Title of Invention	"LITHIUM IRON PHOSPHATE HAVING OLIVINE STRUCTURE AND METHOD FOR ANALYZING THE SAME"
Abstract	Provided is an olivine-type lithium iron phosphate having a composition represented by Formula I, comprising 0.1 to 5% by weight of Li3PO4, and comprising no Li2CO3 or, if present, comprising Li2CO3 in an amount less than 0.25% by weight: Li1+aFe1-xMx(PO4-b)Xb (I) wherein M, X, a, x and b are as defined above. The lithium iron phosphate comprises no lithium carbonate (Li2CO3) or, if present, comprises the Li2CO3 in an extremely small amount, and comprises Li3PO4 having superior electrochemical stability, thermal stability and ionic conductivity, thus advantageously imparting high-temperature and storage stability as well as stability and rate properties to lithium secondary batteries, when used as a cathode active material for the lithium secondary batteries.

Title of Invention

"LITHIUM IRON PHOSPHATE HAVING OLIVINE STRUCTURE AND METHOD FOR ANALYZING THE SAME"

Abstract

Provided is an olivine-type lithium iron phosphate having a composition represented by Formula I, comprising 0.1 to 5% by weight of Li3PO4, and comprising no Li2CO3 or, if present, comprising Li2CO3 in an amount less than 0.25% by weight: Li1+aFe1-xMx(PO4-b)Xb (I) wherein M, X, a, x and b are as defined above. The lithium iron phosphate comprises no lithium carbonate (Li2CO3) or, if present, comprises the Li2CO3 in an extremely small amount, and comprises Li3PO4 having superior electrochemical stability, thermal stability and ionic conductivity, thus advantageously imparting high-temperature and storage stability as well as stability and rate properties to lithium secondary batteries, when used as a cathode active material for the lithium secondary batteries.

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Patent Number

268417

Indian Patent Application Number

2840/DELNP/2011

PG Journal Number

36/2015

Publication Date

04-Sep-2015

Grant Date

28-Aug-2015

Date of Filing

18-Apr-2011

Name of Patentee

LG CHEM, LTD.

Applicant Address

20, YOIDO-DONG, YOUNGDUNGPO-GU, SEOUL 150-721, REPUBLIC OF KOREA

Inventors:

#	Inventor's Name	Inventor's Address
1	SANGHOON CHOY	106-102, COUNTIES VILLA, 495, NOEUN-DONG, YUSEONG-GU, DAEJEON 305-325, REPUBLIC OF KOREA
2	YONG TAE LEE	126-32, GYEONGWONDONG 1-GA, WANSOAN-GU, JEONJU-SI, JEOLLABUK-DO 560-021, REPUBLIC OF KOREA
3	HONG-KYU PARK	301-1306, SONGRIMMAEUL APT., HAGI-DONG, YUSEONG-GU, DAEJEON 305-759, REPUBLIC OF KOREA
4	SOO MIN PARK	112-1001, HANMAEUL APT., SONGGANG-DONG, YUSEONG-GU, DAEJEON 305-756, REPUBLIC OF KOREA
5	HYO-SHIK KIL	204-2002, SAMSUNG RAEMIAN APT., GAJANG-DONG, SEO-GU, DAEJEON 302-182, REPUBLIC OF KOREA
6	CHEOL-HEE PARK	101-309, EXPO APT., JEONMIN-DONG, YUSEONG-GU, DAEJEON 305-761, REPUBLIC OF KOREA

PCT International Classification Number

C01B 25/30

PCT International Application Number

PCT/KR2009/006086

PCT International Filing date

2009-10-21

PCT Conventions:

#	PCT Application Number	Date of Convention	Priority Country
1	10-2008-0103569	2008-10-22	Republic of Korea