Nano-crumples induced Sn-Bi bimetallic interface pattern with moderate electron bank for highly efficient CO2 electroreduction

• DOI: 10.1038/s41467-022-29861-w
• Publication Date: 2022-05-05T10:08:32Z
• Authors: Bohua Ren; Guobin Wen; Rui Gao; Dan Luo; Zhen Zhang; Weibin Qiu; Qianyi Ma; Xin Wang; Yi Cui; Luis Ricardez–San...; Aiping Yu; Zhongwei Chen
• Keywords: Bimetallic strip

CO2 electroreduction reaction offers an attractive approach to global carbon neutrality. Industrial electrolysis towards formate requires stepped-up current densities, which is limited by the difficulty of precisely reconciling competing intermediates (COOH* and HCOO*). Herein, nano-crumples induced Sn-Bi bimetallic interface-rich materials are in situ designed tailored electrodeposition under conditions, significantly expediting production. Compared with bulk alloy pure Sn, this interface pattern delivers optimum upshift Sn p-band center, accordingly moderate valence electron depletion, leads weakened Sn-C hybridization COOH* suitable Sn-O HCOO*. Superior partial density up 140 mA/cm2 for achieved. High Faradaic efficiency (>90%) maintained at a wide potential window durability 160 h. In work, we elevate design highly active stable efficient electroreduction.