Research on Preparation and Structure of Ca3Co4O9
作者单位：Institute of Materials ScienceShanghai University Department of Materials Science and EngineeringShanghai Institute of Technology
会议名称：《中国材料大会2012》
会议日期：2012年
学科分类：081704[工学-应用化学] 07[理学] 08[工学] 0817[工学-化学工程与技术] 0703[理学-化学] 070301[理学-无机化学]
关 键 词：Ca3Co4O9 powder Sol-gel method Orthogonal experiment
摘 要：Ca3Co4O9 particles were synthesized using cobalt nitrate, calcium nitrate, and citric acid as the starting precursors by sol-gel method. The absolute ethyl alcohol was selected as the solvent. LFA447 was applied to measure the thermal conductivity from room temperature to 300℃ as the reference to decide the optimal parameters. And the optimal parameters obtained are as follows: ethyl alcohol 100ml, ethylene glycol 5ml, citric acid 12.11g （the mole ratio of citric acid to metal ions is 1.1:1）, and pH=3 to prepare samples with total weight of 5 g.