Meyer, Q;
Ronaszegi, K;
Pei-June, G;
Curnick, O;
Ashton, S;
Reisch, T;
Adcock, P;
... Brett, DJL; + view all
(2015)
Optimisation of air cooled, open-cathode fuel cells: Current of lowest resistance and electro-thermal performance mapping.
Journal of Power Sources
, 291
pp. 261-269.
10.1016/j.jpowsour.2015.04.101.
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Abstract
Selecting the ideal operating point for a fuel cell depends on the application and consequent trade-off between efficiency, power density and various operating considerations. A systematic methodology for determining the optimal operating point for fuel cells is lacking; there is also the need for a single-value metric to describe and compare fuel cell performance. This work shows how the ‘current of lowest resistance’ can be accurately measured using electrochemical impedance spectroscopy and used as a useful metric of fuel cell performance. This, along with other measures, is then used to generate an ‘electro-thermal performance map’ of fuel cell operation. A commercial air-cooled open-cathode fuel cell is used to demonstrate how the approach can be used; in this case leading to the identification of the optimum operating temperature of ∼45 °C.
| Type: | Article |
|---|---|
| Title: | Optimisation of air cooled, open-cathode fuel cells: Current of lowest resistance and electro-thermal performance mapping |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1016/j.jpowsour.2015.04.101 |
| Publisher version: | http://dx.doi.org/10.1016/j.jpowsour.2015.04.101 |
| Language: | English |
| Additional information: | © 2015 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/). |
| Keywords: | Current of lowest resistance, Electrochemical impedance spectroscopy, Optimum operating temperature, Air-cooled open-cathode polymer electrolyte fuel cell, Forced convection, Electro-thermal performance mapping |
| 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/1471640 |
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