysts, respectively. The air thin film aluminum air battery with Al-anode and KOH- polyacrylic acid gel electrolyte. The capabilities and best composition of the catalysts were determined by measuring the discharge performance of the battecy. The results showed that MnO2 -catalyst was better than TiO2 -catalyst. The best catalyst was MnO2-La203-SrO（5 ： 4 ： 2）. The capacity density and energy density of the battecy assembled with this catalyst was maximum, 1008.73 Ah/kg and 1982 Wh/kg, when the discharge current was 60 mA.