文献类型：期刊文献

英文题名：One-step replication and enhanced catalytic activity for cathodic oxygen reduction of the mesostructured Co3O4/carbon composites

作者：Wang, Yongxia[1,2];Cui, Xiangzhi[2];Chen, Lisong[2];Wei, Chenyang[2];Cui, Fangming[3];Yao, Heliang[2];Shi, Jianlin[2];Li, Yongsheng[1]

机构：[1]E China Univ Sci & Technol, Sch Mat Sci & Engn, Key Lab Ultrafine Mat, Lab Low Dimens Mat Chem,Minist Educ, Shanghai 200237, Peoples R China;[2]Chinese Acad Sci, Shanghai Inst Ceram, State Key Lab High Performance Ceram & Superfine, Shanghai 200050, Peoples R China;[3]China Acad Space Technol, Qian Xuesen Lab Space Technol, Beijing 100094, Peoples R China

年份：2014

卷号：43

期号：10

起止页码：4163

外文期刊名：DALTON TRANSACTIONS

收录：;EI(收录号：20140817355847);WOS:【SCI-EXPANDED(收录号:WOS:000331230900039)】；

语种：英文

外文关键词：Oxygen - Silica - Synthesis (chemical) - Carbon carbon composites - Cobalt compounds - Electrolytic reduction - Substrates - Carbon - Mesoporous materials

摘要：Mesostructured Co3O4/C composites of high surface area have been synthesized via a one-step replica route by co-nanocasting cobalt and carbon precursors into mesoporous silica, in which the Co3O4 nanoparticles are homogeneously dispersed in the mesoporous structure of carbon substrates. The mesostructured composites showed relatively high catalytic activities for oxygen reduction reaction (ORR), and that with a Co loading content of 4.3 at% exhibited the best electrochemical performance for ORR. The relatively high catalytic activity is attributed to the effects of the redox couples (Co3+/Co2+) together with the contribution from the conductive mesoporous carbon substrate.