Crosslinked-interpenetrating networked block copolymer electrolytes for lithium batteries
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United States of America Patent
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Dec 29, 2020
Grant Date -
Sep 7, 2017
app pub date -
Mar 3, 2017
filing date -
Mar 5, 2016
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Abstract
A novel solid block copolymer electrolyte material is described. The material has first structural polymer blocks that make up a structural domain that has a modulus greater than 1×107 Pa at 25° C. There are also second ionically-conductive polymer blocks and a salt that make up an ionically-conductive domain adjacent to the structural domain. Along with the second ionically-conductive polymers, there is also a crosslinked network of third polymers, which interpenetrates the ionically-conductive domain. The third polymers are miscible with the second polymers. It has been shown that the addition of such an interpenetrating, crosslinked polymer network to the ionically-conductive domain improves the mechanical properties of the block copolymer electrolyte with no sacrifice in ionic conductivity.
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