Target High‐Efficient Ethylene Production from Dilute CO 2 Enabled by Sustainable Contact Electrons

作者：Nannan Wang, Wenbin Jiang, Haisong Feng, Jing Yang, Bofan Li, Tongtong Yu, Changhe Du, Jianbiao Wang, Jerry Zhi Xiong Heng, Jia Hong Pan, Yong‐Wei Zhang, Daoai Wang, Enyi Ye, Zibiao Li · 发表于：Small · 年份：2025 · DOI：10.1002/smll.202411815 · 被引用次数：8 · 研究领域：CO2 Reduction Techniques and Catalysts、Ammonia Synthesis and Nitrogen Reduction、Ionic liquids properties and applications

Abstract The electrochemical CO 2 reduction reaction (CO 2 RR) exhibits significant potential to efficiently convert CO 2 into ethylene (C 2 H 4 ). However, achieving high C 2 H 4 selectivity remains a considerable challenge due to the difficulty in effective C─C coupling and stringent requirements on CO 2 purity. Herein, a novel contact‐electro‐catalysis method for CO 2 RR is presented by constructing dual‐active‐site catalysts on the electronegative tribolayer of a triboelectric nanogenerator (TENG), including single copper atom anchored polymeric carbon nitride (Cu─PCN) and CuO nanoparticle, achieving an outstanding C 2 H 4 Faradaic efficiency of 63.5% in dilute CO 2 . Experimental and theoretical studies indicate that Cu─PCN active sites exhibit the ability to heighten * H adsorption and facilitate its migration into CuO nanoparticles. This process effectively modulates the coverage of * H on CuO and promotes the transformation of * CO into * CHO. Subsequently, * CHO undergoes dimerization on the CuO surface, ultimately yielding C 2 H 4 . Furthermore, the electric field generated by the TENG enhances the coverage of * H and * CO on both the Cu─PCN and CuO surfaces, which subsequently reduces the energy barrier for C─C coupling. This work provides a new route to enhance the selective reduction of CO 2 to C 2 H 4 by integrating contact electrocatalysis with dual active site technologies.