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US 2024/0014531 A1Published application
Fluorine-free insulating slurry, positive electrode sheet, secondary battery, battery module, battery pack, and electrical apparatus
AssigneeContemporary Amperex Technology Co., Limited
InventorsShaohua AI, Chengdong SUN, Yi ZHENG
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Abstract
A fluorine-free insulating slurry includes a first resin selected from resins with a glass transition temperature of above 80° C. and a liquid absorbency in a standard electrolyte solution below 15%, a second resin selected from resins with a glass transition temperature below −5° C., an inorganic filler, and an organic solvent.
Claims18
A fluorine-free insulating slurry, comprising:
- a first resin selected from resins with a glass transition temperature of above 80° C. and a liquid absorbency in a standard electrolyte solution below 15%;
- a second resin selected from resins with a glass transition temperature below −5° C.;
- an inorganic filler;
- and
- an organic solvent.
2 more elements
A positive electrode sheet, comprising:
- a positive electrode current collector;
- a positive electrode active material layer, located on at least part of a surface of the positive electrode current collector;
- and
- a fluorine-free insulating coating, located on a surface of the positive electrode current collector and adjoining an edge of the positive electrode active material layer;
- wherein the fluorine-free insulating coating is a layer formed by drying a fluorine-free insulating slurry comprising:
- a first resin selected from resins with a glass transition temperature of above 80° C. and a liquid absorbency in a standard electrolyte solution below 15%;
- a second resin selected from resins with a glass transition temperature below −5° C.;
- an inorganic filler;
- and
- an organic solvent.
7 more elements
Dependencies are inferred from the claim text.