Meyer, Q;
Ronaszegi, K;
Robinson, JB;
Noorkami, M;
Curnick, O;
Ashton, S;
Danelyan, A;
... Brett, DJL; + view all
(2015)
Combined current and temperature mapping in an air-cooled, open-cathode polymer electrolyte fuel cell under steady-state and dynamic conditions.
Journal of Power Sources
, 297
pp. 315-322.
10.1016/j.jpowsour.2015.07.069.
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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.
| Type: | Article |
|---|---|
| Title: | Combined current and temperature mapping in an air-cooled, open-cathode polymer electrolyte fuel cell under steady-state and dynamic conditions |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1016/j.jpowsour.2015.07.069 |
| Publisher version: | http://dx.doi.org/10.1016/j.jpowsour.2015.07.069 |
| Language: | English |
| Additional information: | Copyright © 2015. This manuscript version is published under a Creative Commons Attribution Non-commercial Non-derivative 4.0 International licence (CC BY-NC-ND 4.0). This licence allows you to share, copy, distribute and transmit the work for personal and non-commercial use providing author and publisher attribution is clearly stated. Further details about CC BY licences are available at http://creativecommons.org/licenses/by/4.0. |
| Keywords: | Current mapping, Temperature mapping, Air-breathing fuel cell, Performance optimisation, Spatiotemporal electro-thermal analysis |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Chemical Engineering |
| URI: | https://discovery.ucl.ac.uk/id/eprint/1478261 |
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