ELECTROLYTE COMPOSITE FOR LITHIUM-SULFUR BATTERY, ELECTROCHEMICAL DEVICE COMPRISING SAME, AND PREPARATION METHOD THEREFOR

• Main Authors: CHO, Sung-Ju, PARK, Eunkyung, JANG, Minchul, YANG, Doo Kyung, LEE, Sang-Young, JUNG, Bora
• Format: Patent
• Language: English; French; German
• Published: 10.04.2024
• Subjects: AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G; BASIC ELECTRIC ELEMENTS; CABLES; CHEMISTRY; COMPOSITIONS BASED THEREON; CONDUCTORS; ELECTRICITY; GENERAL PROCESSES OF COMPOUNDING; INSULATORS; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING ORDIELECTRIC PROPERTIES; THEIR PREPARATION OR CHEMICAL WORKING-UP; WORKING-UP

The present invention discloses an electrolyte complex for a lithium-sulfur battery, which can improve battery capacity and life characteristic by applying different solid electrolytes to each of the positive electrode and the negative electrode of an electrochemical device, and can reduce the interfacial resistance between the electrolyte and the electrode by integrating the solid electrolyte and the electrode; an electrochemical device including the same; and a method for preparing the same. The electrolyte complex for a lithium-sulfur battery comprises two kinds of phase-separated solid electrolytes, wherein the first electrolyte positioned to the positive electrode side and the second electrolyte positioned to the negative electrode side form a layered structure.