US 2017/0288192 A1 · Lithium Ion Battery and Separator Thereof

Abstract

The present invention provides a separator for a lithium ion battery. The separator includes a substrate, an inorganic coating on at least one surface of the substrate, and an organic coating on at least one surface of the inorganic coating, wherein the coating density of the organic coating is 0.1 mg/1540.25 mm2˜10 mg/1540.25 mm2. Compared with the prior art, the separator of the present invention can improve the deformation of the lithium ion battery and enhance the expansion force that the lithium ion battery can endure, thereby improving the cycle life of the lithium ion battery. In addition, the present invention also provides a lithium ion battery having the separator of the present invention.

Claims10

Dependent claims

A separator for a lithium ion battery, comprising a substrate and an organic coating disposed directly or indirectly on at least one surface of the substrate, wherein a coating density of the organic coating is 0.1 mg/1540.25 mm2˜10 mg/1540.25 mm2.

Dependencies are inferred from the claim text.

Facts

Application

15/475,167Filed 31 Mar 2017

Priority

CN 201610204611.71 Apr 2016

Published

5 Oct 2017

Term ends

Not estimatedThe source records don’t support an estimate.

Classification17 codes

H01M 10/0525
Li-accumulators: rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
H01M 10/0587
Construction or manufacture: of accumulators having only wound construction elements, i.e. wound positive electrodes, wound negative electrodes…
H01M 50/409
Separators; Membranes; Diaphragms; Spacing elements inside cells: separators, membranes or diaphragms characterised by the material
H01M 50/414
Organic material: synthetic resins, e.g. thermoplastics or thermosetting resins

Lithium Ion Battery and Separator Thereof

Life of this patent

Lithium Ion Battery and Separator Thereof

Life of this patent

Abstract

Claims10