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journal article·2025-11

Atomistic and Oxophilic Ce Raises the Inertia of CO Intermediates Toward Enhanced Electrocatalytic Methanation

Zhangyi Zheng, Xingyi Zhan, Le Wei, Jian Cheng, Wei Hua, Mutian Ma, Qianqian Bai, Xinyu Zhang, Yanzhi Zhang, Daqi Song, Tong Zhou, Zhichen Zhou, Huan Wang, Xiaoxing Ke, Wanjian Yin, Zhe Sun, Feng Yan, Zhao Deng, Yang Peng

Small· Volume 21· Issue 44
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Source abstract

Abstract

Abstract Selective and stable methane production via electrocatalytic CO 2 reduction (eCO 2 R) utilizing membrane electrode assembly (MEA) has been challenging, requiring a delicate balance of surface coverage and binding energy among intermediates such as * CO and * H. This study addresses these challenges by doping oxophilic cerium (Ce) into a copper (Cu) matrix through thermal co‐evaporation, creating atomistic CeO χ ‐Cu δ+ domains to promote bridged adsorption of * CO while pumping up the proton supply through enhanced water dissociation. The high inertia of * CO bridge , as co‐stabilized by * OH, and the high proton availability, effectively inhibit C─C coupling while prompting intermediates hydrogenation, ultimately leading to improved methane production. The optimized Ce 2% O χ ‐Cu catalyst achieves an unprecedented stability in MEA operation for over 210 h with an average methane selectivity above 50%. This work offers profound understanding on synergistically tuning intermediates binding and water dissociation through oxophilic rare‐earth doping to steer the eCO 2 R pathway.
Source: crossref · Quality: baseline

Research context

Catalysis & surfaces

OpenAlex topics: CO2 Reduction Techniques and Catalysts · Electrocatalysts for Energy Conversion · Advanced battery technologies research

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Soochow Institute for Energy and Materials Innovations College of Energy Soochow University Suzhou 215006 P. R. China

Jiangsu Key Laboratory of Advanced Negative Carbon Technologies Soochow University Suzhou 215006 P. R. China

College of Materials Science and Engineering Beijing University of Technology Beijing 100124 P. R. China

School of Chemistry and Environmental Engineering Shanghai Institute of Technology Shanghai 201418 P. R. China

Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education) Nankai University Tianjin 300071 P. R. China

Jiangsu Engineering Laboratory of Novel Functional Polymeric Materials Jiangsu Key Laboratory of Advanced Negative Carbon Technologies College of Chemistry Suzhou Key Laboratory of Soft Material and New Energy College of Chemistry, Chemical Engineering and Materials Science Soochow University Suzhou 215123 P. R. China

State Key Laboratory of Coordination Chemistry School of Chemistry and Chemical Engineering Nanjing University Nanjing 210093 P. R. China

Funding

National Natural Science Foundation of China · Natural Science Foundation of Jiangsu Province

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