Development of Robust Electrocatalysts Comprising Single-atom Sites with Designed Coordination Environments
Single-atom catalysts (SACs), which are composed of singly isolated metal sites and heterogeneous supports, have recently attracted intensive attention as a novel category of electrocatalysts. SACs can not only ultimately reduce the loading amount of noble metals but also exhibit unique reaction act...
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| Format: | Article |
| Language: | English |
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The Electrochemical Society of Japan
2020-11-01
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| Series: | Electrochemistry |
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| Online Access: | https://www.jstage.jst.go.jp/article/electrochemistry/88/6/88_20-00089/_pdf/-char/en |
| _version_ | 1797971985270046720 |
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| author | Kazuhide KAMIYA |
| author_facet | Kazuhide KAMIYA |
| author_sort | Kazuhide KAMIYA |
| collection | DOAJ |
| description | Single-atom catalysts (SACs), which are composed of singly isolated metal sites and heterogeneous supports, have recently attracted intensive attention as a novel category of electrocatalysts. SACs can not only ultimately reduce the loading amount of noble metals but also exhibit unique reaction activity and selectivity for many reactions. However, the design flexibility of conventional supports of SACs, including nanocarbons and metal oxides, is poor. Therefore, designing coordination environments of metal centers in SACs, which are one of the most significant parameters governing their electrocatalytic properties, has been challenging. This review outlines the synthesis of two kinds of SACs with defined coordination structures and their unique electrocatalytic activities. First, graphenes doped with metals (Fe, Cu, and Ni) and nitrogen atoms, which were prepared by a short-duration heat treatment, function as efficient electrocatalysts for oxygen reduction reactions and CO2 reduction reactions. Second, metal-doped covalent organic frameworks, which are a class of porous conjugated polymers, exhibit unique electrocatalytic selectivity compared with bulk metals. |
| first_indexed | 2024-04-11T03:41:19Z |
| format | Article |
| id | doaj.art-a534ecc94b154bb0975ab671067a38fe |
| institution | Directory Open Access Journal |
| issn | 2186-2451 |
| language | English |
| last_indexed | 2024-04-11T03:41:19Z |
| publishDate | 2020-11-01 |
| publisher | The Electrochemical Society of Japan |
| record_format | Article |
| series | Electrochemistry |
| spelling | doaj.art-a534ecc94b154bb0975ab671067a38fe2023-01-02T03:45:32ZengThe Electrochemical Society of JapanElectrochemistry2186-24512020-11-0188648949610.5796/electrochemistry.20-00089electrochemistryDevelopment of Robust Electrocatalysts Comprising Single-atom Sites with Designed Coordination EnvironmentsKazuhide KAMIYA0Research Center for Solar Energy Chemistry, Osaka UniversitySingle-atom catalysts (SACs), which are composed of singly isolated metal sites and heterogeneous supports, have recently attracted intensive attention as a novel category of electrocatalysts. SACs can not only ultimately reduce the loading amount of noble metals but also exhibit unique reaction activity and selectivity for many reactions. However, the design flexibility of conventional supports of SACs, including nanocarbons and metal oxides, is poor. Therefore, designing coordination environments of metal centers in SACs, which are one of the most significant parameters governing their electrocatalytic properties, has been challenging. This review outlines the synthesis of two kinds of SACs with defined coordination structures and their unique electrocatalytic activities. First, graphenes doped with metals (Fe, Cu, and Ni) and nitrogen atoms, which were prepared by a short-duration heat treatment, function as efficient electrocatalysts for oxygen reduction reactions and CO2 reduction reactions. Second, metal-doped covalent organic frameworks, which are a class of porous conjugated polymers, exhibit unique electrocatalytic selectivity compared with bulk metals.https://www.jstage.jst.go.jp/article/electrochemistry/88/6/88_20-00089/_pdf/-char/ensingle-atom electrocatalystcovalent organic frameworksmetal-nitrogen-doped graphenes |
| spellingShingle | Kazuhide KAMIYA Development of Robust Electrocatalysts Comprising Single-atom Sites with Designed Coordination Environments Electrochemistry single-atom electrocatalyst covalent organic frameworks metal-nitrogen-doped graphenes |
| title | Development of Robust Electrocatalysts Comprising Single-atom Sites with Designed Coordination Environments |
| title_full | Development of Robust Electrocatalysts Comprising Single-atom Sites with Designed Coordination Environments |
| title_fullStr | Development of Robust Electrocatalysts Comprising Single-atom Sites with Designed Coordination Environments |
| title_full_unstemmed | Development of Robust Electrocatalysts Comprising Single-atom Sites with Designed Coordination Environments |
| title_short | Development of Robust Electrocatalysts Comprising Single-atom Sites with Designed Coordination Environments |
| title_sort | development of robust electrocatalysts comprising single atom sites with designed coordination environments |
| topic | single-atom electrocatalyst covalent organic frameworks metal-nitrogen-doped graphenes |
| url | https://www.jstage.jst.go.jp/article/electrochemistry/88/6/88_20-00089/_pdf/-char/en |
| work_keys_str_mv | AT kazuhidekamiya developmentofrobustelectrocatalystscomprisingsingleatomsiteswithdesignedcoordinationenvironments |