Abstract: A cathode material precursor, a single-crystal cathode material and a preparation method thereof, and a lithium ion battery are provided. A general chemical formula of the single-crystal cathode material is LixNiaCobMncNdO2, where 0.98?x?1.1, 0.50?a?0.98, 0<b?0.20, 0<c?0.30, 0?d?0.10, a+b+c+d=1, and N includes at least one of Al, Ti, Zr, Mg, Sr, Ba, Ca, Nb, W, Sb, Ta, Sn, or Y; a standard deviation of a mass content of each element of Ni, Co, and Mn in the single-crystal cathode material is ?0.03; and lattice strain is ?<0.2%.

Abstract: The present application relates to field of cathode material, and a cathode material and a method for preparing the same, a lithium ion battery provided, where the cathode material includes an active material having a chemical formula Lia(NixCoyRz)1-bMbO2, where 0.9?a?1.10, x+y+z=1, 0.8?x?0.99, 0?y?0.15, 0?z?0.1, 0?b?0.1; R includes Al and/or Mn, M includes a metal element; and a coating layer on surface of the active material, where the coating layer includes a phosphate compound; the cathode material has a particle hardness of Cs?50 Mpa and satisfies the following: Cs10/Cs50?0.7; where Cs10 is hardness of particles with a particle size D10, and Cs50 is hardness of particles with a particle size D50. The cathode material and method for preparing the same, lithium ion battery provided, which improve coating uniformity, precisely control coating amount, improve rate and cycling performance of lithium ion battery, and reduce production costs.

Abstract: A method for recycling waste lithium iron phosphate is by selective oxidation-reduction, to obtain recycled lithium iron phosphate, and a lithium ion battery. The method includes: primarily sintering waste lithium iron phosphate under a condition where a mild oxidizing gas is introduced; separating a lithium iron phosphate powder material; supplementing lithium and supplementing carbon to the lithium iron phosphate powder material and regulating the composition of the lithium iron phosphate powder material using a lithium source and a carbon source by secondary sintering to obtain recycled lithium iron phosphate, wherein the mild oxidizing gas is water vapor, CO2 gas, or a mixed gas thereof.

Abstract: The present disclosure relates to a high-nickel positive electrode material and a preparation method therefor and a lithium ion battery, wherein a general chemical formula of the high-nickel positive electrode material is represented by formula (1): LixNi1?(a+b+c+d+e+f)CoaM1bM2cM3dM4eM5fO2 (1), where 0.95?x?1.2, 0?a?0.15, 0?b?0.10, 0?c?0.05, 0?d?0.05, 0?e?0.05, 0?f?0.05, and 0<a+b+c+d+e+f?0.2.

Abstract: The present disclosure relates to the technical field of cathode materials, and provides a cathode material and a preparation method therefor, a cathode sheet, and a battery. The preparation method includes the following steps: coating the surface of spherical nickel hydroxide with a lithium compound, a divalent cobalt compound, a trivalent cobalt compound, and an optional compound M, and then carrying out primary sintering on the coated material under an oxygen atmosphere, wherein the molar content of the trivalent cobalt compound in the cobalt compound is 50%-85%.

Abstract: A cathode material and a method for preparing the same, lithium ion battery provided. The cathode material includes secondary particle which includes a plurality of primary particles, where the primary particle includes an active material having a chemical formula LibNixCoyMzRwO2, where 0.95?b?1.10, 0.8?x<1, 0<y+z+w?0.2, x+y+z+w=1, 0.0001?w?0.003; M is selected from at least one of Mn and Al, R is a metal; Phosphate compound coating layer are uniformly distributed on the surface of the cathode material, including a first coating layer and a second coating layer, where the first coating layer forms on the surface of the primary particle, the second coating layer forms on the surface of the secondary particle. The cathode material of this application can effectively improve the rate performance, thermal and cycling stability of lithium battery, and has the characteristics of low cost and easy large-scale production.

Abstract: The present disclosure relates to the field of cathode materials, and provides a cathode material and a preparation method thereof as well as a lithium-ion secondary battery, wherein the cathode material comprises: a secondary particle comprising a plurality of primary particles, wherein the primary particles contain an active substance having a chemical general formula of LibNixCoyMzNwO2, where 0.95?b?1.05, 0.8?x<1, 0<y+z?0.2, x+y+z=1, and 0.0001?w?0.003; M is selected from at least one of Mn and Al; N is a metal and a coating layer, which comprises a first coating laver and a second coating laver, wherein the first coating laver is formed on the surface of the primary particles, the second coating laver is formed on the surface of the secondary particles, and both the first coating layer and the second coating laver contain a phosphate compound.

