Extending the life of maintenance-free lead/acid batteries by etching of grids in sodium hydroxide

Roland De Marco; A Rochliadi; J Jones

doi:10.1023/A:1017924630326

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Extending the life of maintenance-free lead/acid batteries by etching of grids in sodium hydroxide

Journal article

Peer reviewed

Extending the life of maintenance-free lead/acid batteries by etching of grids in sodium hydroxide

Roland De Marco, A Rochliadi and J Jones

Journal of Applied Electrochemistry, Vol.31(9), pp.953-959

2001

DOI: https://doi.org/10.1023/A:1017924630326

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Abstract

grid corrosion layer

lead/acid battery

plate passivation

positive active material

premature capacity loss

The surfaces of lead-calcium-tin grids etched in NaOH have been characterized by using X-ray photoelectron spectroscopy (XPS) and environmental scanning electron microscopy (ESEM). It is shown that the basic lead carbonate phase, hydrocerussite, present on the surfaces of lead-calcium-tin grids is removed via etching in NaOH, due presumably to the dissolution of lead(II) salts as water soluble lead(II) complexes. Charge/discharge cycling data for non-antimonial batteries fabricated by using untreated and grid etched 2 V cells have demonstrated that the removal of grid surface hydrocerussite diminishes the rate of premature capacity loss displayed by non-antimonial batteries in the early stages of cycling. Furthermore, scanning electron microscopy (SEM) of the corrosion layers of positive plates for untreated and grid etched cells, in the initial stages of cycling, demonstrated that the removal of grid surface hydrocerussite amelÃorates the problem caused by passivation of the grid corrosion layer through the formation of an uninterrupted underlayer of PbO.

Details

Title: Extending the life of maintenance-free lead/acid batteries by etching of grids in sodium hydroxide
Authors: Roland De Marco (Author) - Curtin University of Technology
A Rochliadi (Author) - Curtin University of Technology
J Jones (Author) - Curtin University of Technology
Publication details: Journal of Applied Electrochemistry, Vol.31(9), pp.953-959
Publisher: Springer Netherlands
Date published: 2001
DOI: 10.1023/A:1017924630326
ISSN: 0021-891X
Organisation Unit: University of the Sunshine Coast, Queensland; Office of the Deputy Vice-Chancellor (Research and Innovation)
Language: English
Record Identifier: 99448901102621
Output Type: Journal article

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