journal article·2020-10

In Situ Topotactic Transformation of an Interstitial Alloy for CO Electroreduction

Changming Zhao, Gan Luo, Xiaokang Liu, Wei Zhang, Zhijun Li, Qian Xu, Qinghua Zhang, Huijuan Wang, Deming Li, Fangyao Zhou, Yunteng Qu, Xiao Han, Zezhou Zhu, Geng Wu, Jing Wang, Junfa Zhu, Tao Yao, Yafei Li, Henny J.M. Bouwmeester, Yuen Wu

Advanced Materials· Volume 32· Issue 39
Publisher page

Abstract

Abstract Electrochemical reduction of CO to value‐added products holds promise for storage of energy from renewable sources. Copper can convert CO into multi‐carbon (C2+) products during CO electroreduction. However, developing a Cu electrocatalyst with a high selectivity for CO reduction and desirable production rates for C2+ products remains challenging. Herein, highly lattice‐disordered Cu3N with abundant twin structures as a precursor electrocatalyst is examined for CO reduction. Through in situ activation during the CO reduction reaction (CORR) and concomitant release of nitrogen, the obtained metallic Cu° catalyst particles inherit the lattice dislocations present in the parent Cu3N lattice. The de‐nitrified catalyst delivers an unprecedented C2+ Faradaic efficiency of over 90% at a current density of 727 mA cm−2 in a flow cell system. Using a membrane electrode assembly (MEA) electrolyzer with a solid‐state electrolyte (SSE), a 17.4 vol% ethylene stream and liquid streams with concentration of 1.45 m and 230 × 10−3 m C2+ products at the outlet of the cathode and SSE‐containment layer are obtained.
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Research context

OpenAlex topics: CO2 Reduction Techniques and Catalysts · Advanced Thermoelectric Materials and Devices · Machine Learning in Materials Science

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

Affiliations

Department of Chemistry iChEM (Collaborative Innovation Center of Chemistry for Energy Materials) University of Science and Technology of China Hefei 230026 China

Jiangsu Collaborative Innovation Centre of Biomedical Functional Materials Jiangsu Key Laboratory of New Power Batteries School of Chemistry and Materials Science Nanjing Normal University Nanjing 210023 China

National Synchrotron Radiation Laboratory University of Science and Technology of China Hefei 230029 P.R. China

Provincial Key Laboratory of Oil and Gas Chemical Technology College of Chemistry and Chemical Engineering Northeast Petrolrum University Daqing 163318 P. R. China

The Catalysis and Surface Science Endstation at the BL11U beamline in the National Synchrotron Radiation Laboratory (NSRL) in Hefei China

Institute of Physics Chinese Academy of Sciences Beijing 100190 P. R. China

USTC Center for Micro and Nanoscale Research and Fabrication University of Science and Technology of China P. R. China

Division of Advanced Nanomaterials Suzhou Institute of Nano‐tech and Nano‐bionics Chinese Academy of Sciences Suzhou 215123 China

Electrochemistry Research group Membrane Science and Technology MESA+ Institute for Nanotechnology University of Twente P.O. Box 217 Enschede 7500 AE The Netherlands

CAS Key Laboratory of Materials for Energy Conversion Department of Materials Science and Engineering University of Science and Technology of China Hefei 230026 P. R. China

Funding

National Basic Research Program of China · National Natural Science Foundation of China

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