Positive electrode active material and method of producing...

Details Positive electrode active material and method of producing... Positive electrode active material and method of producing...

2011-06-21

2011-06-21

Kopec, Mark (Department: 1761)

Compositions

Electrically conductive or emissive compositions

Metal compound containing

C252S521200, C429S224000

Reexamination Certificate

active

07964118

ABSTRACT:
The present invention provides an olivine-type positive electrode active material that is an inexpensive and very safe positive electrode active material that also exhibits excellent battery properties even at high energy densities. The present invention also provides a method of producing this olivine-type positive electrode active material and a nonaqueous electrolyte battery that has a positive electrode that contains this olivine-type positive electrode active material. The present invention relates to a positive electrode active material that comprises an olivine-type lithium manganese phosphate compound represented by the following general formula (1)in-line-formulae description="In-line Formulae" end="lead"?LixMnyMaPO4  (1)in-line-formulae description="In-line Formulae" end="tail"?(in the formula, 0<x<2, 0<y<1, 0<a<1, and M is at least one metal element selected from the group consisting of Co, Ni, Fe, Zn, Cu, Ti, Sn, Zr, V, and Al) and that has a particle diameter of 10 to 500 nm.

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