Abstract: Double-coated high-nickel lithium-ion cathode material, including a cathode material substrate, a first coating layer coated on a surface of the cathode material substrate, and a second coating layer coated on a surface of the first coating layer; wherein the first coating layer and the second coating layer are prepared by successively coating the cathode material substrate with a metal oxide and a boron-containing compound. The high-nickel cathode material for lithium-ion batteries of the present invention has a stable structure and interface, is relatively stable in the air, and is convenient for large-scale production. The prepared battery has low gas production and high safety.

Abstract: A cathode material for a sodium ion battery having a coating structure having chemical formula: Na1+aNixMnyFezAmBnO2, where ?0.35?a?0.20, 0.08<x?0.5, 0.05<y?0.48, 0.03<z<0.4, 0.03<m<0.24, 0.001<n<0.06, x+y+z+m+n=1. A preparation method of a cathode material for a sodium ion battery comprises the steps of: firstly, mixing a sodium source, a nickel source, a manganese source, an iron source and an A source uniformly, and then performing a first sintering, cooling and crushing to obtain a semi-finished product; then, after mixing the semi-finished product with a B source uniformly, performing a second sintering, cooling and crushing to obtain the cathode material for a sodium ion battery. The cathode material for a sodium ion battery according to the present disclosure is structurally stable, and a surface coating layer thereof inhibits side reactions with an electrolyte, so that the cycling performance is significantly improved.

Abstract: The present invention relates to a mono-crystalline cathode material for sodium-ion battery and a preparation method and application thereof. The mono-crystalline cathode material for a sodium ion battery contains the chemical formula of Na1+aNi1-x-y-z-cMnxFeyMzNcO2, wherein ?0.40?a?0.25, 0.08?x?0.5, 0.05?y?0.5, 0?z<0.26, 0<c<0.1, the M and N are both one or a combination of two or more selected from the group consisting of Ti, Zn, Co, Mn, Al, Zr, Y, Ca, Li, Rb, Cs, W, Ce, Mo, Ba, Mg, Ta, Nb, V, Sc, Sr, B, F, P or Cu elements. The mono-crystalline cathode material for sodium-ion battery has a specific chemical composition, has a mono crystal morphology, and good structural stability and integrity. Particle fragmentation can not be produced in the cyclic process, and meanwhile, the cyclic stability of the sodium-ion battery can be improved.

Abstract: The present invention related to the technical field of sodium ion batteries, and particularly related to a mono-crystalline cathode material for sodium-ion battery and a preparation method and battery thereof. The mono-crystalline cathode material for sodium-ion battery has a chemical composition formula of Na1+aNi1?x?y?zMnxFeyMzO2, wherein ?0.40?a?0.25, 0.08?x?0.5, 0.05?y?0.5, 0?z?0.26, the M is one or a combination of two or more selected from the group consisting of Ti, Zn, Co, Mn, Al, Zr, Y, Ca, Li, Rb, Cs, W, Ce, Mo, Ba, Mg, Ta, Nb, V, Sc, Sr, B, F, P or Cu elements. The mono-crystalline cathode material for sodium-ion battery has a specific chemical composition, a mono crystal morphology and good structural stability and integrity. Particle fragmentation can not be produced in the cyclic process, and meanwhile, the cyclic stability of the sodium-ion battery can be improved.

Abstract: The present invention discloses a cathode material for a sodium ion battery and a preparation method and application thereof. The general chemical formula of the cathode material is Na1+aMyZnxO2+c, where ?0.40?a?0.25, 0.1<x?0.22, 0.78<y?0.93, ?0.3<c<0.3. M is one or a combination of two or more selected from the group consisting of Mn, Fe, Ni, Co, Al, Zr, Y, Ca, Li, Rb, Cs, W, Ce, Mo, Ba, Ti, Mg, Ta, Nb, V, Sc, Sr, B and Cu. In the powder X-ray diffraction graph, there are at least five diffraction peaks exist when 2? is 30°-40°. A minor strong peak exist when 2? is around 16° and a major strong peak exists when 2? is around 41°. The sodium ion cathode material of the present invention has a low residual alkali content and avoids the occurrence of gelation phenomenon in the battery slurrying process. In addition, the capacity and rate of the sodium ion battery prepared therefrom are at a relatively high level.

Abstract: The present invention discloses a cathode material for a sodium ion battery and a preparation method and application thereof. The cathode material has a general chemical formula of Na1+aNi1?x?y?zMnxFeyAzO2, where ?0.40?a?0.25, 0.08<x<0.5, 0.05<y<0.5, 0.0<z<0.26. A is selected from one of or a combination of two or more of Ti, Zn, Co, Al, Zr, Y, Ca, Li, Rb, Cs, W, Ce, Mo, Ba, Mg, Ta, Nb, V, Sc, Sr, B and Cu. Here, in the cathode material for the sodium ion battery, at least two diffraction peaks exist when a diffraction angle 2? is 42°-46°. The diffraction angle 2? values of the two diffraction peaks are respectively around 43° and around 45°. The present invention increases the discharge capacity of the sodium ion battery by controlling the structure of the cathode material of the sodium ion battery to reduce the residual alkali content of the cathode material.

