The present application relates to a lithium ion battery positive electrode material, and a preparation method therefor and the use thereof. The preparation method comprises the following steps: (1) preparing a mixed solution from a raw material containing metal ions, a polymer and a solvent, independently leaving same and an ammonium source to stand in the same space, and subjecting same to solid-liquid separation to obtain a precursor, and (2) mixing and calcining the precursor in step (1) and a lithium source to obtain a lithium ion battery positive electrode material.

The present application relates to a lithium ion battery positive electrode material, and a preparation method therefor and the use thereof. The preparation method comprises the following steps: (1) preparing a mixed solution from a raw material containing metal ions, a polymer and a solvent, independently leaving same and an ammonium source to stand in the same space, and subjecting same to solid-liquid separation to obtain a precursor, and (2) mixing and calcining the precursor in step (1) and a lithium source to obtain a lithium ion battery positive electrode material.

The present invention relates to an electrode material consisting of a lithium-rich manganese rich oxide compound doped with copper particularly useful as cathode material in lithium-ion batteries of formula (I)

Li.sub.aM.sub.aMn.sub.bNi.sub.xCo.sub.yCu.sub.zO.sub.2(I) wherein: M is selected from Na, Li, K and mixtures thereof;

[00001]$1.05a+a^{}1.3;$$0.55b0\text{.70};$$0.15x0\text{.30};$$0.025y0.125;$$\mathrm{and}$$0.05<z0.125.$

The present invention relates to an electrode material consisting of a lithium-rich manganese rich oxide compound doped with copper particularly useful as cathode material in lithium-ion batteries of formula (I)

Li.sub.aM.sub.aMn.sub.bNi.sub.xCo.sub.yCu.sub.zO.sub.2(I) wherein: M is selected from Na, Li, K and mixtures thereof;

[00001]$1.05a+a^{}1.3;$$0.55b0\text{.70};$$0.15x0\text{.30};$$0.025y0.125;$$\mathrm{and}$$0.05<z0.125.$

The present disclosure is intended to provide a production method for a positive electrode active material with reduced degradation in resistance property. The technology disclosed herein relates to a production method for a positive electrode active material after sintering, the method comprising: a preparation step of preparing an end material that includes a positive electrode composite material including a positive electrode active material for a secondary battery and a binder containing fluorine; and a sintering step of sintering the positive electrode composite material in a container, wherein the sintering step is performed with magnesium hydroxide present in the container. Consequently, a positive electrode active material with reduced degradation in resistance property is achieved.

The present disclosure is intended to provide a production method for a positive electrode active material with reduced degradation in resistance property. The technology disclosed herein relates to a production method for a positive electrode active material after sintering, the method comprising: a preparation step of preparing an end material that includes a positive electrode composite material including a positive electrode active material for a secondary battery and a binder containing fluorine; and a sintering step of sintering the positive electrode composite material in a container, wherein the sintering step is performed with magnesium hydroxide present in the container. Consequently, a positive electrode active material with reduced degradation in resistance property is achieved.

The present disclosure relates to: a positive electrode NCM-based active material in which a crystallite size is 460 or more; a positive electrode including the positive electrode NCM-based active material; and a battery including the positive electrode. According to the present disclosure, there are provided: the positive electrode NCM (nickel-cobalt-manganese)-based active material that can exhibit an improved low-temperature low-SOC output property as well as high thermal stability; the positive electrode including the positive electrode NCM-based active material; and the battery including the positive electrode.

The present disclosure relates to: a positive electrode NCM-based active material in which a crystallite size is 460 or more; a positive electrode including the positive electrode NCM-based active material; and a battery including the positive electrode. According to the present disclosure, there are provided: the positive electrode NCM (nickel-cobalt-manganese)-based active material that can exhibit an improved low-temperature low-SOC output property as well as high thermal stability; the positive electrode including the positive electrode NCM-based active material; and the battery including the positive electrode.

A positive electrode material includes a positive electrode active material comprising-including a lithium nickel-based oxide having a mole fraction of nickel of 50 mol % to 90 mol % among metallic elements excluding lithium, and a coating layer including boron (B), which is formed on the surface of the lithium nickel-based oxide, wherein the positive electrode material has a BET specific surface area of 0.2 m2/g to 0.4 m2/g, and the boron (B) is included in an amount of 500 ppm to 1,000 ppm based on the total weight of the positive electrode material.

A positive electrode material includes a positive electrode active material comprising-including a lithium nickel-based oxide having a mole fraction of nickel of 50 mol % to 90 mol % among metallic elements excluding lithium, and a coating layer including boron (B), which is formed on the surface of the lithium nickel-based oxide, wherein the positive electrode material has a BET specific surface area of 0.2 m2/g to 0.4 m2/g, and the boron (B) is included in an amount of 500 ppm to 1,000 ppm based on the total weight of the positive electrode material.