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Concave PtCo nanooctahedra with high-energy {110} facets for the oxygen reduction reaction

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Abstract

Cost-effective electrocatalysts for the oxygen reduction reaction (ORR) play significant roles in fuel cells and metal–air batteries. Herein, novel PtCo concave nanooctahedra (CNO) with high-energy {110} facets are successfully fabricated by a facile one-pot hydrothermal synthetic approach. Iminodiacetic acid (IDA) plays a crucial role as a structure-guiding agent in regulating the morphology of the PtCo CNO due to its strong chelation with metal ions through the two carboxyl groups and imino group. Benefiting from their unique concave structure and alloy effects, the obtained PtCo CNO exhibit excellent electrochemical activity and stability for the ORR relative to pure Pt nanoparticles (NPs) and commercial Pt black catalysts in alkaline media.

Graphical abstract: Concave PtCo nanooctahedra with high-energy {110} facets for the oxygen reduction reaction

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Publication details

The article was received on 21 Sep 2019, accepted on 30 Oct 2019 and first published on 01 Nov 2019


Article type: Communication
DOI: 10.1039/C9CE01488H
CrystEngComm, 2020, Advance Article

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    Concave PtCo nanooctahedra with high-energy {110} facets for the oxygen reduction reaction

    Z. Li, X. Wang, Z. Zhang, J. Hu, Z. Liu, D. Sun and Y. Tang, CrystEngComm, 2020, Advance Article , DOI: 10.1039/C9CE01488H

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