Cobalt Single Atoms Enhance Ethanol Electrooxidation on Pt/CeO₂.

Authors

Haoran Jiang, Yikun Xiao, Zichen Wang, Min Ouyang, Yinghui Jiang, Wangbin Zhu, Qiliang Wei, Niancai Cheng

Published in

Small (Weinheim an der Bergstrasse, Germany). Pages e75077. Aug 05, 2026. Epub Aug 05, 2026.

Abstract

The commercialization of direct ethanol fuel cells (DEFCs) requires the development of electrocatalysts with high activity, high durability, and robust resistance to CO poisoning in the ethanol oxidation reaction (EOR), but there is still a significant challenge to overcome. In this work, we modulated the electronic structure of Pt by incorporating Co,N-co-doped porous carbon (CoNPC) and nanostructured CeO₂ (nCeO₂) to construct an enhanced catalyst (Pt/nCeO₂@CoNPC) for EOR. The CoNPC with Co single atoms not only provides high electrical conductivity and abundant anchoring sites but also participates in electronic modulation. The synergistic electronic effect induced by Co single atoms and nCeO₂ modulates the electronic environment of Pt, thereby tuning its binding affinity toward critical reaction intermediates of EOR. Furthermore, the presence of nCeO₂ promotes the oxidative removal of CO* species through providing abundant OH* and inducing interfacial electronic effect. As a result, Pt/nCeO₂@CoNPC shows strong resistance to CO poisoning, preserves 73% of its original performance following 500 cycles, and presents a remarkable mass activity (1591 mA mg_Pt ^-1).

PMID:
42554135
Bibliographic data and abstract were imported from PubMed on 05 Aug 2026.

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