Novel Bi‐Doped Amorphous SnOx Nanoshells for Efficient Electrochemical CO2 Reduction into Formate at Low Overpotentials. Issue 36 (23rd July 2020)

• Record Type: Journal Article
• Authors: Yang, Qi; Wu, Qilong; Liu, Yang; Luo, Shuiping; Wu, Xiaotong; Zhao, Xixia; Zou, Haiyuan; Long, Baihua; Chen, Wen; Liao, Yujia; Li, Lanxi; Shen, Pei Kang; Duan, Lele; Quan, Zewei
• Is Part Of: Advanced materials. Volume 32:Issue 36(2020)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2020-07-23
• Subjects: CO 2 electroreduction -- core–shell nanostructures -- formate -- novel Sn 1−xBix alloys; Materials -- Periodicals; Chemical vapor deposition -- Periodicals; 620.11
• DOI: 10.1002/adma.202002822
• Languages: English
• ISSNs: 0935-9648

Abstract

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