{"title":"High Performance 3D Self-Supporting Cu−Bi Aerogels for Electrocatalytic Reduction of CO2 to Formate","authors":"Huaxin Li, Xian Yue, Jing Che, Zhou Xiao, Xianbo Yu, Fenglei Sun, Chao Xue, Prof.?Dr. Junhui Xiang","doi":"10.1002/cssc.202200226","DOIUrl":null,"url":null,"abstract":"<p>The electrocatalytic reduction of CO<sub>2</sub> (CO<sub>2</sub>RR) to CO, formate, methane, and other high-value compounds is a promising technique. However, current electrocatalysts suffer from drawbacks such as few active catalytic sites, poor selectivity and low stability, etc, which restrict the practical application. Although monatomic metal catalysts have been widely reported in recent years, high performance non-noble metal aerogels were rarely investigated for electrocatalytic CO<sub>2</sub>RR. Herein, Cu−Bi aerogels with boosted CO<sub>2</sub>RR activity were well constructed by a simple one-step self-assembly method. The resultant Cu<sub>1</sub>Bi<sub>2</sub> exhibits excellent CO<sub>2</sub>RR activity with high faradaic efficiency (FE) of 96.57 % towards HCOOH at a potential of −0.9 V vs. RHE, and the FE<sub>HCOOH</sub> remains over 80.18 % in a wide potential window (−0.8 V to −1.2 V vs. RHE). It demonstrated that the enhanced CO<sub>2</sub>RR activity of Cu−Bi aerogels could be attributed to the 3D self-supporting structure of the catalysis, synergistic effect, and low interfacial charge transfer resistance.</p>","PeriodicalId":149,"journal":{"name":"ChemSusChem","volume":null,"pages":null},"PeriodicalIF":7.5000,"publicationDate":"2022-02-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"7","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"ChemSusChem","FirstCategoryId":"92","ListUrlMain":"https://onlinelibrary.wiley.com/doi/10.1002/cssc.202200226","RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"CHEMISTRY, MULTIDISCIPLINARY","Score":null,"Total":0}
引用次数: 7
Abstract
The electrocatalytic reduction of CO2 (CO2RR) to CO, formate, methane, and other high-value compounds is a promising technique. However, current electrocatalysts suffer from drawbacks such as few active catalytic sites, poor selectivity and low stability, etc, which restrict the practical application. Although monatomic metal catalysts have been widely reported in recent years, high performance non-noble metal aerogels were rarely investigated for electrocatalytic CO2RR. Herein, Cu−Bi aerogels with boosted CO2RR activity were well constructed by a simple one-step self-assembly method. The resultant Cu1Bi2 exhibits excellent CO2RR activity with high faradaic efficiency (FE) of 96.57 % towards HCOOH at a potential of −0.9 V vs. RHE, and the FEHCOOH remains over 80.18 % in a wide potential window (−0.8 V to −1.2 V vs. RHE). It demonstrated that the enhanced CO2RR activity of Cu−Bi aerogels could be attributed to the 3D self-supporting structure of the catalysis, synergistic effect, and low interfacial charge transfer resistance.
电催化还原CO2 (CO2RR)为CO、甲酸酯、甲烷和其他高价值化合物是一项很有前途的技术。但目前电催化剂存在催化活性位点少、选择性差、稳定性低等缺点,制约了电催化剂的实际应用。近年来,单原子金属催化剂已被广泛报道,但用于电催化CO2RR的高性能非贵金属气凝胶的研究却很少。本文通过简单的一步自组装方法构建了具有增强CO2RR活性的Cu−Bi气凝胶。所得Cu1Bi2表现出优异的CO2RR活性,在−0.9 V vs. RHE电位下,对HCOOH的法拉第效率(FE)高达96.57%,在−0.8 V ~−1.2 V vs. RHE宽电位窗口内,FEHCOOH仍保持在80.18%以上。结果表明,Cu−Bi气凝胶的CO2RR活性增强可能与Cu−Bi气凝胶的三维自支撑结构、协同效应和低的界面电荷转移阻力有关。
期刊介绍:
ChemSusChem
Impact Factor (2016): 7.226
Scope:
Interdisciplinary journal
Focuses on research at the interface of chemistry and sustainability
Features the best research on sustainability and energy
Areas Covered:
Chemistry
Materials Science
Chemical Engineering
Biotechnology