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Title: Designing Pt-based electrocatalysts with high surface energy
Authors: Sheng, Tian
Tian, Na
Zhou, Zhi-You
Lin, Wen-Feng
Sun, Shi-Gang
Issue Date: 2017
Publisher: © American Chemical Society
Citation: SHENG, T. ... et al, 2017. Designing Pt-based electrocatalysts with high surface energy. ACS Energy Letters, 2 (8), pp. 1892-1900.
Abstract: The reactivity of an electrocatalyst depends strongly on its surface structure. Pt-based electrocatalysts of nanocrystals (NCs) enclosed with high-index facets contain a large density of catalytically active sites formed from step and kink atoms on the facets and exhibit intrinsically superior activity. However, the Pt-based NCs of high-index facets do possess a high surface energy and are thermodynamically metastable, leading to a big challenge in their shape-controlled synthesis. To overcome the challenge, kinetic–thermodynamic control of crystal growth is indispensable and is currently realized mainly by electrochemical methods and surfactant-based wet chemical approaches. This Perspective reviews recent progresses in Pt-based electrocatalysts of monometallic and bimetallic NCs of high surface energy with different morphologies of convex or concave tetrahexahedron, trapezohedron, trisoctahedron, hexoctahedron, etc. Remarkable electrocatalytic performance of these NCs has been demonstrated. Despite the considerable progress already made, the electrocatalysts of NCs with high surface energy still hold significant future opportunities in both fundamental understanding and practical applications.
Description: This paper is closed access until 26th July 2018. This document is the Accepted Manuscript version of a Published Work that appeared in final form in ACS Energy Letters, copyright © American Chemical Society after peer review and technical editing by the publisher. To access the final edited and published work see http://dx.doi.org/10.1021/acsenergylett.7b00385.
Sponsor: This work is supported by NSFC (21621091, 21573183, 21229301 and 21361140374).
Version: Accepted for publication
DOI: 10.1021/acsenergylett.7b00385
URI: https://dspace.lboro.ac.uk/2134/26110
Publisher Link: http://dx.doi.org/10.1021/acsenergylett.7b00385
Appears in Collections:Closed Access (Chemical Engineering)

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