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

Yongxia Wang; Xiangzhi Cui; Lisong Chen; Chenyang Wei; Fangming Cui; Heliang Yao; Jianlin Shi; Yongsheng Li

doi:10.1039/C3DT53192A

One-step replication and enhanced catalytic activity for cathodic oxygen reduction of the mesostructured Co₃O₄/carbon composites†

Yongxia Wang,^ab Xiangzhi Cui,^b Lisong Chen,^b Chenyang Wei,^b Fangming Cui,^c Heliang Yao,^b Jianlin Shi*^b and Yongsheng Li*^a

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* Corresponding authors

^a Laboratory of Low-Dimensional Materials Chemistry, Key Laboratory for Ultrafine Materials of Ministry of Education, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai 200237, China
E-mail: ysli@ecust.edu.cn

^b The State Key Laboratory of High Performance Ceramics and Superfine Microstructures, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, China
E-mail: jlshi@mail.sic.ac.cn
Fax: +86 21 52413122
Tel: +86 21 52412712

^c Qian Xuesen Laboratory of Space Technology, China Academy of Space Technology, Beijing 100094, China

Abstract

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.

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Article information

DOI: https://doi.org/10.1039/C3DT53192A
Article type: Paper
Submitted: 12 Nov 2013
Accepted: 05 Dec 2013
First published: 06 Dec 2013

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Dalton Trans., 2014,43, 4163-4168

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

Y. Wang, X. Cui, L. Chen, C. Wei, F. Cui, H. Yao, J. Shi and Y. Li, Dalton Trans., 2014, 43, 4163 DOI: 10.1039/C3DT53192A

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