首页 | 本学科首页   官方微博 | 高级检索  
     

碳布负载高致密Sn/SnBi合金的电催化CO2还原性能
引用本文:董鹤楠,戈阳阳,魏新颖,刘德培,颜元东,闫世成. 碳布负载高致密Sn/SnBi合金的电催化CO2还原性能[J]. 无机化学学报, 2013, 29(18)
作者姓名:董鹤楠  戈阳阳  魏新颖  刘德培  颜元东  闫世成
作者单位:国网辽宁省电力有限公司电力科学研究院, 沈阳 110006;南京大学现代工程与应用科学学院, 环境材料与可再生能源研究中心, 南京 210093
基金项目:国家自然科学基金(No.51872135,51572121,21633004)、国网辽宁省电力有限公司揭榜挂帅项目(电制氢提升电力系统灵活性关键技术研究,No.2021YF-81)、辽宁省“百千万人才工程”科技项目(平抑新能源波动的高效电解水制氢系统关键技术研究)资助
摘    要:通过分步电沉积法制备碳布(CC)负载高致密Sn/SnBi合金催化剂:首先在CC上电沉积致密Sn颗粒,而后利用酸性电解液部分溶解Sn为Sn2+离子,实现在Sn颗粒表面共沉积SnBi合金枝晶,随后经过原位化学氧化及电化学还原步骤将SnBi合金枝晶转变为SnBi合金纳米颗粒(SnBi NPs)。得益于Sn提供形核位点,SnBi枝晶在碳织物表面垂直致密生长,并通过后续氧化还原转化实现了直径约20nm的SnBi合金颗粒在CC上致密均匀生长。CC/Sn/SnBiNPs三维电极在-1.08V(vsRHE)下显示出较高的电催化还原CO2活性,电流密度高达36mA·cm-2且甲酸盐产物选择性为94.9%。同时,在连续12h恒电压测试中性能未发生衰减,表明电极具有良好的稳定性。

关 键 词:电催化还原CO2  SnBi合金  三维电极  双金属轨道杂化效应
收稿时间:2022-06-15
修稿时间:2022-10-12

Electrodepositing Dense Sn/SnBi Alloy on Carbon Cloth for Electrocatalytic CO2 Reduction
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, 2013, 29(18)
Authors:DONG He Nan  GE Yang Yang  WEI Xin Ying  LIU De Pei  YAN Yuan Dong  YAN Shi Cheng
Affiliation:Electric Power Research Institute of State Grid Liaoning Electric Power Co., Ltd., Shenyang 110006, China;Eco-materials and Renewable Energy Research Center (ERERC), College of Engineering and Applied Sciences, Nanjing University, Nanjing 210093, China
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. Subse- quently, 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 uniform- ly 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
点击此处可从《无机化学学报》浏览原始摘要信息
点击此处可从《无机化学学报》下载全文
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号