Lithium ion secondary battery

Details Lithium ion secondary battery Lithium ion secondary battery

2011-03-15

2011-03-15

Alejandro, Raymond (Department: 1727)

Chemistry: electrical current producing apparatus, product, and

Current producing cell, elements, subcombinations and...

Separator, retainer or spacer insulating structure

C429S131000, C429S136000, C429S139000, C029S623100, C029S623200

Reexamination Certificate

active

07906233

ABSTRACT:
A type of lithium ion secondary battery is disclosed; therein, the positive electrode1is formed by smearing an active material on the surface of an aluminum foil body, where said active material is compound oxide(s) comprising transition metals and lithium capable of absorbing and releasing lithium ions; the negative electrode2is formed by smearing an active material on the surface of a copper foil body, where said active material includes carbon material capable of absorbing and releasing lithium ions. Both the positive and negative electrodes have conducting strips acting as current conductors6, 7. The positive and negative electrodes1, 2are in plate form and are alternately stacked on both sides of the belt-shaped separator3to form the electrode core4. The separator3wraps around said electrode plates and separates the positive and negative electrodes1, 2. This type of lithium ion secondary battery can effectively use the internal space of a battery shell, increase the battery's energy density, improve the large current discharge characteristic of the lithium ion secondary battery, the self-discharge ability, the battery's cycling capability and the battery's capacity.

REFERENCES:
patent: 2003/0194607 (2003-10-01), Huang
patent: 2003-92143 (2003-03-01), None
patent: 2003-92144 (2003-03-01), None
patent: 2003-92145 (2003-03-01), None

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