US 2006/0134526 A1 · Lithium ion secondary battery

Abstract

A lithium ion secondary battery is provided. The lithium ion secondary battery generally comprises an electrode assembly, a container for accommodating the electrode assembly; and an electrolyte. The electrode assembly comprises two electrodes having opposite polarities and a separator. The separator comprises a porous membrane comprising clusters of ceramic particles. The porous membrane is formed by bonding the particle clusters with a binder. Each particle cluster is formed either by sintering or by dissolving and re-crystallizing all or a portion of the ceramic particles. The ceramic particles comprise a ceramic material having a band gap. Each particle cluster may have the shape of a grape bunch or a lamina, and may be formed by laminating scale or flake shaped ceramic particles.

Claims41

Dependent claims

A lithium ion secondary battery comprising:

an electrode assembly comprising:
first and second electrodes having opposite polarities, and
a separator comprising a porous membrane, the porous membrane comprising clusters of ceramic particles and a binder, wherein the ceramic particles comprise a ceramic material having a band gap;
a container for accommodating the electrode assembly, wherein the first and second electrodes are positioned facing each other;
and
an electrolyte.

3 more elements

Dependencies are inferred from the claim text.

Facts

Application

11/283,604Filed 17 Nov 2005

Priority

KR 10-2004-009406717 Nov 2004

Published

22 Jun 2006

Term ends

Not estimatedThe source records don’t support an estimate.

Classification9 codes

H01M 50/446
Separators, membranes or diaphragms characterised by the material: composite material consisting of a mixture of organic and inorganic materials
H01M 50/403
Separators; Membranes; Diaphragms; Spacing elements inside cells: manufacturing processes of separators, membranes or diaphragms
H01M 50/463
Separators; Membranes; Diaphragms; Spacing elements inside cells: separators, membranes or diaphragms characterised by their shape
H01M 10/0525
Li-accumulators: rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries

Lithium ion secondary battery

Life of this patent

Lithium ion secondary battery

Life of this patent

Abstract

Claims41