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US 12,002,989 B2Granted
Separator, lithium-ion battery, and electronic device
AssigneeNingde Amperex Technology Limited
InventorsXiaohe Fan, ZengBin Wei
Life of this patent
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Abstract
A separator includes a porous substrate and a hybrid coating layer disposed on a surface of the porous substrate. The hybrid coating layer includes a plurality of polymer particles and a binder. Each polymer particle includes a shell and a cavity defined in the shell. The polymer particle can swell and damage when comes in contact with an electrolyte.
Claims18
A separator, comprising:
- a porous substrate;
- a hybrid coating layer, wherein the hybrid coating layer comprises a plurality of polymer particles and a binder, each polymer particle comprises a shell and a cavity defined in the shell, and the each polymer particle swells and damages when comes in contact with an electrolyte;
- and
- a ceramic coating layer coated on at least one surface of the porous substrate, wherein the hybrid coating layer is disposed on a surface of the ceramic coating layer and/or a surface of the porous substrate not coated with the ceramic coating layer.
1 more element
A lithium-ion battery, comprising:
- an electrolyte;
- and
- an electrode assembly comprising:
- a separator comprising a porous substrate and a hybrid coating layer, wherein the hybrid coating layer comprises a polymer and a binder, the polymer is formed by a plurality of polymer particles, and the plurality of polymer particles swell and damage when comes in contact with the electrolyte, and the polymer particle comprises a shell and a cavity defined in the shell, wherein the separator further comprises a ceramic coating layer coated on at least one surface of the porous substrate, and the hybrid coating layer is disposed on a surface of the ceramic coating layer and/or a surface of the porous substrate not coated with the ceramic coating layer.
1 more element
An electronic device, comprising:
- a lithium-ion battery comprising:
- an electrolyte;
- and
- an electrode assembly comprising:
- a separator comprising a porous substrate and a hybrid coating layer, wherein the hybrid coating layer comprises a polymer and a binder, the polymer is formed by a plurality of polymer particles and the plurality of polymer particles swell and damage when comes in contact with the electrolyte, and the polymer particle comprises a shell and a cavity defined in the shell, wherein the separator further comprises a ceramic coating layer coated on at least one surface of the porous substrate, and the hybrid coating layer is disposed on a surface of the ceramic coating layer and/or a surface of the porous substrate not coated with the ceramic coating layer.
2 more elements
Dependencies are inferred from the claim text.