Development of a methodology to optimize the air bleed in PEMFC systems operating with low quality hydrogen

• Type: Article in International Scientific Journal
• Date: 2013

Authors

Perez, L.C. (Author) Other; Taneli Rajala (Author) Other; Jari Ihonen (Author) Other; Pauli Koski (Author) Other; J. M. Sousa (Author) FEUP; Adélio Mendes (Author) FEUP

Journal

Title: International Journal of Hydrogen Energy

Vol. 38 No. 36

Pages: 16286-16299

ISSN: 0360-3199

Publisher: Elsevier

Indexing

ISI Web of Knowledge - 13 Citations

ISI Web of Science

Scopus - 12 Citations

INSPEC

Scientific classification

FOS: Engineering and technology > Chemical engineering

Associated Projects

PTDC/EQU-EQU/104217/2008 - Integração de células de combustível de electrólito de membrana polimérica com membranas de paládio de elevada eficiência

PTDC/CTM/108454/2008 - Propostas inovadoras à permeabilidade do metanol e actividade do catalisador em células de combustível de electrólito de membrana com alimentação directa de metano

Other information

Authenticus ID: P-006-J4Z

DOI: 10.1016/j.ijhydene.2013.10.037

Abstract (EN): The use of hydrogen with lower quality than that specified in current regulation is an attractive option for stationary PEMFC power production. In this paper, the effect of CO is mitigated using air bleed levels up to 2% in an H-2 PEMFC fed with CO concentrations below 20 ppm. A methodology to optimize the air bleed levels is developed using a novel arrangement of cells coupled to a gas chromatograph. The methodology relies on evaluating the distributed performance of the cell and on determining the CO and CO2 molar flow rates at the anode outlet. Furthermore, the amount of CO adsorbed onto the catalyst and the fraction of catalytic sites covered by CO are estimated. The results show that different parameters, such as the H-2 volumetric flow rate, CO concentration and air bleed level, influence both the steady state and dynamics of PEMFCs operated with low quality hydrogen. Copyright

Language: English

Type (Professor's evaluation): Scientific

Notes: Publicação abrangida pelo Journal Citation Reports 2015

No. of pages: 14