Loading patent…
AssigneeLG Chem, Ltd.
InventorsJun Gil Kim, Ju Han Yoon, Won Tae KIm, Young Geun Lim
Estimating the term…
A positive electrode active material having improved resistance and lifetime characteristics The positive electrode active material represented by a following Formula 1: x[LiMnpNi(1-p-q-r)CoqM1rO2]·(1-x)[Li2MnsM2(1-s)O3], wherein: M1 and M2 are each independently one selected from Zr, Al, Re, V, Cr, Fe, Ga, Si, B, Ru, Ti, Nb, Mo, Mg, W, Na, or Pt; and 0.500<x<0.800, 0.450<p<0.650, 0≤q≤0.025, 0≤r≤0.100, and 0.900≤s≤1.000. The positive electrode active material is formed of polycrystal grains composed of secondary particles in which primary particles are aggregated. Additionally, a surface portion porosity, A (%) defined by a following Equation 1 is 1% to 30%: A (%)=[PA/SA]×100. A method for preparing the positive electrode active material, and a positive electrode and a lithium secondary battery which include the same.
A positive electrode active material formed of polycrystal grains composed of secondary particles in which primary particles are aggregated, and represented by a following Formula 1:
A method for preparing a positive electrode active material represented by a following Formula 1:
Dependencies are inferred from the claim text.