氧电极催化剂La_(0.6)Ca_(0.4)CoO_3的合成及性能  

Synthesis and performance of air cathode catalyst La_(0.6)Ca_(0.4)CoO_3

作　　者：郭瑞敏[1] 杨占红[1] 苏赵辉[1] 

机构地区：[1]中南大学化学化工学院,湖南长沙410083

出　　处：《电池》2007年第3期214-216,共3页Battery Bimonthly

摘　　要：用溶胶-凝胶法合成了氧电极催化剂La0.6Ca0.4CoO3,通过热重(TG)分析确定了干凝胶的焙烧温度。利用X射线衍射、电化学测试等研究了pH值、柠檬酸用量对催化剂性能的影响。制备La0.6Ca0.4CoO3的最佳工艺条件是:pH=3.0,n(柠檬酸)∶n(M)=2∶1(M为总金属离子)。焙烧条件为:700℃,2 h。Air cathode catalyst La0.6Ca0.4CoO3 was prepared by sol-gel method, the calcining temperature of dry gel was determined by TG analysis. The effects of pH value, citric acid amount on the performance of catalyst were studied by XRD and electrochemical test. The optimum conditions were pH = 3.0, n （citric acid） ： n （ M ） = 2 ： 1 （ M as total metal ion）, calcining condition was 700 ℃, 2 h.

关 键 词：氧电极 钙钛矿型 La0.6Ca0.4CoO3 溶胶-凝胶法 

分 类 号：TM911.47[电气工程—电力电子与电力传动]