Chemistry: electrical current producing apparatus – product – and – Current producing cell – elements – subcombinations and... – Electrode
Reexamination Certificate
2004-03-23
2010-12-14
Hodge, Robert (Department: 1795)
Chemistry: electrical current producing apparatus, product, and
Current producing cell, elements, subcombinations and...
Electrode
C429S223000, C429S231300, C429S231400, C429S231950, C429S094000, C252S182100, C423S594400, C423S594600
Reexamination Certificate
active
07851088
ABSTRACT:
Disclosed is a positive electrode active material for a nonaqueous electrolyte secondary battery having at least a lithium-transition metal composite oxide of a layer structure, in which an existence ratio of at least one selected from the group consisting of elements which may become tetravalent and magnesium is 20% or more on a surface of the lithium-transition metal composite oxide. By use of this positive electrode active material, a nonaqueous electrolyte secondary battery having excellent battery characteristics, specifically, having excellent high rate characteristics, cycle characteristics, low-temperature characteristics, thermal stability, and the like, under the even more harsh environment for use can be realized.
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Official English Translation of JP 04-319260 published Nov. 10, 1992.
Fujino Kenji
Kondo Takeyuki
Morizaki Masuhiro
Oba Takeshi
Seyama Jun
Hodge Robert
Nichia Corporation
Oliff & Berridg,e PLC
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