Novel Bi‐Doped Amorphous SnOx Nanoshells for Efficient Electrochemical CO2 Reduction into Formate at Low Overpotentials

• DOI: 10.1002/adma.202002822
• Publication Date: 2020-07-24T04:36:08Z
• Authors: Qi Yang; Qilong Wu; Yang Liu; Shuiping Luo; Xiaotong Wu; Xixia Zhao; Haiyuan Zou; Baihua Long; Wen Chen; Yujia Liao; Lanxi Li; Pei Kang Shen; Lele Duan; Zewei Quan
• Keywords: Bimetallic strip; Nanoshell; Tin oxide

Engineering novel Sn-based bimetallic materials could provide intriguing catalytic properties to boost the electrochemical CO2 reduction. Herein, first synthesis of homogeneous Sn1-x Bix alloy nanoparticles (x up 0.20) with native Bi-doped amorphous SnOx shells for efficient reduction is reported. The Bi-SnOx nanoshells production formate high Faradaic efficiencies (>90%) over a wide potential window (-0.67 -0.92 V vs RHE) low overpotentials, outperforming current tin oxide catalysts. state-of-the-art derived from Sn0.80 Bi0.20 exhibit great partial density 74.6 mA cm-2 and efficiency 95.8%. detailed electrocatalytic analyses corresponding functional theory calculations simultaneously reveal that incorporation Bi atoms into Sn species facilitates by suppressing formation H2 CO.