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UNIVERSITY OF BUCHAREST
FACULTY OF PHYSICS Guest
2024-11-22 1:51 |
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Conference: Bucharest University Faculty of Physics 2021 Meeting
Section: Physics and Technology of Renewable and Alternative Energy Sources
Title:
Gas pressure diagnosis in fuel cells by electrochemical impedance spectroscopy
Authors:
Adina DOBRIN (1), Adriana BĂLAN (1,2)
Affiliation:
1) University of Bucharest, Faculty of Physics, Bucharest-Măgurele, 405 Atomistilor str., Bucharest-Măgurele, Romania
2) University of Bucharest, Faculty of Physics, 3Nano-SAE Research Centre, 405 Atomistilor str., PO Box MG-38, Bucharest-Măgurele, Romania
E-mail
adriana.balan@unibuc.ro
Keywords:
fuel cell, impedance, circuit modelling, system diagnostics
Abstract:
In the general context of climate-changing and environmental pollution, fuel cells have become an attractive candidate as a green energy source for automotive, stationary generation and portable power applications. Nevertheless, further improvement in performances and operating control parameters, including reaction activity, durability, operating temperatures or gas fueling conditions, are required for large-scale commercialization of proton exchange membrane fuel cell (PEMFC). Electrochemical impedance spectroscopy (EIS) is a powerful tool in the diagnosis and fundamental understanding of PEMFC performances. This paper deals with EIS analysis of gas pressure influence on the PEMFC. Gas pressure can affect redox reaction rates and mass transport in PEMFCs, which impact directly system performances. Therefore, EIS sensitivity to inlet gas pressure is employed for optimizing operating conditions and also for the diagnosis of cell malfunctioning.
Acknowledgement:
This work was supported by a grant of the Ministry of Research, Innovation and Digitization, CNCS/CCCDI – UEFISCDI, project number TE 205/2021, within PNCDI III.
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