In situ growth of Pt3Ni nanoparticles on an A-site deficient perovskite with enhanced activity for the oxygen reduction reaction

Yang Gao; Jian Wang; Yu-Qi Lyu; Kwunyu Lam; Francesco Ciucci

doi:10.1039/C7TA00349H

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In situ growth of Pt₃Ni nanoparticles on an A-site deficient perovskite with enhanced activity for the oxygen reduction reaction†

Yang Gao,^a Jian Wang,

^a Yu-Qi Lyu,^a Kwunyu Lam^a and Francesco Ciucci

*^ab

Author affiliations

* Corresponding authors

^a Department of Mechanical and Aerospace Engineering, The Hong Kong University of Science and Technology, Hong Kong, SAR China
E-mail: francesco.ciucci@ust.hk

^b Department of Chemical and Biomolecular Engineering, The Hong Kong University of Science and Technology, Hong Kong, SAR China

Abstract

A novel A-site deficient perovskite, La_0.9Mn_0.9Pt_0.075Ni_0.025O_3−δ, is developed as a catalyst for the oxygen reduction reaction in alkaline solution. Pt₃Ni nanoparticles are exsolved in situ on the surface upon reduction. The catalytic activity improves significantly after exsolution. This improvement is attributed to the synergy between the host perovskite and the nanoparticles.

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Article information

DOI: https://doi.org/10.1039/C7TA00349H
Article type: Communication
Submitted: 11 Jan 2017
Accepted: 05 Mar 2017
First published: 06 Mar 2017

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J. Mater. Chem. A, 2017,5, 6399-6404

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In situ growth of Pt₃Ni nanoparticles on an A-site deficient perovskite with enhanced activity for the oxygen reduction reaction

Y. Gao, J. Wang, Y. Lyu, K. Lam and F. Ciucci, J. Mater. Chem. A, 2017, 5, 6399 DOI: 10.1039/C7TA00349H

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Journal of Materials Chemistry A