Electrode-active anion-deficient non-stoichiometric lithium...

Details Electrode-active anion-deficient non-stoichiometric lithium... Electrode-active anion-deficient non-stoichiometric lithium...

2010-01-12

2010-12-28

Ryan, Patrick (Department: 1795)

Chemistry: electrical current producing apparatus, product, and

Current producing cell, elements, subcombinations and...

Electrode

C429S210000, C429S218100

Reexamination Certificate

active

07858233

ABSTRACT:
The invention provides an anion-deficient non-stoichiometric lithium iron phosphate as an electrode-active material, which is represented by the formula Li1−xFe(PO4)1−y, wherein 0<x≦0.15 and 0<y≦0.05. The invention provides a method for preparing said Li1−xFe(PO4)1−y, which comprises preparing a precursor of lithium iron phosphate; mixing said precursor with water under reaction conditions of 200˜700° C. and 180˜550 bar to produce lithium iron phosphate; and calcining, or granulating and calcining the resultant compound. The invention also provides electrochemical devices employing said Li1−xFe(PO4)1−yas an electrode-active material.

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