Raw Material Composition, a Thermosetting PAN-Based Intermediate Film and a Preparation Method Therefor, and an Electrochemical Device
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United States of America
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Nov 28, 2024
app pub date -
Dec 26, 2022
filing date -
Dec 26, 2022
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Abstract
Provided in the present disclosure are a raw material composition, a thermosetting PAN-based intermediate film and a preparation method therefor, and an electrochemical device. The raw material composition includes a thermosetting PAN-based polymer material, a lithium salt, and a modification additive; a mass ratio of the thermosetting PAN-based polymer material to the lithium salt is 20:1-3:1, and a mass ratio of the thermosetting PAN-based polymer material to the modification additive is 18:1-3:1; and the modification additive includes one of or a combination of several of a carbonate modification additive, a nitrile modification additive, and an ionic liquid modification additive. According to the present disclosure, the use of a modification additive may reduce a melting point of a PAN-based polymer and ensure that the PAN-based polymer is not thermally decomposed in a melting process, and may also improve the lithium ion conductivity of a film.
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