The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 07, 2017
Filed:
Feb. 05, 2015
Lg Chem, Ltd., Seoul, KR;
Hong-Kyu Park, Daejeon, KR;
Sun sik Shin, Daejeon, KR;
Sin young Park, Daejeon, KR;
Ho suk Shin, Seoul, KR;
Jens M. Paulsen, Chungcheongnam-do, KR;
LG Chem, Ltd., , KR;
Abstract
Provided is a lithium mixed transition metal oxide having a composition represented by Formula I of LiMO(M, x and y are as defined in the specification) having mixed transition metal oxide layers ('MO layers') comprising Ni ions and lithium ions, wherein lithium ions intercalate into and deintercalate from the MO layers and a portion of MO layer-derived Ni ions are inserted into intercalation/deintercalation layers of lithium ions ('reversible lithium 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.