Atomically Dispersed Ni–Cu Catalysts for pH‐Universal CO2 Electroreduction

• DOI: 10.1002/adma.202209590
• Publication Date: 2023-01-10T23:10:21Z
• Authors: Libing Zhang; Jiaqi Feng; Shoujie Liu; Xingxing Tan; Limin Wu; Shunhan Jia; Liang Xu; Xiaodong Ma; Xinning Song; Jun Ma; Xiaofu Sun; Buxing Han
• Keywords: Carbon fibers

CO2 electroreduction is of great significance to reduce emissions and complete the carbon cycle. However, unavoidable carbonate formation low utilization efficiency in neutral or alkaline electrolytes hinder its application at commercial scale. The development reduction under acidic conditions provides a promising strategy, but inhibition hydrogen evolution reaction difficult. Herein, first work design Ni-Cu dual atom catalyst supported on hollow nitrogen-doped reported for pH-universal CO. shows high CO Faradaic ≈99% acidic, neutral, electrolytes, partial current densities reach 190 ± 11, 225 10, 489 14 mA cm-2 , respectively. In particular, reaches 64.3%, which twice as that conditions. Detailed study indicates existence electronic interaction between Ni Cu atoms. atoms push d-band center further toward Fermi level, thereby accelerating *COOH. addition, operando characterizations density functional theory calculation are used elucidate possible mechanism electrolytes.