DataVXAdvanced Energy MaterialsPaper
journal article·2022-04

Highly‐Exposed Single‐Interlayered Cu Edges Enable High‐Rate CO2‐to‐CH4 Electrosynthesis

Chen Peng, Zikai Xu, Gan Luo, Shuai Yan, Junbo Zhang, Si Li, Yangsheng Chen, Lo Yueh Chang, Zhiqiang Wang, Tsun‐Kong Sham, Gengfeng Zheng

Advanced Energy Materials· Volume 12· Issue 15
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Source abstract

Abstract

Abstract The electrochemical CO2 reduction to CH4 is a promising approach for producing highly specific combustion fuel but has relatively poor selectivity and activity at high‐current‐density electrolysis. In this work, ultrathin CuGaO2 nanosheets with highly exposed single‐interlayered Cu edges are synthesized via an induced anisotropic growth strategy. Density functional theory calculations indicate that the exposed single‐interlayered Cu(I) edges on the (001) surface of CuGaO2 present a high‐density of single‐atomic Cu sites, which feature excellent CO2 electroreduction catalytic activity toward CH4. The CuGaO2 nanosheet catalysts exhibit efficient and stable CO2‐to‐CH4 electroreduction with Faradaic efficiency (FECH4) of 71.7% at a high current density of –1 A cm−2, corresponding to a superior CH4 partial current density of 717 ± 33 mA cm−2. This work suggests an attractive design strategy for tuning both the crystal facets and Cu–Cu distance to promote the CH4 electrosynthesis at high‐current‐density CO2 reduction.
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Research context

NanomaterialsCatalysis & surfaces

OpenAlex topics: CO2 Reduction Techniques and Catalysts · Ionic liquids properties and applications · Electrocatalysts for Energy Conversion

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

Affiliations

Laboratory of Advanced Materials Department of Chemistry and Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials Faculty of Chemistry and Materials Science Fudan University Shanghai 200438 P. R. China

Henan Engineering Center of New Energy Battery Materials Henan D&A Engineering Center of Advanced Battery Materials College of Chemistry and Chemical Engineering Shangqiu Normal University Shangqiu Henan 476000 P. R. China

Institute of Functional Nano and Soft Materials (FUNSOM) Joint International Research Laboratory of Carbon‐Based Functional Materials and Devices Soochow University Suzhou Jiangsu 215123 P. R. China

Department of Chemistry and Soochow‐Western Centre for Synchrotron Radiation Research University of Western Ontario 1151 Richmond Street, London Ontario N6A 5B7 Canada

Funding

National Key Research and Development Program of China · National Natural Science Foundation of China · Science and Technology Commission of Shanghai Municipality

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