Abstract: Provided is a cathode material, a preparation method thereof, and a secondary lithium battery. The cathode material is characterized in that a chemical formula of the cathode material is LibNi1-x-yCoxAlyMzO2, where 0.95?b?1.10, 0?x?0.15, 0.01?y?0.1, 0<z?0.05, and an M element is a metal element; the M element is distributed in interior and surface of the cathode material, the M element distributed in the interior of the cathode material is presented in a doped form, and the M element distributed in the surface of the cathode material is presented in a form of a coating layer formed of at least one of M oxide or lithium-M composite oxide; and a molar ratio of the M element in the interior to the M element in the surface is greater than 0.5. The cathode material provided has good high-rate capability and thermal stability.

Abstract: A recycling method for a positive electrode material includes the following steps: sintering a positive electrode material to be recycled in an oxidizing atmosphere to produce the positive electrode material. Gases in the oxidizing atmosphere include CO2. The positive electrode material produced has a reduced carbon content, great cycle stability and rate performance, the carbon content being ?2.85 wt %, and the 200-cycle capacity retention rate being ?99.0%.

Abstract: A method for recycling waste lithium iron phosphate is by selective oxidation-reduction, to obtain recycled lithium iron phosphate, and a lithium ion battery. The method includes: primarily sintering waste lithium iron phosphate under a condition where a mild oxidizing gas is introduced; separating a lithium iron phosphate powder material; supplementing lithium and supplementing carbon to the lithium iron phosphate powder material and regulating the composition of the lithium iron phosphate powder material using a lithium source and a carbon source by secondary sintering to obtain recycled lithium iron phosphate, wherein the mild oxidizing gas is water vapor, CO2 gas, or a mixed gas thereof.

Abstract: A modified super-hydrophobic material-coated high-nickel cathode material for a lithium ion battery and a preparation method therefor. The surface of the high-nickel cathode material for a lithium ion battery is coated with a modified super-hydrophobic material, and particles are bridged with each other by the modified super-hydrophobic material. The modified super-hydrophobic material is obtained by depositing a nano material on the surface of a super-hydrophobic material. By the surface modification of the super-hydrophobic material, the hydrophobic and electrolyte-philic properties and the conductivity of the super-hydrophobic material are improved. Next the modified super-hydrophobic material is coated on the surface of the particles of the high-nickel cathode material for a lithium ion battery and between the particles, in the form of a three dimensional network.

Abstract: The present invention relates to a cathode material of Lithium-Nickel-Cobalt-Aluminum composite oxide, a method of fabricating the same, and a lithium ion battery including the same. The composite cathode material has a core-shell structure, wherein the core portion is made of LiNi1-x-yCoxAlyO2 which is washed with an alcohol and organic acid-mixed solution, wherein 0<x?0.2, 0<y?0.1; the shell is metal oxide layer. In the present invention, the composite cathode material is fabricated by a combined method, wherein the base material is washed with an alcohol and organic acid-mixed solution and the shell layer material is coated by spray drying. The composite cathode material of the present invention has low content of lithium impurities and excellent high-temperature cycling and storage performance.

Abstract: The present invention discloses a method for modification of a lithium ion battery positive electrode material. The method comprises the following steps: (1) mixing organic acid and alcohol to obtain an organic solution; (2) adding positive electrode material into the organic solution to obtain a suspension; (3) washing with alcohol solvent after centrifugal separation; (4) drying treatment; the positive electrode material is a nickel-based metal oxide positive electrode material LiNixM1-xO2, wherein 0.5?x<1 and M is one or two selected from the group consisting of Co, Mn, Al, Cr, Mg, Cu, Ti, Mg, Zn, Zr and V.

Abstract: The present invention relates to a cathode material of Lithium-Nickel-Cobalt-Aluminum composite oxide, a method of fabricating the same, and a lithium ion battery including the same. The composite cathode material has a core-shell structure, wherein the core portion is made of LiNi1-x-yCoxAlyO2 which is washed with an alcohol and organic acid-mixed solution, wherein 0<x?0.2, 0<y?0.1; the shell is metal oxide layer. In the present invention, the composite cathode material is fabricated by a combined method, wherein the base material is washed with an alcohol and organic acid-mixed solution and the shell layer material is coated by spray drying. The composite cathode material of the present invention has low content of lithium impurities and excellent high-temperature cycling and storage performance.

Abstract: The present invention discloses a method for modification of a lithium ion battery positive electrode material. The method comprises the following steps: (1) mixing organic acid and alcohol to obtain an organic solution; (2) adding positive electrode material into the organic solution to obtain a suspension; (3) washing with alcohol solvent after centrifugal separation; (4) drying treatment; the positive electrode material is a nickel-based metal oxide positive electrode material LiNixM1?xO2, wherein 0.5?x<1 and M is one or two selected from the group consisting of Co, Mn, Al, Cr, Mg, Cu, Ti, Mg, Zn, Zr and V.