INTEGRATED POLYPHASE HYDROGEL AND PREPARATION METHOD AND APPLICATION THEREOF IN FLEXIBLE AND STRETCHABLE SUPERCAPACITOR
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United States of America
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Jan 30, 2025
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Oct 10, 2024
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Oct 10, 2024
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Abstract
The present invention discloses an integrated multiphase hydrogel, and a preparation method and application thereof in flexible and stretchable supercapacitors. The integrated multiphase hydrogel of the present invention is formed by implanting semigel electrode into semigel electrolyte by injection or printing, wherein the electrolyte hydrogel is prepared by polyvinyl alcohol, phytic acid and sulfuric acid. The electrode hydrogel is prepared from heteropoly acid, polyvinyl alcohol, phytic acid, ammonium persulfate and aniline by heating and then freeze thawing. The hydrogel of the present invention can be directly used as anode and cathode of stretchable electrode of flexible and stretchable supercapacitor without any post-processing. The electrolyte hydrogel can be used as both stretchable electrolyte and elastic substrate. The prepared flexible and stretchable supercapacitor can maintain superior interfacial toughness, have excellent charging/discharging cycle stability, and have good capacitance retention under mechanical deformation conditions such as bending, twisting and stretching.
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