Positive electrode material and battery using the same

Details Positive electrode material and battery using the same Positive electrode material and battery using the same

2006-04-18

2006-04-18

Dove, Tracy (Department: 1745)

Chemistry: electrical current producing apparatus, product, and

Current producing cell, elements, subcombinations and...

Electrode

C429S221000, C429S224000

Reexamination Certificate

active

07029795

ABSTRACT:
The invention provides a positive electrode material and a battery using the same which can achieve a higher discharge voltage and which can obtain excellent charge-and-discharge properties, without reducing the capacity. A positive electrode (12) and a negative electrode (14) are configured through a separator (15) in between. The positive electrode (12) contains a compound expressed by a general formula Li1+xMnyFezPO4(wherein x, y and z are values within ranges of 0<x<0.1, 0.5<y<0.95, and 0.9<y+z≦1, respectively). According to the compound, the higher discharge voltage can be obtained due to Mn, the Jahn Teller effect of Mn3+can be attenuated and furthermore distortion of the crystal structure and the reduction of the capacity can be inhibited due to Fe and the excess Li.

REFERENCES:
patent: 6720113 (2004-04-01), Goto et al.
patent: 6749967 (2004-06-01), Li et al.
patent: 2000-12031 (2000-01-01), None
patent: 2001-110455 (2001-04-01), None
patent: 2001-196061 (2001-07-01), None
patent: 2001-223007 (2001-08-01), None
patent: 2001-307732 (2001-11-01), None
patent: 2001-338694 (2001-12-01), None
patent: WO 97/40541 (1997-10-01), None

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