Abstract: A high-nickel cathode material for lithium ion batteries and a preparation method and application thereof. The high-nickel cathode material contains elements shown in and constituting the chemical formula 1 thereof Li1+aNibMncAdO2, where 0.01?a?0.24, 0.79<b?0.96, 0.01<c?0.20, 0<d?0.06; and A is selected from any one or two or more of Mn, Co, Al, Zr, Y, Rb, Cs, W, Ce, Mo, Ba, Ti, Mg, Ta, Nb, Ca, V, Sc, Sr and B, or from a phosphorus-containing compound containing at least one of Ti, Al, Mg, Zr, La and Li. The high-nickel cathode material of the lithium ion battery of the present invention has better cycling performance, higher capacity, and a relatively small increase in resistance during cycling of the battery.

Abstract: The cathode material of the invention has a porous structure, wherein the pore volume of mesoporous with pore diameter of 2-20 nm accounts for 90% or more of the total pore volume. As compared with conventional lithium-ion battery cathode material, the lithium-ion battery cathode material of the present invention contains mainly mesopores, and the pore size of mesopores is mostly in the range of 2-20 nm.

Abstract: The present invention discloses a spherical or spherical-like lithium battery cathode material, a battery and preparation methods and applications thereof. The chemical formula of the cathode material is: LiaNixCoyMnzMbO2, wherein 1.0?a?1.2; 0.0<b?0.05; 0.30?x?0.90; 0.05?y?0.40; 0.05?z?0.50; x+y+z+b=1; M is one or two or more of Mg, Ti, Al, Zr, Y, Co, Mn, Ni, Ba and a rare earth element. A single ?-NaFeO2 type layered structure of the cathode material is shown by a powder X-ray diffraction pattern and full width at half maximum FWHM (110) of the (110) diffraction peak near a diffraction angle 2? of 64.9° is in the range of 0.073 to 0.

Abstract: The present invention relates to a spherical or spherical-like cathode material for lithium-ion battery and a lithium-ion battery. The chemical formula of the cathode material is LiaNixCoyMnzMbO2, wherein: 1.02?a?1.20; 0.0?b?0.5; 0.30?x?0.60; 0.20?y?0.40; 0.05?z?0.50; x+y+z=1; M is one or two or more selected from the group consisting of Mg Ti Al Zr Y Co Mn Ni Ba and rare earth elements. Under the scanning electron microscope, the cathode material comprises primary particles with a morphology of spherical or spherical shape, and secondary particles agglomerated by the primary particles. The number percentage of the secondary particles agglomerated by the primary particles is less than or equal to 30%. The lithium battery prepared by the obtained cathode material has high specific capacity, high temperature stability, excellent safety and cycling performance at high temperature, and the preparation method thereof is simple and the cost is relatively low.

Abstract: The present invention relates to a lithium ion cathode material and a lithium ion battery. The chemical formula of the cathode material is: LiaNixCoyMnzMbO2, wherein 1.0?a?1.2; 0.00?b?0.05; 0.30?x?0.60; 0.10?y?0.40; 0.15?z?0.30; x+y+z=1; M is one or two or more selected from the group consisting of Mg, Ti, Al, Zr, Y, W, Mn, Ba and rare earth elements; wherein the scanning electron microscope observation shows that, the cathode material consists of secondary particles agglomerated by 10 or less primary single crystal particles and secondary particles agglomerated by more than 10 primary single crystal particles, and wherein, the area percentage of the secondary particles agglomerated by 10 or less primary single crystal particles is greater than 80%, and the area percentage of the secondary particles agglomerated by more than 10 primary single crystal particles is less than or equal to 20%.

Abstract: The present invention discloses a spherical or spherical-like lithium battery cathode material, a battery and preparation methods and applications thereof. The chemical formula of the cathode material is: LiaNixCoyMnzMbO2, wherein 1.0?a?1.2; 0.0<b?0.05; 0.30?x?0.90; 0.05?y?0.40; 0.05?z?0.50; x+y+z+b=1; M is one or two or more of Mg, Ti, Al, Zr, Y, Co, Mn, Ni, Ba and a rare earth element. A single ?-NaFeO2 type layered structure of the cathode material is shown by a powder X-ray diffraction pattern and full width at half maximum FWHM (110) of the (110) diffraction peak near a diffraction angle 2? of 64.9° is in the range of 0.073 to 0.

