ELECTRODE-ACTIVE ANION-DEFICIENT LITHIUM TRANSITION-METAL PHOSPHATE, METHOD FOR PREPARING THE SAME, AND ELECTROCHEMICAL DEVICE USING THE SAME

The invention provides an anion-deficient lithium transition-metal phosphate as an electrode-active material, which is represented by the chemical formula Li1−xM(PO4)1−y (0 x 0.15, 0 y 0.05). The invention provides a method for preparing said Li1−xM(PO4)1−y, which comprises preparing a precursor of...

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Main Authors HAN SOO YONG, OH SE JIN, HAN KYOO SEUNG, NAM HO SEONG, SONG KYU HO, KIM SO YEON, BAEK IN JAE, BANG EUI YONG
Format Patent
LanguageEnglish
Published 26.01.2012
Subjects
ARTIFICIAL STONE
BASIC ELECTRIC ELEMENTS
CEMENTS
CERAMICS
CHEMISTRY
COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS
COMPOUNDS THEREOF
CONCRETE
ELECTRICITY
INORGANIC CHEMISTRY
LIME, MAGNESIA
METALLURGY
NON-METALLIC ELEMENTS
PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY
REFRACTORIES
SLAG
TREATMENT OF NATURAL STONE
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Summary:The invention provides an anion-deficient lithium transition-metal phosphate as an electrode-active material, which is represented by the chemical formula Li1−xM(PO4)1−y (0 x 0.15, 0 y 0.05). The invention provides a method for preparing said Li1−xM(PO4)1−y, which comprises preparing a precursor of lithium transition-metal phosphate; mixing said precursor with water under reaction conditions of 200˜700 and 180˜550 bar to produce an anion-deficient lithium transition-metal phosphate; and calcining, or granulating and calcining the resultant compound. The invention also provides electrochemical devices employing said Li1−xM(PO4)1−y as an electrode-active material.
Bibliography:Application Number: US201013146000