A precursor material and a preparation method therefor, a positive electrode material, a secondary battery, and a power consuming apparatus. The precursor material has a chemical formula of Ni.sub.xCo.sub.yMn.sub.zM.sub.a(OH).sub.2, where element M includes at least one of Zr, Y, Al, Ti, W, Sr, Ta, Mo, Sb, Nb, Na, K, Ca, Ce, and La, 0.55x<1.0, 0y<0.45, 0z<0.45, 0<a0.45, a+x+y+z=1, and the precursor material includes 20-70 layers of (101) plane.

A precursor material and a preparation method therefor, a positive electrode material, a secondary battery, and a power consuming apparatus. The precursor material has a chemical formula of Ni.sub.xCo.sub.yMn.sub.zM.sub.a(OH).sub.2, where element M includes at least one of Zr, Y, Al, Ti, W, Sr, Ta, Mo, Sb, Nb, Na, K, Ca, Ce, and La, 0.55x<1.0, 0y<0.45, 0z<0.45, 0<a0.45, a+x+y+z=1, and the precursor material includes 20-70 layers of (101) plane.

The positive electrode active material according to the present invention may: comprise lithium, a transition metal, and oxygen; comprise a layered crystalline structure in which a lithium layer comprising the lithium and a transition metal layer comprising the transition metal are alternately and repeatedly arranged; and have provided, in the lithium layer or the transition metal layer, a partially regular mixed structure in which a unit arrangement is repeatedly provided in one direction, the unit arrangement having any one of the transition metal and the lithium arranged twice in a row in the one direction, and then the other arranged one time in the one direction.

The positive electrode active material according to the present invention may: comprise lithium, a transition metal, and oxygen; comprise a layered crystalline structure in which a lithium layer comprising the lithium and a transition metal layer comprising the transition metal are alternately and repeatedly arranged; and have provided, in the lithium layer or the transition metal layer, a partially regular mixed structure in which a unit arrangement is repeatedly provided in one direction, the unit arrangement having any one of the transition metal and the lithium arranged twice in a row in the one direction, and then the other arranged one time in the one direction.

Disclosed are positive electrode active materials for a rechargeable lithium battery and positive electrodes including the positive electrode active materials. The positive electrode active material comprises first particles comprising a compound having an olivine structure, second particles having a spinel structure, and third particles having a layered structure. The amount of the third particles is about 10 parts by weight to about 50 parts by weight based on 100 parts by weight of the positive electrode active material.

Disclosed are positive electrode active materials for a rechargeable lithium battery and positive electrodes including the positive electrode active materials. The positive electrode active material comprises first particles comprising a compound having an olivine structure, second particles having a spinel structure, and third particles having a layered structure. The amount of the third particles is about 10 parts by weight to about 50 parts by weight based on 100 parts by weight of the positive electrode active material.

Positive electrode active materials for a rechargeable battery, methods for preparing the same, and rechargeable lithium batteries including the same are disclosed. A positive electrode active material includes a first particle including a compound represented by Chemical Formula 1, and a second particle including a compound represented by Chemical Formula 2. Here, the Mn content (e.g., amount) of Chemical Formula 2 based on 100 mol % of transition metals of Chemical Formula 2 is 1 to 5 times the Mn content (e.g., amount) of Chemical Formula 1 based on 100 mol % of transition metals of Chemical Formula 1 (e.g., all metals excluding lithium).

Positive electrode active materials for a rechargeable battery, methods for preparing the same, and rechargeable lithium batteries including the same are disclosed. A positive electrode active material includes a first particle including a compound represented by Chemical Formula 1, and a second particle including a compound represented by Chemical Formula 2. Here, the Mn content (e.g., amount) of Chemical Formula 2 based on 100 mol % of transition metals of Chemical Formula 2 is 1 to 5 times the Mn content (e.g., amount) of Chemical Formula 1 based on 100 mol % of transition metals of Chemical Formula 1 (e.g., all metals excluding lithium).

The present application relates to a positive electrode active materials for a rechargeable lithium battery, positive electrodes including the same, and rechargeable lithium batteries including the same. For example, the positive electrode active material includes first particles including a compound of Chemical Formula 1 and having a first average particle diameter, and second particles including a compound of Chemical Formula 2 and having a second average particle diameter that is greater than the first average particle diameter. The content of the first particles is greater than the content of the second particles.

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A positive electrode material, a positive electrode plate, a battery cell, a battery, and an electric apparatus are described. The positive electrode material includes a layered lithium-containing metal oxide, and the layered lithium-containing metal oxide is represented by a general formula Li.sub.aL.sub.xNi.sub.bCo.sub.cMn.sub.dM.sub.(1bcd)O.sub.eN.sub.f, where an L ion is a cation having a radius larger than a radius of a Li ion, M includes at least one of Mg, Zr, Al, B, Ta, Mo, W, Nb, Sb, and La, and N includes at least one of F, S, and P, where 0<a<2, 0b<1, 0c<1, 0d<1, 0<b+c+d1, 0<e2, 0f<2, and 0<x0.8. The technical solutions provided in the embodiments of this application help to improve performance of the positive electrode material and performance of the battery cell.