掺杂LaNiO_3型双功能氧电极的研究——溶胶-凝胶制备方法  

Doped LaNiO_3 Perovskite Oxide Bi-Functional Oxygen Electrodes -Sol-Gel Preparation Method

作　　者：宋世栋[1] 唐致远[1] 潘丽珠[1] 南俊民[2] 

机构地区：[1]天津大学化工学院,天津300072 [2]华南师范大学化学系,广州510631

出　　处：《天津大学学报（自然科学与工程技术版）》2005年第9期774-779,共6页Journal of Tianjin University：Science and Technology

基　　金：教育部博士点重点基金资助项目(20273047).

摘　　要：为了得到高性能的双效氧电极,研究了钙钛矿型掺杂LaNiO3电催化剂的溶胶-凝胶制备方法,通过热重- 差热分析、红外分析、XRD分析以及催化剂的粒径分布分析等手段,探讨了pH值、柠檬酸用量以及焙烧制度对催化剂制备的影响.结果表明,制备LaNiO3的溶胶-凝胶法的最佳工艺条件是:柠檬酸的用量为金属离子总物质的量的1.5倍;pH值调节为9;焙烧制度为在750℃下焙烧2 h.For developing bi-functional oxygen electrodes with high catalytic properties, the sol-gel preparation method of doped LaNiO3 perovskite electrocatalysts was investigated. The effects of pH value, citric acid dosage and calcinations process on sol-gel method were studied by means of TGA-DTA analysis,infrared spectrum analysis, XRD spectrum analysis and particle distribution analysis. The results show that the optimum conditions are ： pH value adjusted to 9 ;the ratio of the molar ration of citric acid to metal ion 1.5：1 ;calcinations temperature 750 ℃ and calcinations time 2 h.

关 键 词：双功能氧电极 钙钛矿复合氧化物 金属-空气电池 溶胶-凝胶 金属氢化物-空气电池 

分 类 号：O606[理学—化学]