continued from part 1 - Controller General of Patents, Designs, and ...

(12) PATENT APPLICATION PUBLICATION (21) Application No.6768/DELNP/2008 A
(19) INDIA
(22) Date of filing of Application :06/08/2008 (43) Publication Date : 24/10/2008
(54) Title of the invention : "MATERIAL FOR LITHIUM SECONDARY BATTERY OF HIGH PERFORMANCE"
(51) International classification :H01M 4/58 (71)Name of Applicant :
(31) Priority Document No :PCT/KR2006/001739 1)LG CHEM, LTD.,
(32) Priority Date :10/05/2006
Address of Applicant :20, YOIDO-DONG, YOUNGUNGPO-
(33) Name of priority country :Republic of Korea GU, SEOUL 150-721, KOREA. Republic of Korea
(86) International Application No :PCT/KR2007/002230 (72)Name of Inventor :
Filing Date
:07/05/2007
1)HONG-KYU PARK,
(87) International Publication No :WO 2007/129848 2)SUN SIK SHIN,
(61) Patent of Addition to Application
Number
Filing Date
:NA
:NA
3)SIN YOUNG PARK,
4)HO SUK SHIN,
5)JENS M PAULSEN,
(62) Divisional to Application Number :NA
Filing Date
:NA
(57) Abstract :
Provided is a lithium mixed transition metal oxide having a composition represented by Formula I of LixMy02 (M, x and y are as
defined in the specification), wherein lithium ions intercalate into and deintercalate from mixed transition metal oxide layers ("MO
layers") and some of MO layer-derived Ni ions are inserted into intercalation/deintercalation layers of lithium ions ("reversible limium
layers") thereby resulting in the interconnection between the MO layers. The lithium mixed transition metal oxide of the present
invention has a stable layered structure and therefore exhibits improved stability of the crystal structure upon charge/discharge. In
addition, a battery comprising such a cathode active material can exhibit a high capacity and a high cycle stability. Further, such a
lithium mixed transition metal oxide is substantially free of water-soluble bases, and thereby can provide excellent storage stability,
decreased gas evolution and consequently superior high-temperature stability with the feasibility of low-cost mass production.
No. of Pages : 57 No. of Claims : 17
The Patent Office Journal 24/10/2008 26194