Small Reduced Graphene Oxides for Highly Efficient Oxygen Reduction Catalysts
We demonstrated highly efficient oxygen reduction catalysts composed of uniform Pt nanoparticles on small, reduced graphene oxides (srGO). The reduced graphene oxide (rGO) size was controlled by applying ultrasonication, and the resultant srGO enabled the morphological control of the Pt nanoparticle...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2021-11-01
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| Series: | International Journal of Molecular Sciences |
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| Online Access: | https://www.mdpi.com/1422-0067/22/22/12300 |
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| author | Su-Jeong Bak Sun-I Kim Su-yeong Lim Taehyo Kim Se-Hun Kwon Duck Hyun Lee |
| author_facet | Su-Jeong Bak Sun-I Kim Su-yeong Lim Taehyo Kim Se-Hun Kwon Duck Hyun Lee |
| author_sort | Su-Jeong Bak |
| collection | DOAJ |
| description | We demonstrated highly efficient oxygen reduction catalysts composed of uniform Pt nanoparticles on small, reduced graphene oxides (srGO). The reduced graphene oxide (rGO) size was controlled by applying ultrasonication, and the resultant srGO enabled the morphological control of the Pt nanoparticles. The prepared catalysts provided efficient surface reactions and exhibited large surface areas and high metal dispersions. The resulting Pt/srGO samples exhibited excellent oxygen reduction performance and high stability over 1000 cycles of accelerated durability tests, especially the sample treated with 2 h of sonication. Detailed investigations of the structural and electrochemical properties of the resulting catalysts suggested that both the chemical functionality and electrical conductivity of these samples greatly influence their enhanced oxygen reduction efficiency. |
| first_indexed | 2024-03-10T05:26:00Z |
| format | Article |
| id | doaj.art-cb64787c548041ebafaf59743cd5937c |
| institution | Directory Open Access Journal |
| issn | 1661-6596 1422-0067 |
| language | English |
| last_indexed | 2024-03-10T05:26:00Z |
| publishDate | 2021-11-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | International Journal of Molecular Sciences |
| spelling | doaj.art-cb64787c548041ebafaf59743cd5937c2023-11-22T23:40:11ZengMDPI AGInternational Journal of Molecular Sciences1661-65961422-00672021-11-0122221230010.3390/ijms222212300Small Reduced Graphene Oxides for Highly Efficient Oxygen Reduction CatalystsSu-Jeong Bak0Sun-I Kim1Su-yeong Lim2Taehyo Kim3Se-Hun Kwon4Duck Hyun Lee5Green Materials and Processes R&D Group, Korea Institute of Industrial Technology, Ulsan 44413, KoreaGreen Materials and Processes R&D Group, Korea Institute of Industrial Technology, Ulsan 44413, KoreaGreen Materials and Processes R&D Group, Korea Institute of Industrial Technology, Ulsan 44413, KoreaGreen Materials and Processes R&D Group, Korea Institute of Industrial Technology, Ulsan 44413, KoreaDepartment of Materials Science & Engineering, Pusan National University, Busan 46241, KoreaGreen Materials and Processes R&D Group, Korea Institute of Industrial Technology, Ulsan 44413, KoreaWe demonstrated highly efficient oxygen reduction catalysts composed of uniform Pt nanoparticles on small, reduced graphene oxides (srGO). The reduced graphene oxide (rGO) size was controlled by applying ultrasonication, and the resultant srGO enabled the morphological control of the Pt nanoparticles. The prepared catalysts provided efficient surface reactions and exhibited large surface areas and high metal dispersions. The resulting Pt/srGO samples exhibited excellent oxygen reduction performance and high stability over 1000 cycles of accelerated durability tests, especially the sample treated with 2 h of sonication. Detailed investigations of the structural and electrochemical properties of the resulting catalysts suggested that both the chemical functionality and electrical conductivity of these samples greatly influence their enhanced oxygen reduction efficiency.https://www.mdpi.com/1422-0067/22/22/12300oxygen reduction reactionproton exchange membrane fuel cellgraphenePt catalyst |
| spellingShingle | Su-Jeong Bak Sun-I Kim Su-yeong Lim Taehyo Kim Se-Hun Kwon Duck Hyun Lee Small Reduced Graphene Oxides for Highly Efficient Oxygen Reduction Catalysts International Journal of Molecular Sciences oxygen reduction reaction proton exchange membrane fuel cell graphene Pt catalyst |
| title | Small Reduced Graphene Oxides for Highly Efficient Oxygen Reduction Catalysts |
| title_full | Small Reduced Graphene Oxides for Highly Efficient Oxygen Reduction Catalysts |
| title_fullStr | Small Reduced Graphene Oxides for Highly Efficient Oxygen Reduction Catalysts |
| title_full_unstemmed | Small Reduced Graphene Oxides for Highly Efficient Oxygen Reduction Catalysts |
| title_short | Small Reduced Graphene Oxides for Highly Efficient Oxygen Reduction Catalysts |
| title_sort | small reduced graphene oxides for highly efficient oxygen reduction catalysts |
| topic | oxygen reduction reaction proton exchange membrane fuel cell graphene Pt catalyst |
| url | https://www.mdpi.com/1422-0067/22/22/12300 |
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