中国粉体技术2012，Vol.18Issue(5)：1-5,5.DOI:10.3969/j.issn.1008-5548.2012.05.001
pH对制备直接甲醇燃料电池新型IrxS1-x-C阴极催化剂的影响
Influence of pH on Preparation of Novel IrxS1-x-C Cathodic Catalysts in Direct Methanol Fuel Cell
摘要
Abstract
Novel methanol tolerant oxygen reduction catalysts, IrxS1-x-C (x=0.7) used in direct methanol fuel cell, were synthesized via a precipitation method by using H2IrCl6 and Na2SO3 as the precursors, and sodium citrate as the stabilizer, respectively. Powder X ray diffraction and transmission electron microscopy were applied to characterize the phase and morphology of IrxS1-x-C cathodic catalysts respectively. The cyclic voltammetry and rotating disk electrode methods were used for the characterization of the catalyst electroactivity and the catalyzed oxygen reduction reaction kinetics. The performances of different samples prepared in the solution at different pH values were compared. The results show that when pH is 5, IrxS1-x-C phase is instable and the impurity phases generates. When pH is 11, IrxS1-x-C catalysts present the smallest particle size, a well dispersion, and the relatively superior electrochemical properties, comparing to other samples made at pH being7, 9and 13.关键词
直接甲醇燃料电池/IrxS1-x-C阴极催化剂/电化学性能Key words
direct methanol fuel cell/ IrxS1-x-C cathodic catalyst/ electro-chemicalproperty分类
信息技术与安全科学引用本文复制引用
艾德生,马静玉,谢晓峰..pH对制备直接甲醇燃料电池新型IrxS1-x-C阴极催化剂的影响[J].中国粉体技术,2012,18(5):1-5,5.基金项目
国家高技术研究发展计划(863计划)项目,编号:2007AA05Z146,2007AA05Z150. （863计划）
