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Small Reduced Graphene Oxides for Highly Efficient Oxygen Reduction Catalysts.
Bak, Su-Jeong; Kim, Sun-I; Lim, Su-Yeong; Kim, Taehyo; Kwon, Se-Hun; Lee, Duck Hyun.
Afiliación
  • Bak SJ; Green Materials and Processes R&D Group, Korea Institute of Industrial Technology, Ulsan 44413, Korea.
  • Kim SI; Department of Materials Science & Engineering, Pusan National University, Busan 46241, Korea.
  • Lim SY; Green Materials and Processes R&D Group, Korea Institute of Industrial Technology, Ulsan 44413, Korea.
  • Kim T; Green Materials and Processes R&D Group, Korea Institute of Industrial Technology, Ulsan 44413, Korea.
  • Kwon SH; Department of Materials Science & Engineering, Pusan National University, Busan 46241, Korea.
  • Lee DH; Green Materials and Processes R&D Group, Korea Institute of Industrial Technology, Ulsan 44413, Korea.
Int J Mol Sci ; 22(22)2021 Nov 14.
Article en En | MEDLINE | ID: mdl-34830182
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.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Oxígeno / Platino (Metal) / Nanopartículas del Metal / Grafito Idioma: En Revista: Int J Mol Sci Año: 2021 Tipo del documento: Article Pais de publicación: Suiza
Texto completo
Añadir a Mi BVS
Imprimir
XML
PubMed Links
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Oxígeno / Platino (Metal) / Nanopartículas del Metal / Grafito Idioma: En Revista: Int J Mol Sci Año: 2021 Tipo del documento: Article Pais de publicación: Suiza