Single Electrode Heat Effects: II. Single Electrode Heat Evolution

Torben Jacobsen, G. H. J. Broers

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The heat evolution at a single irreversibly working electrode is treated onthe basis of the Brønsted heat principle. The resulting equation is analogous to the expression for the total heat evolution in a galvanic cellwith the exception that –DeltaS is substituted by the Peltier entropy, DeltaSP, of theelectrode reaction. eta is the overvoltage at the electrode. This equation is appliedto a high temperature carbonate fuel cell. It is shown that the Peltier entropyterm by far exceeds the heat production due to the irreversible losses, and thatthe main part of heat evolved at the cathode is reabsorbed at the anode.Finally, effects like thermal corrosion, caused by internal temperature gradients,are discussed.
Original languageEnglish
JournalJournal of The Electrochemical Society
Issue number2
Pages (from-to)210-214
Publication statusPublished - 1977

Bibliographical note

© The Electrochemical Society, Inc. 1977. All rights reserved. Except as provided under U.S. copyright law, this work may not be reproduced, resold, distributed, or modified without the express permission of The Electrochemical Society (ECS).


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