Positive electrode material for lithium secondary cell and...

Details Positive electrode material for lithium secondary cell and... Positive electrode material for lithium secondary cell and...

2004-08-16

2009-11-10

Cantelmo, Gregg (Department: 1795)

Chemistry: electrical current producing apparatus, product, and

Current producing cell, elements, subcombinations and...

Electrode

C429S231300, C429S231600, C423S594600, C423S464000

Reexamination Certificate

active

07615315

ABSTRACT:
A positive electrode material for a lithium secondary battery for high voltage high capacity use exhibiting high cycle durability and high safety. The positive electrode material is composed of particles having a composition represented by the general formula: LiaCobMgcAdOeFf(A is the group 6 transition element or the group 14 element, 0.90≦a≦1.10, 0.97≦b≦1.00, 0.0001≦c≦0.03, 0.0001≦d≦0.03, 1.98≦e≦2.02, 0≦f≦0.02 and 0.0001≦c+d≦0.03), and magnesium, the element A and fluorine exist uniformly in the vicinity of the surfaces of the particles.

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