Modeling of Porous Insertion Electrodes with Liquid Electrolyte

Keld West, Torben Jacobsen, Sven Atlung

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    The dynamics of porous insertion electrodes during charge or discharge is described by a simplified mathematicalmodel, accounting for the coupled transport in electrode and electrolyte phases. A numerical method to evaluate theresponse of this model to either controlled potential or controlled current is outlined, and numerical results for thedischarge of a porous TiS2-electrode in an idealized organic electrolyte are presented. It is demonstrated how electrolyte depletion is the principal limiting factor in the capacity obtained during discharge of this electrode system. Thisdepletion is a consequence of the mobility of the ions not inserted, hence the performance of this type of electrode isoptimized by choosing electrolytes with transport number as close to unity as possible for the inserted ion.
    Original languageEnglish
    JournalJournal of The Electrochemical Society
    Issue number7
    Pages (from-to)1480-1485
    Publication statusPublished - 1982

    Bibliographical note

    Copyright The Electrochemical Society, Inc. [1982]. 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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