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Issue 14, 2017
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Trivalent cerium-preponderant CeO2/graphene sandwich-structured nanocomposite with greatly enhanced catalytic activity for the oxygen reduction reaction

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Abstract

A sandwich-like CeO2/graphene nanocomposite (CeGS) with a uniform thin CeO2 crystalline film coating on reduced graphene oxide is presented. Large amounts of trivalent Ce and abundant oxygen vacancies (VO) were introduced onto the surface of CeGS. Due to the advantageous surficial crystal configuration, this CeGS displayed greatly enhanced catalytic activity and excellent durability for the oxygen reduction reaction (ORR). By DFT calculations, it was demonstrated that the Ce(III)-preponderant and VO-containing surface benefited the intense chemical adsorption and activation of O2 and optimized the intermediate reaction pathways.

Graphical abstract: Trivalent cerium-preponderant CeO2/graphene sandwich-structured nanocomposite with greatly enhanced catalytic activity for the oxygen reduction reaction

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Publication details

The article was received on 04 Dec 2016, accepted on 22 Feb 2017 and first published on 23 Feb 2017


Article type: Paper
DOI: 10.1039/C6TA10415K
Citation: J. Mater. Chem. A, 2017,5, 6656-6663
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    Trivalent cerium-preponderant CeO2/graphene sandwich-structured nanocomposite with greatly enhanced catalytic activity for the oxygen reduction reaction

    Y. Yu, X. Wang, W. Gao, P. Li, W. Yan, S. Wu, Q. Cui, W. Song and K. Ding, J. Mater. Chem. A, 2017, 5, 6656
    DOI: 10.1039/C6TA10415K

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