We present a reproducible method of synthesizing tetrabasic lead sulfate (4PbO · PbSO4) which produces discrete elongated crystals approximately 22 microns long. Tetrabasic lead sulfate undergoes anodic conversion to PbO2while maintaining the characteristic morphology of the 4PbO · PbSO4crystals. This results in lead-acid battery positive plates having performance characteristics superior to those fabricated from conventional paste formulations. We furnish data showing the performance of 4PbO · PbSO4positive plates as a function of plate porosity and present stress cycling data, comparing it with the behavior of typical conventional positive plates.
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Biagetti et al. (1970) studied this question.
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