Yb‐Doped Cu‐Based Catalyst Boosting Electrochemical CO <sub>2</sub> ‐to‐C <sub>2+</sub> Reduction Across pH Range at Ampere‐Level Current Density
Abstract
Abstract Efficient electrochemical conversion of CO 2 to multi‐carbon (C 2+ ) products remains significant challenges, particularly under broad pH ranges and high‐current‐density conditions. Herein, we report ampere‐level CO 2 ‐to‐C 2+ electroreduction with exceptional efficiency across a wide pH range using ytterbium‐doped CuO x catalysts. The catalyst achieves Faradaic efficiency of 87 ± 2%, 77 ± 1%, and 78 ± 1% under alkaline, neutral, and acidic conditions, respectively. Electrochemical in situ infrared spectroscopy and Raman spectroscopy reveal that Yb‐stabilizing Cu + species and enriching *CO on Cu terrace sites are two critical factors for enhancing C─C coupling. This work not only develops a highly efficient electrocatalysts for sustainable C 2+ production, but also establishes a doping strategy for stabilizing active sites and optimizing *CO adsorption configurations.
Article Details
Authors (13)
Ao Feng
Nan Fang
Xiao‐Tian Yuan
State Key Laboratory of Physical Chemistry of Solid Surface College of Chemistry and Chemical Engineering Xiamen University Xiamen 361005 China
Kun‐Lin Li
State Key Laboratory of Physical Chemistry of Solid Surface College of Chemistry and Chemical Engineering Xiamen University Xiamen 361005 China
Xuantao Deng
State Key Laboratory of Physical Chemistry of Solid Surface College of Chemistry and Chemical Engineering Xiamen University Xiamen 361005 China
Jia‐Feng Du
State Key Laboratory of Physical Chemistry of Solid Surfaces College of Chemistry and Chemical Engineering Xiamen University Xiamen China
Zhi‐Ming Zhang
State Key Laboratory of Crystal Materials Institute for New Energy Materials and Low Carbon Technologies School of Materials Science and Engineering Tianjin University of Technology Tianjin China
Si‐Ying Li
State Key Laboratory of Physical Chemistry of Solid Surface College of Chemistry and Chemical Engineering Xiamen University Xiamen 361005 China
De‐Yin Wu
State Key Laboratory of Physical Chemistry of Solid Surface College of Chemistry and Chemical Engineering Xiamen University Xiamen 361005 China
Jin‐Yu Ye
State Key Laboratory of Physical Chemistry of Solid Surfaces College of Chemistry and Chemical Engineering Xiamen University Xiamen China
Qi‐Zheng Zheng
Institute of New Energy Materials and Engineering College of Materials Science and Engineering Fujian Engineering Research Center of High Energy Batteries and New Energy Equipment & Systems Fuzhou University Fuzhou 350108 China
Zhi‐You Zhou
State Key Laboratory of Physical Chemistry of Solid Surfaces College of Chemistry and Chemical Engineering Xiamen University Xiamen China
Shi‐Gang Sun
State Key Laboratory of Physical Chemistry of Solid Surfaces College of Chemistry and Chemical Engineering Xiamen University Xiamen P. R. China