Composite binder composition for all-solid-state battery, electrode slurry comprising same, and method of manufacturing electrode for all-solid-state battery using electrode slurry
AssigneesHyundai Motor Company, Kia Corporation, Seoul National University R&Db Foundation
InventorsSang Mo KIM, Tae Young KWON, Ju Yeon LEE, Sung Hoo JUNG, Jang Wook CHOI, Ji Eun LEE
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Abstract
A composite binder composition for an all-solid-state battery includes: a first polymer comprising a repeating structure represented by Chemical Formula 1a or Chemical Formula 1b below, and a second polymer comprising at least one selected from a group consisting of diene-based rubber, polysiloxane, and combinations thereof:
Claims16
A binder composition for an all-solid-state battery, the binder composition comprising:
- a first polymer comprising a repeating structure represented by Chemical Formula 1a or Chemical Formula 1b below:
- and
- a second polymer comprising at least one selected from a group consisting of diene-based rubber, polysiloxane, and combinations thereof,
- wherein in Chemical Formula 1a, R1 comprises hydrogen, a halogen element or a C1-4 alkyl group, R2 comprises an unsubstituted C1-4 alkyl group or an ether group in which a portion of carbon atoms of the alkyl group is substituted with oxygen, and m is an integer of 40 to 2,000, and
- in Chemical Formula 1b, R3 comprises hydrogen, a halogen element or a C1-4 alkyl group, x is an integer of 0 to 6, and m is an integer of 40 to 2,000.
An electrode slurry for an all-solid-state battery, the electrode slurry comprising:
- a binder solution comprising a binder composition and a solvent;
- an electrode active material;
- a conductive material;
- and
- a solid electrolyte,
- wherein the binder composition comprises:
- a first polymer comprising a repeating structure represented by Chemical Formula 1a or Chemical Formula 1b below:
- and
- a second polymer comprising at least one selected from a group consisting of diene-based rubber, polysiloxane, and combinations thereof,
- wherein in Chemical Formula 1a, R1 comprises hydrogen, a halogen element or a C1-4 alkyl group, R2 comprises an unsubstituted C1-4 alkyl group or an ether group in which a portion of carbon atoms of the alkyl group is substituted with oxygen, and m is an integer of 40 to 2,000, and
- in Chemical Formula 1b, R3 comprises hydrogen, a halogen element or a C1-4 alkyl group, x is an integer of 0 to 6, and m is an integer of 40 to 2,000.
A method of manufacturing an electrode for an all-solid-state battery, the method comprising:
- preparing a binder solution comprising a binder composition and a solvent;
- manufacturing an electrode slurry by mixing the binder solution, an electrode active material, a conductive material and a solid electrolyte;
- and
- forming an electrode by applying the electrode slurry on a substrate and performing heat treatment,
- wherein the binder composition comprises:
- a first polymer comprising a repeating structure represented by Chemical Formula 1a or Chemical Formula 1b below:
- and
- a second polymer comprising at least one selected from a group consisting of diene-based rubber, polysiloxane, and combinations thereof,
- wherein in Chemical Formula 1a, R1 comprises hydrogen, a halogen element or a C1-4 alkyl group, R2 comprises an unsubstituted C1-4 alkyl group or an ether group in which a portion of carbon atoms of the alkyl group is substituted with oxygen, and m is an integer of 40 to 2,000, and
- in Chemical Formula 1b, R3 comprises hydrogen, a halogen element or a C1-4 alkyl group, x is an integer of 0 to 6, and m is an integer of 40 to 2,000.
Dependencies are inferred from the claim text.