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

• Type: Article in International Scientific Journal
• Date: 2014

Authors

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

Journal

Title: Journal of Power Sources

Vol. 258

Pages: 122-128

ISSN: 0378-7753

Publisher: Elsevier

Indexing

ISI Web of Knowledge - 22 Citations

ISI Web of Science

Scopus - 29 Citations

INSPEC

Scientific classification

FOS: Engineering and technology > Chemical engineering

CORDIS: Technological sciences > Engineering > Chemical engineering

Associated Projects

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

Other information

Authenticus ID: 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.

Language: English

Type (Professor's evaluation): Scientific

Notes: Publicação abrangida pelo Journal Citation Reports 2015

No. of pages: 7