Logo do repositório

Percorrer por autor "Zeng, Binwen"

A mostrar 1 - 1 de 1
  • Atomic Dispersion of Scandium in Electrochemically Reduced Copper Oxide Nanosheets for Efficient Electrocatalytic CO2 Reduction to C2+ Products
    Publication . Zhao, Yang; Zeng, Binwen; Huang, Haoliang; Yang, Huanhuan; Yu, Zhipeng; Song, Chao; Wang, Jingwei; Xu, Kaiyang; Xiang, Xinyi; Wang, Wei; Lin, Fei; Meng, Sheng; Meng, Lijian; Cui, Zhiming; Liu, Lifeng
    Converting CO2 into value-added chemicals and fuels through electrochemical CO2 reduction reaction (CO2RR) has been acknowledged as a disruptive technology for chemical industry and an important means to realizing carbon neutrality. However, it remains challenging to achieve high selectivity for C2+ products at a large current density with a low overpotential. Herein, we report a scandium (Sc) single-atom-doped CuO nanosheet (Sc1CuO NS) electrocatalyst for efficient and durable CO2-to-C2+ conversion. The optimal Sc1CuO NS catalyst achieves a maximal C2+ Faradaic efficiency of 73 ± 1.8 % at 475.2 mA cm−2 under an ultralow potential of −0.6 V versus the reversible hydrogen electrode (RHE) and maintains stable CO2-to-C2+ conversion at ∼206 mA cm−2 with a > 60 % Faradaic efficiency for 47 h without degradation. In-situ spectroscopy measurements combined with density functional theory (DFT) calculations reveal that the electron transfer from Sc to Cu enhances the activation of CO2 to *CO. Moreover, the in-situ electrochemical reduction of CuO generates abundant undercoordinated Cu0 sites, featuring tensile-strained Sc-(O)-Cu motifs, which serve as active centers that reduce the reaction barrier for Csingle bondC coupling. This work highlights the importance of rare-earth doping combined with in-situ electrochemical surface reconstruction of CuO as an effective catalyst design strategy to boost CO2-to-C2+ conversion performance.
    2025Artigo científico Acesso aberto Ver mais