双金属片
法拉第效率
格式化
材料科学
电解
化学工程
阳极
纳米技术
电极
化学
催化作用
电解质
物理化学
金属
冶金
工程类
生物化学
作者
Bohua Ren,Guobin Wen,Rui Gao,Dan Luo,Zhen Zhang,Weibin Qiu,Qianyi Ma,Xin Wang,Yi Cui,Luis Ricardez–Sandoval,Aiping Yu,Zhongwei Chen
标识
DOI:10.1038/s41467-022-29861-w
摘要
CO2 electroreduction reaction offers an attractive approach to global carbon neutrality. Industrial CO2 electrolysis towards formate requires stepped-up current densities, which is limited by the difficulty of precisely reconciling the competing intermediates (COOH* and HCOO*). Herein, nano-crumples induced Sn-Bi bimetallic interface-rich materials are in situ designed by tailored electrodeposition under CO2 electrolysis conditions, significantly expediting formate production. Compared with Sn-Bi bulk alloy and pure Sn, this Sn-Bi interface pattern delivers optimum upshift of Sn p-band center, accordingly the moderate valence electron depletion, which leads to weakened Sn-C hybridization of competing COOH* and suitable Sn-O hybridization of HCOO*. Superior partial current density up to 140 mA/cm2 for formate is achieved. High Faradaic efficiency (>90%) is maintained at a wide potential window with a durability of 160 h. In this work, we elevate the interface design of highly active and stable materials for efficient CO2 electroreduction.
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