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Electrodepositing Dense Sn/SnBi Alloy on Carbon Cloth for Electrocatalytic CO2 Reduction |
Author Name | Affiliation | E-mail | DONG He-Nan | Electric Power Research Institute of State Grid Liaoning Electric Power Co., Ltd., Shenyang 110006, China | | GE Yang-Yang | Electric Power Research Institute of State Grid Liaoning Electric Power Co., Ltd., Shenyang 110006, China | | WEI Xin-Ying | Eco-materials and Renewable Energy Research Center (ERERC), College of Engineering and Applied Sciences, Nanjing University, Nanjing 210093, China | | LIU De-Pei | Eco-materials and Renewable Energy Research Center (ERERC), College of Engineering and Applied Sciences, Nanjing University, Nanjing 210093, China | | YAN Yuan-Dong | Eco-materials and Renewable Energy Research Center (ERERC), College of Engineering and Applied Sciences, Nanjing University, Nanjing 210093, China | | YAN Shi-Cheng | Eco-materials and Renewable Energy Research Center (ERERC), College of Engineering and Applied Sciences, Nanjing University, Nanjing 210093, China | yscfei@nju.edu.cn |
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Abstract: SnBi alloy was prepared by the two-step electrodeposition method. Sn was first electrodeposited on the carbon cloth (CC). Since the electrolyte used in the second step was acidic, Sn was dissolved in the electrolyte to form a small amount of Sn2+. As a result, SnBi alloy dendrites formed by doping a small amount of Sn with Bi. Subsequently, SnBi alloy dendrites were transformed into SnBi alloy nanoparticles (NPs) by in-situ chemical oxidation and electrochemical reduction. Thanks to the nucleation sites provided by Sn, SnBi dendrites grow densely and uniformly on the CC, providing a high-quality precursor and finally achieving SnBi nanoparticles with a diameter of about 20 nm through two-step transformation. CC/Sn/SnBi NPs electrode exhibited 94.9% formate selectivity and current density up to 36 mA·cm-2 at-1.08 V (vs RHE), showing high activity of electrocatalytic reduction of CO2 with the continuous 12 h stability. |
Keywords: electrocatalytic CO2 reduction SnBi alloy three-dimensional electrode bimetallic orbital interactions |
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DONG He-Nan,GE Yang-Yang,WEI Xin-Ying,LIU De-Pei,YAN Yuan-Dong,YAN Shi-Cheng.Electrodepositing Dense Sn/SnBi Alloy on Carbon Cloth for Electrocatalytic CO2 Reduction[J].Chinese Journal of Inorganic Chemistry,2022,38(12):2433-2442. |
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