Type of lithium iron phosphate cathode active material and...

Details Type of lithium iron phosphate cathode active material and... Type of lithium iron phosphate cathode active material and...

2008-04-15

2011-12-13

Kalafut, Stephen J. (Department: 1727)

Chemistry of inorganic compounds

Phosphorus or compound thereof

Oxygen containing

C429S221000

Reexamination Certificate

active

08075861

ABSTRACT:
This invention provides a type of lithium iron phosphate cathode active material and its method of synthesis. Said cathode active material contains the sintering product of lithium iron phosphate and a mixture. Said mixture comprises of two or more metal oxides where the metal elements are selected from groups II A, III A, IV A, V A, III B, IV B, or V B, and where the weight of one metal oxide is 0.5-20% of the weight of the other metal oxide. Greatly increased capacity can be achieved in rechargeable lithium-ion batteries using the lithium iron phosphate cathode active material provided by this invention.

REFERENCES:
patent: 2004/0033360 (2004-02-01), Armand et al.
patent: 2009/0220858 (2009-09-01), Cheng et al.
patent: 1797823 (2006-05-01), None

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