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Updated: Jan 13, 2026

Solar-Driven Electrochemical Green Fuel Production from CO2 and Water Using Ti3C2Tx MXene-Supported CuZn and NiCo Catalysts
Published on: November 7, 2025
Yb-Doped Cu-Based Catalyst Boosting Electrochemical CO2-to-C2+ Reduction Across pH Range at Ampere-Level Current
Ao Feng1, Nan Fang1, Xiao-Tian Yuan1
1State Key Laboratory of Physical Chemistry of Solid Surface, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, China.
None:
Efficient electrochemical conversion of CO2 to multi-carbon (C2+) products remains significant challenges, particularly under broad pH ranges and high-current-density conditions. Herein, we report ampere-level CO2-to-C2+ electroreduction with exceptional efficiency across a wide pH range using ytterbium-doped CuOx 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 C2+ production, but also establishes a doping strategy for stabilizing active sites and optimizing *CO adsorption configurations.
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