Single‐Atom Catalysts of Precious Metals for Electrochemical Reactions

ChemSusChemVolume 11, Issue 1 p. 104-113 Minireview Single-Atom Catalysts of Precious Metals for Electrochemical Reactions Jiwhan Kim, Jiwhan Kim Department of Chemical and Biomolecular Engineering, Korea Advanced Institute of Science and Technology, Daejeon, 34141 South KoreaSearch for more papers by this authorHee-Eun Kim, Hee-Eun Kim Department of Chemical and Biomolecular Engineering, Korea Advanced Institute of Science and Technology, Daejeon, 34141 South KoreaSearch for more papers by this authorProf. Hyunjoo Lee, Corresponding Author Prof. Hyunjoo Lee azhyun@kaist.ac.kr orcid.org/0000-0002-4538-9086 Department of Chemical and Biomolecular Engineering, Korea Advanced Institute of Science and Technology, Daejeon, 34141 South KoreaSearch for more papers by this author Jiwhan Kim, Jiwhan Kim Department of Chemical and Biomolecular Engineering, Korea Advanced Institute of Science and Technology, Daejeon, 34141 South KoreaSearch for more papers by this authorHee-Eun Kim, Hee-Eun Kim Department of Chemical and Biomolecular Engineering, Korea Advanced Institute of Science and Technology, Daejeon, 34141 South KoreaSearch for more papers by this authorProf. Hyunjoo Lee, Corresponding Author Prof. Hyunjoo Lee azhyun@kaist.ac.kr orcid.org/0000-0002-4538-9086 Department of Chemical and Biomolecular Engineering, Korea Advanced Institute of Science and Technology, Daejeon, 34141 South KoreaSearch for more papers by this author First published: 11 September 2017 https://doi.org/10.1002/cssc.201701306Citations: 179Read the full textAboutPDF ToolsRequest permissionExport citationAdd to favoritesTrack citation ShareShare Give accessShare full text accessShare full-text accessPlease review our Terms and Conditions of Use and check box below to share full-text version of article.I have read and accept the Wiley Online Library Terms and Conditions of UseShareable LinkUse the link below to share a full-text version of this article with your friends and colleagues. Learn more.Copy URL Share a linkShare onFacebookTwitterLinkedInRedditWechat Graphical Abstract Down to the atom: Single-atom catalysts, in which metal atoms are dispersed on the support without forming nanoparticles, have recently been used for electrochemical reactions. In this Minireview, recent examples of single-atom electrocatalysts for reactions including oxygen reduction, hydrogen oxidation, hydrogen evolution, formic acid oxidation, and methanol oxidation are introduced. Abstract Single-atom catalysts (SACs), in which metal atoms are dispersed on the support without forming nanoparticles, have been used for various heterogeneous reactions and most recently for electrochemical reactions. In this Minireview, recent examples of single-atom electrocatalysts used for the oxygen reduction reaction (ORR), hydrogen oxidation reaction (HOR), hydrogen evolution reaction (HER), formic acid oxidation reaction (FAOR), and methanol oxidation reaction (MOR) are introduced. Many density functional theory (DFT) simulations have predicted that SACs may be effective for CO2 reduction to methane or methanol production while suppressing H2 evolution, and those cases are introduced here as well. Single atoms, mainly Pt single atoms, have been deposited on TiN or TiC nanoparticles, defective graphene nanosheets, N-doped covalent triazine frameworks, graphitic carbon nitride, S-doped zeolite-templated carbon, and Sb-doped SnO2 surfaces. Scanning transmission electron microscopy, extended X-ray absorption fine structure measurement, and in situ infrared spectroscopy have been used to detect the single-atom structure and confirm the absence of nanoparticles. SACs have shown high mass activity, minimizing the use of precious metal, and unique selectivity distinct from nanoparticle catalysts owing to the absence of ensemble sites. Additional features that SACs should possess for effective electrochemical applications were also suggested. Conflict of interest The authors declare no conflict of interest. Citing Literature Volume11, Issue1January 10, 2018Pages 104-113 RelatedInformation