A composite cathode for a solid-state battery and a preparation method thereof

A composite cathode for a solid-state battery and a preparation method thereof

The invention relates to a composite cathode for a solid-state battery. The composite cathode comprises a composite cathode sheet and an electrolyte membrane formed by coating solid-state electrolyteslurry on the composite cathode sheet. The composite cathode sheet is formed by coating composite cat...

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Hauptverfasser: GAN CHAOLUN, YOU CHUNQIN, XU KAICHEN, WANG FENG
Format: Patent
Sprache:chi ; eng
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BASIC ELECTRIC ELEMENTS
ELECTRICITY
PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY
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creator GAN CHAOLUN
YOU CHUNQIN
XU KAICHEN
WANG FENG
description The invention relates to a composite cathode for a solid-state battery. The composite cathode comprises a composite cathode sheet and an electrolyte membrane formed by coating solid-state electrolyteslurry on the composite cathode sheet. The composite cathode sheet is formed by coating composite cathode slurry on a cathode current collector. The solid-state electrolyte slurry comprises a polymerand a lithium salt in a mass ratio of 1 to 5. The composite positive electrode slurry comprises a positive electrode active material, a conductive agent, a binder, a polymer and a lithium salt in a mass ratio of 250 - 350: 5 - 35: 5 - 35: 1 - 5: 1. The invention effectively reduces the internal resistance of the interface, improves the interface impedance, reduces the ion transmission distance, thereby improving the capacity of the solid-state battery, effectively improving the tensile strength, and thus improving the capacity and safety performance of the solid-state battery. In addition, thesolid-state battery of the
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The composite cathode comprises a composite cathode sheet and an electrolyte membrane formed by coating solid-state electrolyteslurry on the composite cathode sheet. The composite cathode sheet is formed by coating composite cathode slurry on a cathode current collector. The solid-state electrolyte slurry comprises a polymerand a lithium salt in a mass ratio of 1 to 5. The composite positive electrode slurry comprises a positive electrode active material, a conductive agent, a binder, a polymer and a lithium salt in a mass ratio of 250 - 350: 5 - 35: 5 - 35: 1 - 5: 1. The invention effectively reduces the internal resistance of the interface, improves the interface impedance, reduces the ion transmission distance, thereby improving the capacity of the solid-state battery, effectively improving the tensile strength, and thus improving the capacity and safety performance of the solid-state battery. 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subjects BASIC ELECTRIC ELEMENTS
ELECTRICITY
PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY
title A composite cathode for a solid-state battery and a preparation method thereof
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