Abstract: The present invention discloses a spherical or spherical-like layered structure lithium-nickel-cobalt-manganese composite oxide cathode material as well as preparation methods and applications thereof. A chemical formula of the cathode material is: LiaNixCoyMnzO2, wherein, 1.0?a?1.2, 0.30?x?0.90, 0.05?y?0.40, 0.05?z?0.50, and x+y+z=1. The cathode material powder is a single ?-NaFeO2 type layered structure, and full width at half maximum of 110 diffraction peak which is in the vicinity of the X-ray diffraction angle 2 theta of 64.9° is usually 0.07 to 0.15, and the average crystallite size is usually greater than 900 ? and less than 2000 ?. Under scanning electron microscope, it can be seen that the cathode material is mainly consisted of spherical or spherical-like primary mono-crystal particles and a small amount of secondary agglomerated particles, and wherein, the particle diameter of the primary mono-crystal particles is 0.

Abstract: The present invention discloses a spherical or spherical-like lithium battery cathode material, a battery and preparation methods and applications thereof. The chemical formula of the cathode material is: LiaNixCoyMnzMbO2, wherein 1.0?a?1.2; 0.0<b?0.05; 0.30?x?0.90; 0.05?y?0.40; 0.05?z?0.50; x+y+z+b=1; M is one or two or more of Mg, Ti, Al, Zr, Y, Co, Mn, Ni, Ba and a rare earth element. A single ?-NaFeO2 type layered structure of the cathode material is shown by a powder X-ray diffraction pattern and full width at half maximum FWHM (110) of the (110) diffraction peak near a diffraction angle 2? of 64.9° is in the range of 0.073 to 0.

Abstract: The present invention relates to a spherical or spherical-like cathode material for lithium-ion battery and a lithium-ion battery. The chemical formula of the cathode material is LiaNixCoyMnzMbO2, wherein: 1.02?a?1.20; 0.0?b?0.5; 0.30?x?0.60; 0.20?y?0.40; 0.05?z?0.50; x+y+z=1; M is one or two or more selected from the group consisting of Mg Ti Al Zr Y Co Mn Ni Ba and rare earth elements. Under the scanning electron microscope, the cathode material comprises primary particles with a morphology of spherical or spherical shape, and secondary particles agglomerated by the primary particles. The number percentage of the secondary particles agglomerated by the primary particles is less than or equal to 30%. The lithium battery prepared by the obtained cathode material has high specific capacity, high temperature stability, excellent safety and cycling performance at high temperature, and the preparation method thereof is simple and the cost is relatively low.

Abstract: The present invention relates to a lithium ion cathode material and a lithium ion battery. The chemical formula of the cathode material is: LiaNixCoyMnzMbO2, wherein 1.0?a?1.2; 0.00?b?0.05; 0.30?x?0.60; 0.10?y?0.40; 0.15?z?0.30; x+y+z=1; M is one or two or more selected from the group consisting of Mg, Ti, Al, Zr, Y, W, Mn, Ba and rare earth elements; wherein the scanning electron microscope observation shows that, the cathode material consists of secondary particles agglomerated by 10 or less primary single crystal particles and secondary particles agglomerated by more than 10 primary single crystal particles, and wherein, the area percentage of the secondary particles agglomerated by 10 or less primary single crystal particles is greater than 80%, and the area percentage of the secondary particles agglomerated by more than 10 primary single crystal particles is less than or equal to 20%.

Abstract: The present invention discloses a spherical or spherical-like lithium battery cathode material, a battery and preparation methods and applications thereof. The chemical formula of the cathode material is: LiaNixCoyMnzMbO2, wherein 1.0?a?1.2; 0.0<b?0.05; 0.30?x?0.90; 0.05?y?0.40; 0.05?z?0.50; x+y+z+b=1; M is one or two or more of Mg, Ti, Al, Zr, Y, Co, Mn, Ni, Ba and a rare earth element. A single ?-NaFeO2 type layered structure of the cathode material is shown by a powder X-ray diffraction pattern and full width at half maximum FWHM (110) of the (110) diffraction peak near a diffraction angle 2? of 64.9° is in the range of 0.073 to 0.

Abstract: The present invention discloses a spherical or spherical-like layered structure lithium-nickel-cobalt-manganese composite oxide cathode material as well as preparation methods and applications thereof. A chemical formula of the cathode material is: LiaNixCoyMnzO2, wherein, 1.0?a?1.2, 0.30?x?0.90, 0.05?y?0.40, 0.05?z?0.50, and x+y+z=1. The cathode material powder is a single ?-NaFeO2 type layered structure, and full width at half maximum of 110 diffraction peak which is in the vicinity of the X-ray diffraction angle 2 theta of 64.9° is usually 0.07 to 0.15, and the crystal grain size is usually greater than 900 ? and less than 2000 ?. Under scanning electron microscope, it can be seen that the cathode material is mainly consisted of spherical or spherical-like primary mono-crystal particles and a small amount of secondary agglomerated particles, and wherein, the particle diameter of the primary mono-crystal particles is 0.