Method of manufacturing lithium secondary battery and lithium secondary battery manufactured by the same
AssigneeLG Chem, Ltd.
InventorsIl Hong KIM, Kyoung Ho KIM, Hoe Jin HAH
Life of this patent
Estimating the term…
Abstract
Disclosed is a method of manufacturing a lithium secondary battery including a positive electrode active material, wherein the positive electrode active material includes one or more lithium transition metal oxides selected from compounds represented by Formula 1 defined in claim 1, and activation of the lithium secondary battery is conducted while changing charge/discharge voltage ranges and number of cycles depending on doping amount of M1 in Formula 1.
Claims19
A method of manufacturing a lithium secondary battery comprising a positive electrode active material,
- wherein the positive electrode active material comprises one or more lithium transition metal oxides selected from compounds represented by the following Formula 1 and
- activation of the lithium secondary battery is conducted while changing charge/discharge voltage ranges and number of cycles depending on doping amount of M1 in Formula 1:
- (1−x)LiM′O2−yAy−xLi2−wEwMn1−zM1zO3−y′Ay′ (1)
- wherein
- M′ represents MnaMb;
- M represents at least one selected from the group consisting of Ni, Ti, Co, Al, Cu, Fe, Mg, V, B, Cr, Zr, Zn and Period 2 transition metals;
- M1 represents at least one selected from the group consisting of Ru, Mo, Nb, Te, Re, Ti, Zr, Ir, Pt, Cr, S, W, Os and Po;
- E represents an alkali metal;
- A represents at least one selected from the group consisting of anions of PO4, BO3, CO3, F and NO3;
- and
- 0<x<1;
- 0≤y≤0.02;
- 0≤y′≤0.02;
- 0<z≤0.6;
- 0≤w≤0.5;
- 0≤a≤0.5;
- 0.5≤b≤1.0;
- and a+b=1.
A lithium secondary battery comprising a positive electrode active material,
- wherein the positive electrode active material comprises one or more lithium transition metal oxides selected from compounds represented by the following Formula 1, and
- the lithium secondary battery generates 2,000 ml or less in total of gas during 100 or more cycles after activation:
- (1−x)LiM′O2−yAy−xLi2−wEwMn1−zM1zO3−y′Ay′ (1)
- wherein
- M′ represents MnaMb;
- M represents at least one selected from the group consisting of Ni, Ti, Co, Al, Cu, Fe, Mg, V, B, Cr, Zr, Zn and Period 2 transition metals;
- M1 represents at least one selected from the group consisting of Ru, Mo, Nb, Te, Re, Ti, Zr, Ir, Pt, Cr, S, W, Os and Po;
- E represents an alkali metal;
- A represents at least one selected from the group consisting of anions of PO4, BO3, CO3, F and NO3;
- and
- 0<x<1;
- 0≤y≤0.02;
- 0≤y′≤0.02;
- 0<z≤0.6;
- 0≤w≤0.5;
- 0≤a≤0.5;
- 0.5≤b≤1.0;
- and a+b=1.
Dependencies are inferred from the claim text.