The role of Pt loading on reduced graphene oxide support in the polyol synthesis of catalysts for oxygen reduction reaction

• Tipo: Artigo em Revista Científica Internacional
• Data: 2020-08-14

Autores

Delgado, S. (Autor) FEUP; Lagarteira, T. (Autor) FEUP; Fernandes, C. (Autor) FEUP; Azenha, C. (Autor) Outra; Mateos-Pedrero, C. (Autor) Outra; Adélio Mendes (Autor) FEUP

Revista

Título: International Journal of Hydrogen Energy

Vol. 45

ISSN: 0360-3199

Editora: Elsevier

Indexação

ISI Web of Knowledge - 1 Citação

Scopus - 2 Citações

BASE - Bielefeld Academic Search Engine

ScienceDirect (Elsevier)

Classificação Científica

FOS: Ciências da engenharia e tecnologias > Engenharia química

Projetos Associados

PEMFC-SUDOE - Sustentabilidade energética na região SUDOE: Rede SUDOE-PEMFC

LEPABE - Financiamento Plurianual 2020-2023 da Unidade de I&D LEPABE - Laboratório de Engenharia de Processos, Ambiente, Biotecnologia e Energia

Outras Informações

ID Authenticus: P-00R-TV7

DOI: 10.1016/j.ijhydene.2020.02.022

Abstract (EN): Common carbon-blacks have shown insufficient stability as cathodic catalyst supports for proton exchange membrane fuel cells (PEMFCs). In this regard, alternative supports have been proposed and, specifically graphene or reduced graphene oxide (rGO), have attracted special attention. Herein, a set of electrocatalysts using reduced graphene oxide (rGO) as support is synthetized by a modified polyol method. The influence of Pt loading on the support is studied and compared with conventional supports, considering Pt particle morphologies and oxygen reduction reaction (ORR) performance in rotating disk electrode (RDE). Despite Pt average particle size typically increases with the Pt loading, 30 wt% of Pt on rGO is the optimal Pt loading, yielding the highest ORR activity among the rGO-supported electrocatalysts. These results show that both Pt loading and type of support greatly impact on the morphology and electrochemical performance of Pt nanoparticles.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 11