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    An electrochemical impedance spectroscopy and scanning electron microscopy study of the influence of positive plate compression on the electrochemical behaviour of lead-acid batteries

    Access Status
    Fulltext not available
    Authors
    De Marco, Roland
    Lowe, Alexander
    Sercombe, Matthew
    Singh, P.
    Date
    2006
    Type
    Journal Article
    
    Metadata
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    Citation
    De Marco, Roland and Lowe, Alexander and Sercombe, Matthew and Singh, Pritam. 2006. An electrochemical impedance spectroscopy and scanning electron microscopy study of the influence of positive plate compression on the electrochemical behaviour of lead-acid batteries. Electrochimica Acta 51: 2088-2095.
    Source Title
    Electrochimica Acta
    DOI
    10.1016/j.electacta.2005.07.019
    Faculty
    Department of Applied Chemistry
    Division of Engineering, Science and Computing
    Faculty of Science
    Remarks

    De Marco, Roland and Lowe, Alexander and Sercombe, Matthew and Singh, Pritam (2006) An electrochemical impedance spectroscopy and scanning electron microscopy study of the influence of positive plate compression on the electrochemical behaviour of lead-acid batteries, Electrochimica Acta 51:2088-2095.

    The link to this article is:

    http://dx.doi.org/10.1016/j.electacta.2005.07.019

    Copyright 2006 Elsevier B.V. All rights reserved

    URI
    http://hdl.handle.net/20.500.11937/38121
    Collection
    • Curtin Research Publications
    Abstract

    This study has developed an electrochemical impedance spectroscopy (EIS) method for the in situ investigation of the influence of positive plate compression on the electrochemical behaviour of lead-acid batteries during charge/discharge cycling. The EIS data for a fully charged and fully discharged battery are internally consistent with the expected kinetics of a battery in the opposite states of charge, and demonstrate that EIS measurements may be recorded with a high level of reproducibility. Furthermore, this study has necessitated the development of a special cell incorporating horizontally orientated battery plates that can be subjected to elevated pressure through the stacking of lead bricks on top of the cell, as well as a physically robust reference electrode system that can withstand the application of pressure. For this purpose, a platinum-wire pseudo-reference electrode has been developed, and has been shown to exhibit sufficient electrode stability over the period of an EIS recording, enabling the measurement of reproducible and meaningful EIS data. Additionally, the influence of positive plate compression on the behaviour of the lead-acid battery has been investigated by using scanning electron microscopy (SEM). Clearly, the experimental data show that plate compression enhances significantly the kinetics and concomitant performance of the lead-acid battery, and this is related to the enhanced reactivity of the active material, as rationalized by using the agglomeration-of-spheres (AOS) model.

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