Surface-composition-driven patchy carbon shells unlock high activity and durability in PtCu oxygen reduction catalysts

Chemical Communications 2026

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Authors: Hyelim Park, Keonwoo Ko, Yunjin Kim, Sourabh S. Chougule, Abhishek A Chavan, Jaemin Kim, Yeongeun Im, Hun Kim, Wonhong Choi, Kwang Bok Yi, Namgee Jung
DOI: 10.1039/d5cc07184d
Cited by: 1
References: 32

Abstract

Low-temperature CO treatment induces Pt surface segregation in carbon-incorporated PtCu nanoparticles, creating Pt-rich surface domains that localize carbon growth. Subsequent high-temperature Ar treatment forms a patchy carbon shell, enabling selective near-surface Cu dealloying, boosting oxygen reduction reaction (ORR) activity while suppressing particle degradation and markedly improving durability.

Fields of Study & Subjects

Electrocatalysts for Energy Conversion Ammonia Synthesis and Nitrogen Reduction Catalytic Processes in Materials Science

Publication details

Journal / source
Chemical Communications
Publisher
Royal Society of Chemistry (RSC)
Volume
62
Issue
16
Pages
4749–4753
Publication date
1 January 2026
Language
EN