Abstract
Abstract In situ diagnostic techniques provide a means of understanding the internal workings of fuel cells so that improved designs and operating regimes can be identified. Here, for the first time, a combined current density and temperature distributed measurement system is used to generate an electro-thermal performance map of an air-cooled, air-breathing polymer electrolyte fuel cell stack operating in an air/hydrogen cross-flow configuration. Analysis is performed in low- and high-current regimes and a complex relationship between localised current density, temperature and reactant supply is identified that describes the way in which the system enters limiting performance conditions. Spatiotemporal analysis was carried out to characterise transient operations in dead-ended anode/purge mode which revealed extensive current density and temperature gradients.
Original language | English |
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Article number | 21510 |
Pages (from-to) | 315-322 |
Number of pages | 8 |
Journal | Journal of Power Sources |
Volume | 297 |
Early online date | 13 Aug 2015 |
DOIs | |
Publication status | Published - 30 Nov 2015 |
Externally published | Yes |
Keywords
- Air-breathing fuel cell
- Current mapping
- Performance optimisation
- Spatiotemporal electro-thermal analysis
- Temperature mapping
ASJC Scopus subject areas
- Renewable Energy, Sustainability and the Environment
- Energy Engineering and Power Technology
- Physical and Theoretical Chemistry
- Electrical and Electronic Engineering
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Oliver Curnick
- Centre for E-Mobility and Clean Growth - Associate Professor in Electrochemical Power Sources
Person: Teaching and Research