A Tensile‐Strained Pt–Rh Single‐Atom Alloy Remarkably Boosts Ethanol Oxidation

Shuiping Luo, Long Zhang, Yujia Liao, Lanxi Li, Qi Yang, Xiaotong Wu, Xiaoyu Wu, Dongsheng He, Chunyong He, Wen Chen, Qilong Wu, Mingrui Li, Emiel J.M. Hensen, Zewei Quan

Onderzoeksoutput: Bijdrage aan tijdschriftTijdschriftartikelAcademicpeer review

Samenvatting

The rational design and control of electrocatalysts at single‐atomic sites could enable unprecedented atomic utilization and catalytic properties, yet it remains challenging in multimetallic alloys. Herein, the first example of isolated Rh atoms on ordered PtBi nanoplates (PtBi‐Rh1) by atomic galvanic replacement, and their subsequent transformation into a tensile‐strained Pt–Rh single‐atom alloy (PtBi@PtRh1) via electrochemical dealloying are presented. Benefiting from the Rh1‐tailored Pt (110) surface with tensile strain, the PtBi@PtRh1 nanoplates exhibit record‐high and all‐round superior electrocatalytic performance including activity, selectivity, stability, and anti‐poisoning ability toward ethanol oxidation in alkaline electrolytes. Density functional theory calculations reveal the synergism between effective Rh1 and tensile strain in boosting the adsorption of ethanol and key surface intermediates and the C-C bond cleavage of the intermediates. The facile synthesis of the tensile‐strained single‐atom alloy provides a novel strategy to construct model nanostructures, accelerating the development of highly efficient electrocatalysts.
Originele taal-2Engels
Artikelnummer2008508
Aantal pagina's19
TijdschriftAdvanced Materials
Volume33
Nummer van het tijdschrift17
Vroegere onlinedatum22 mrt 2021
DOI's
StatusGepubliceerd - apr 2021

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