Alkaline Battery Separators with High Electrolyte Absorption from Forced Assembly Coextruded Composite Tapes

In this work, two-component fibrous separators with high electrolyte absorption were fabricated by the delamination of oriented polymer tape which was produced using a unique coextrusion and multiplication process. Two different separators were created from polypropylene/high-density polyethylene (P...

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Bibliographic Details
Published in:Industrial & engineering chemistry research 2020-03, Vol.59 (12), p.5227-5237
Main Authors: Wang, Xinting, Lin, Jialu, Viswanath, Vidya, Olah, Andrew, Baer, Eric
Format: Article
Language:English
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Summary:In this work, two-component fibrous separators with high electrolyte absorption were fabricated by the delamination of oriented polymer tape which was produced using a unique coextrusion and multiplication process. Two different separators were created from polypropylene/high-density polyethylene (PP/HDPE) and polypropylene/polyamide 6 (PP/PA6) by this process. The separators have a pore size of 10 μm, high porosity, and high surface area. The electrolyte absorption (KOH uptake) of PP/HDPE separators and PP/PA6 separators are almost 3 times higher than that of commercial separators. The battery performance of the PP/HDPE separators and the PP/PA6 separators were evaluated in a coin cell battery configuration. The charge–discharge efficiency of coin cells made from the PP/PA6 separator is found to be 6% higher than the commercial separators.
ISSN:0888-5885
1520-5045
DOI:10.1021/acs.iecr.9b04757