Effect of fuel utilization on the carbon monoxide poisoning dynamics of Polymer Electrolyte Membrane Fuel Cells

• Tipo: Artigo em Revista Científica Internacional
• Data: 2014

Autores

Luis C. Pérez (Autor) FEUP; Adélio Mendes (Autor) FEUP; Pauli Koski (Autor) Outra; Jari Ihonen (Autor) Outra; José M. Sousa (Autor) FEUP

Revista

Título: Journal of Power Sources

Vol. 258

Páginas: 122-128

ISSN: 0378-7753

Editora: Elsevier

Indexação

ISI Web of Knowledge - 22 Citações

ISI Web of Science

Scopus - 29 Citações

INSPEC

Classificação Científica

FOS: Ciências da engenharia e tecnologias > Engenharia química

CORDIS: Ciências Tecnológicas > Engenharia > Engenharia química

Projetos Associados

FluidCELL - Advanced m-CHP fuel CELL system based on a novel bio-ethanol Fluidized bed membrane reformer

Outras Informações

ID Authenticus: P-009-BXQ

DOI: 10.1016/j.jpowsour.2014.02.016

Abstract (EN): The effect of fuel utilization on the poisoning dynamics by carbon monoxide (CO) is studied for future automotive conditions of Polymer Electrolyte Membrane Fuel Cells (PEMFC). Three fuel utilizations are used, 70%, 40% and 25%. CO is fed in a constant concentration mode of 1 ppm and in a constant molar flow rate mode (CO concentrations between 0.18 and 0.57 ppm). The concentrations are estimated on a dry gas basis. The CO concentration of the anode exhaust gas is analyzed using gas chromatography. CO is detected in the anode exhaust gas almost immediately after it is added to the inlet gas. Moreover, the CO concentration of the anode exhaust gas increases with the fuel utilization for both CO feed modes. It is demonstrated that the lower the fuel utilization, the higher the molar flow rate of CO at the anode outlet at early stages of the CO poisoning. These results suggest that the effect of CO in PEMFC systems with anode gas recirculation is determined by the dynamics of its accumulation in the recirculation loop. Consequently, accurate quantification of impurities limits in current fuel specification (ISO 14687-2:2012) should be determined using anode gas recirculation.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Notas: Publicação abrangida pelo Journal Citation Reports 2015

Nº de páginas: 7