Ultrathin MnO2 nanoflakes as efficient catalysts for oxygen reduction reaction

Chao Wei; Linghui Yu; Chenlong Cui; Jiadan Lin; Chen Wei; Nripan Mathews; Fengwei Huo; Thirumany Sritharan; Zhichuan Xu

doi:10.1039/C4CC02781G

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Ultrathin MnO₂ nanoflakes as efficient catalysts for oxygen reduction reaction†

Chao Wei,^ab Linghui Yu,^a Chenlong Cui,^a Jiadan Lin,^c Chen Wei,^c Nripan Mathews,^ade Fengwei Huo,^a Thirumany Sritharan^ae and Zhichuan Xu*^abd

Author affiliations

* Corresponding authors

^a School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798, Singapore
E-mail: xuzc@ntu.edu.sg

^b Solar Fuels Lab, Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798, Singapore

^c Department of Physics, National University of Singapore, 3 Science Drive 3, Singapore 117543, Singapore

^d Energy Research Institute @ NTU, Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798, Singapore

^e Singapore-Berkeley Research Initiative for Sustainable Energy, 1 Create Way, Singapore 138602, Singapore

Abstract

Free-standing, ultrathin manganese dioxide nanoflakes were synthesized by cationic surfactant controlled reduction of KMnO₄. MnO₂ nanoflakes showed a much higher mass activity than other manganese based oxides as well as B and N doped nano carbons. The approach here demonstrates a facile chemical route towards efficient manganese dioxide catalysts.

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Article information

DOI: https://doi.org/10.1039/C4CC02781G
Article type: Communication
Submitted: 15 Apr 2014
Accepted: 22 May 2014
First published: 29 May 2014

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Chem. Commun., 2014,50, 7885-7888

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Ultrathin MnO₂ nanoflakes as efficient catalysts for oxygen reduction reaction

C. Wei, L. Yu, C. Cui, J. Lin, C. Wei, N. Mathews, F. Huo, T. Sritharan and Z. Xu, Chem. Commun., 2014, 50, 7885 DOI: 10.1039/C4CC02781G

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Chemical Communications