SULFONATED BLOCK COPOLYMER SEPARATOR AND ENERGY STORAGE DEVICE
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United States of America
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Mar 6, 2025
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Sep 5, 2024
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Sep 5, 2024
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The disclosure relates to a functionalized styrenic block copolymers (SSBC) in the form of a lithiated-sulfonated hydrogenated styrenic block copolymer (SO3Li-SBC). The composition is obtained by sulfonation of SBC precursor followed by neutralization of the ionic block of the sulfonated block copolymer (SSBC) by Li+ ion, modifying characteristics for use as a separator in energy storage device. The separator has high ionic conductivity, a high dimensional stability/low thermal contraction and good mechanical stability, more particularly a high elongation at break.
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