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:
Jun. 18, 2024
Filed:
May. 19, 2022
Samsung Electronics Co., Ltd., Suwon-si, KR;
Postech Academy-industry Foundation, Pohang-si, KR;
Donghee Yeon, Seoul, KR;
Byoungwoo Kang, Pohang-si, KR;
Junghwa Lee, Pohang-si, KR;
Byungjin Choi, Seoul, KR;
Sukgi Hong, Seongnam-si, KR;
Jinsu Ha, Seongnam-si, KR;
SAMSUNG ELECTRONICS CO., LTD., Gyeonggi-Do, KR;
POSTECH ACADEMY-INDUSTRY FOUNDATION, Pohang-si, KR;
Abstract
A composite positive active material represented by Formula 1,LiNiCOMnMO Formula 1wherein, in Formula 1, M is zirconium (Zr), aluminum (Al), rhenium (Re), vanadium (V), chromium (Cr), iron (Fe), gallium (Ga), silicon (Si), boron (B), ruthenium (Ru), titanium (Ti), niobium (Nb), molybdenum (Mo), magnesium (Mg), or platinum (Pt), 1.1≤a≤1.3, b+c+d+e≤1, 0≤b≤0.3, 0≤c≤0.3, 0<d≤0.6, and 0≤e≤0.1, wherein, through atomic interdiffusion of lithium and the metal, the composite positive active material has a uniform distribution of lithium excess regions and a uniform degree of disorder of metal cations, and the metal cations have a disordered, irregular arrangement at an atomic scale. Also a method of preparing the composite positive active material, a positive electrode including the composite positive active material, and a lithium battery including the positive electrode.