Strong Electronic Interactions of the Abundant Cu/Ce Interfaces Stabilized Cu₂O for Efficient CO₂ Electroreduction to C₂₊ Products under Large Current Density
Date
2025
Authors
Li, Y.
Zou, J.
Sun, L.
Liu, S.
Li, H.
Song, Z.
Yu, J.
Zhang, L.
Guo, Z.
Editors
Advisors
Journal Title
Journal ISSN
Volume Title
Type:
Journal article
Citation
Advanced Functional Materials, 2025; 35(46):2509899-1-2509899-8
Statement of Responsibility
Yuanrui Li, Jinshuo Zou, Lidan Sun, Siqi Liu, Huiqi Li, Zhongxin Song, Jun Yu, Lei Zhang, Zaiping Guo
Conference Name
Abstract
Copper-based nanocatalysts, represented by Cu₂O nanocubes, are crucial for electrocatalytic CO₂ conversion to C₂₊ products but face significant stability challenges. Structural reconstruction from Cu dissolution and reduction under negative potentials undermines their long-term stability. Herein, a novel Cu₂O@CeOₓ core-shell nanocatalyst is introduced, featuring a Cu₂O nanocube core encapsulated by an amorphous CeOₓ shell. Due to the facilitated electron transfer of abundant Cu/Ce interfaces, the CeOₓ shell layer simultaneously prevents the agglomeration and maintains the oxidation state of Cu₂O nanocubes, bringing in significantly improved stability. Unlike conventional coating layers, the defective CeOₓ shell uniquely avoids obstructing mass transfer while effectively promoting the activation of CO₂ and optimizing the electronic structure of Cu. The Cu₂O@CeOₓ nanocatalyst delivers a remarkable C₂₊ Faradaic efficiency exceeding 80% at 300 mA cm¯² under a low applied potential of −0.98 V, with exceptional durability lasting over 50 h, compared to just 2 h for Cu₂O alone. This work presents an effective strategy to enhance catalyst stability without sacrificing activity, advancing the design of durable catalysts for electrocatalytic applications.
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Dissertation Note
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Description
First published: 30 May 2025
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© 2025 Wiley-VCH GmbH.