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...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autores principales:	Su-Jeong Bak, Sun-I Kim, Su-yeong Lim, Taehyo Kim, Se-Hun Kwon, Duck Hyun Lee
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	oxygen reduction reaction proton exchange membrane fuel cell graphene Pt catalyst Biology (General) QH301-705.5 Chemistry QD1-999
Acceso en línea:	https://doaj.org/article/cb64787c548041ebafaf59743cd5937c
Etiquetas:	Agregar Etiqueta Sin Etiquetas, Sea el primero en etiquetar este registro!

id	oai:doaj.org-article:cb64787c548041ebafaf59743cd5937c
record_format	dspace
spelling	oai:doaj.org-article:cb64787c548041ebafaf59743cd5937c2021-11-25T17:55:12ZSmall Reduced Graphene Oxides for Highly Efficient Oxygen Reduction Catalysts10.3390/ijms2222123001422-00671661-6596https://doaj.org/article/cb64787c548041ebafaf59743cd5937c2021-11-01T00:00:00Zhttps://www.mdpi.com/1422-0067/22/22/12300https://doaj.org/toc/1661-6596https://doaj.org/toc/1422-0067We 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.Su-Jeong BakSun-I KimSu-yeong LimTaehyo KimSe-Hun KwonDuck Hyun LeeMDPI AGarticleoxygen reduction reactionproton exchange membrane fuel cellgraphenePt catalystBiology (General)QH301-705.5ChemistryQD1-999ENInternational Journal of Molecular Sciences, Vol 22, Iss 12300, p 12300 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	oxygen reduction reaction proton exchange membrane fuel cell graphene Pt catalyst Biology (General) QH301-705.5 Chemistry QD1-999
spellingShingle	oxygen reduction reaction proton exchange membrane fuel cell graphene Pt catalyst Biology (General) QH301-705.5 Chemistry QD1-999 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
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.
format	article
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
title	Small Reduced Graphene Oxides for Highly Efficient Oxygen Reduction Catalysts
title_short	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_sort	small reduced graphene oxides for highly efficient oxygen reduction catalysts
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/cb64787c548041ebafaf59743cd5937c
work_keys_str_mv	AT sujeongbak smallreducedgrapheneoxidesforhighlyefficientoxygenreductioncatalysts AT sunikim smallreducedgrapheneoxidesforhighlyefficientoxygenreductioncatalysts AT suyeonglim smallreducedgrapheneoxidesforhighlyefficientoxygenreductioncatalysts AT taehyokim smallreducedgrapheneoxidesforhighlyefficientoxygenreductioncatalysts AT sehunkwon smallreducedgrapheneoxidesforhighlyefficientoxygenreductioncatalysts AT duckhyunlee smallreducedgrapheneoxidesforhighlyefficientoxygenreductioncatalysts
_version_	1718411888277061632

Small Reduced Graphene Oxides for Highly Efficient Oxygen Reduction Catalysts

Ejemplares similares