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US 12,183,947 B2Granted
Separator, including composite coating layer containing inorganic particles and hydrophilic organic compound arranged on web of organic fibers, preparation method of same, and secondary battery comprising same
AssigneeSamsung SDI Co., Ltd.
InventorJungjin Moon
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Abstract
The present disclosure relates to a separator, a method of preparing the separator, and a secondary battery comprising the separator, the separator including: a web structure of organic fibers; and a composite coating layer arranged on the organic fibers, wherein the composite coating layer includes heat-resistant inorganic particles and a hydrophilic organic compound.
Claims19
A separator comprising:
- a web structure of organic fibers;
- and
- a composite coating layer arranged on the organic fibers,
- wherein the composite coating layer includes heat-resistant inorganic particles and a hydrophilic organic compound, and has an atomic ratio of aluminum atoms, included in the heat-resistant inorganic particles, to nitrogen atoms, included in the hydrophilic organic compound, of 1:1 to 2:1, and
- wherein the hydrophilic organic compound forms a self-assembled monolayer and comprises an organic compound including a hydroxyl group and an amine group.
2 more elements
A method of preparing a separator, the method comprising:
- providing a web structure of organic fibers;
- vapor-depositing heat-resistant inorganic particles;
- and
- forming a composite coating layer including a hydrophilic organic compound, the hydrophilic organic compound comprises an organic compound including a hydroxyl group and an amine group, and having an atomic ratio of aluminum atoms, included in the heat-resistant inorganic particles, to nitrogen atoms, included in the hydrophilic organic compound, of 1:1 to 2:1.
1 more element
Dependencies are inferred from the claim text.