Use of single wall carbon nanohorns in polymeric electrolyte fuel cells

• Tipo: Artigo em Revista Científica Internacional
• Data: 2011

Autores

Brandão, L. (Autor) FEUP; Passeira, C. (Autor) FEUP; Gattia, D.M. (Autor) FEUP; Mendes, A. (Autor) FEUP

Revista

Título: Journal of Materials Science

Vol. 46

Páginas: 7198-7205

ISSN: 0022-2461

Editora: Springer Nature

Indexação

ISI Web of Knowledge - 24 Citações

ISI Web of Science

Scopus - 25 Citações

Classificação Científica

FOS: Ciências da engenharia e tecnologias > Engenharia química

Outras Informações

ID Authenticus: P-002-KCG

DOI: 10.1007/s10853-010-4638-6

Abstract (EN): Single wall carbon nanohorns (SWNH), produced by AC arc discharge in air, were used as Pt and PtRu supports in polymer electrolyte membrane fuel cells (PEMFC). These electrocatalysts were compared with equivalent electrocatalysts supported on commercial carbon back. The SWNH were characterized by differential thermal analysis (DTA), TEM, SEM, and XRD. The produced SWNH were 84.5 wt% pure, containing 3 wt% of amorphous carbon and 12.5 wt% of graphitic carbon. SWNH were used as electrocatalyst supports and tested in the electrodes of two types of polymer electrolyte fuel cells: H(2)-fed PEMFC and direct methanol fuel cells (DMFC). The electrocatalyst nanoparticles anchored on both carbon supports were ca. 2.5 nm in diameter obtained by employing ethylene glycol as the reducing agent. The use of SWNH showed catalytic activities 60% higher than using carbon black as the electrocatalyst support in both types of fuel cells.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 8