Samsung Electronics Co., Ltd.

Postech Academy-industry Foundation

Byoungwoo Kang

Sukgi Hong

Byungjin Choi

Donghee Yeon

Jinsu Ha

Junghwa Lee

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.

Composite positive electrode active material, method of preparing the same, positive electrode including composite positive electrode active material,and lithium battery including positive electrode

A composite positive active material represented by Formula 1,LiNiCoMnMO&#x2003;&#x2003;Formula 1

Composite positive electrode active material, method of preparing the same, positive electrode including composite positive electrode active material, and lithium battery including positive electrode

Growing community of inventors

Pohang-si, South Korea

Byoungwoo Kang