材料科学与工程学报2013，Vol.31Issue(4)：572-575,584,5.
二元稀土钴酸盐合成及其电化学性能
Synthesis and Electrochemical Properties of Binary Rare Earth Cobaltites
摘要
Abstract
A series of binary rare earth cobaltites were synthesized by citrate sol-gel route and crystal structures were analyzed by X-ray diffraction spectra.Results show that the binary rare earth cobaltites possess perovskite structure,and that the particle sizes are between 16.7-31.5 nm.Both Co(Ⅱ)/Co(Ⅲ) transition and Co(Ⅲ)/Co(Ⅳ) transition are observed by cycle voltammetry in alkalescence medium.The results indicate that the binary rare earth cobaltites show electrocatalytic activities on the oxidation of methanol,and that electrocatalytic activities of the binary rare earth cobaltites decrease when increasing the nuclear charge number of rare earth.The results also display that cobahite La0.sPr0.5CoO3 shows higher catalytic activities than other binary rare earth cobaltites.关键词
稀土钴酸盐/钙钛矿结构/电化学性能Key words
rare cobaltite/ perovskite structure / electrocatalytic activity分类
化学化工引用本文复制引用
黄华..二元稀土钴酸盐合成及其电化学性能[J].材料科学与工程学报,2013,31(4):572-575,584,5.基金项目
福建省科技重大专题资助项目(2001L001)及福州市科技资助项目(2010-G-100) （2001L001）
