Abstract: Provided are an olivine-type cathode material, a method thereof, and a lithium-ion battery. The cathode material includes a matrix and a carbon coating layer. In a Raman spectrum, the cathode material has Raman responses in wavenumber regions of 940 cm?1 to 950 cm?1, 1330 cm?1 to 1350 cm?1, and 1580 cm?1 to 1610 cm?1, corresponding to three characteristic peaks A, B, and C, respectively. The cathode material satisfies: 0.01?an average of [I(A)/I(C)]?0.3 and 0.01?an average of [I(A)/I(B)]?0.3. The cathode material according to the present disclosure has a uniform carbon coating, and thus the cathode material has a high stability, a low specific surface area, a low volume resistivity, and a high pallet density. At the same time, when the cathode material is applied in a lithium-ion battery, the lithium-ion battery has excellent electrochemical performances.

Abstract: A positive electrode material, a preparation method therefor, and an application thereof are disclosed. The cathode material is composed of secondary particles agglomerated by primary particles; wherein individual secondary particle contains an inner core structure, a middle layer, and a shell layer, in this order, along a direction from a center to a surface of the secondary particle; wherein the middle layer is distributed in a circular ring shape; and wherein the secondary particle has a structure of close packing of an inner core structure, loose and porous middle layer, and close packing of the shell layer.

Abstract: The present disclosure discloses a lithium-manganese rich material and a preparation method and a use thereof.

Abstract: The present application relates to the field of sodium-ion batteries and discloses a solid electrolyte material, a solid electrolyte, a cathode material and a preparation method thereof, and a sodium-ion battery. A ratio of a peak intensity I(020) of a (020) crystal plane to a peak intensity I(421) of a (421) crystal plane obtained by X-ray Diffraction (XRD) of the solid electrolyte material satisfies 0.9?I(020)/I(421)<1. A ratio of a peak area A(020) of the (020) crystal plane to a peak area A(421) of the (421) crystal plane obtained by XRD of the solid electrolyte material satisfies 0.45?A(020)/A(421)<1. The solid electrolyte material has good crystallinity, high ionic conductivity, and good structural stability. The cathode material made from the solid electrolyte material has high capacity and excellent rate, cycle, and thermal stability.

Abstract: Provided are an agglomeration-like multi-element cathode material, a preparation method therefor, a use thereof, and a lithium-ion battery. The chemical formula of the agglomeration-like multi-element cathode material is LiaNixCoyMnzMbO2, wherein 0.9?a?1.1, 0.5?x<1, 0<y<0.5, 0<z<0.5, and 0?b<0.05; and M is at least one of V, Ta, Cr, La, Al, Ce, Er, Ho, Y, Mg, Sr, Ba, Ra, Zr, Fe, Ca, Zn, B, W, Nb, Cd, Pb, Si, Mo, Cu, Sr, and Ti. The multi-element cathode material is secondary particles formed by agglomeration of primary particles. The primary particles are spherical or spherical-like and have an average particle size DS ranging from 0.9 to 2.4 ?m. The secondary particles have an average particle size DL ranging from 5 to 15 ?m. A value of DL/DS ranges from 5 to 16. The agglomeration-like multi-element cathode material has high energy density, good rate capability, and excellent cycle stability.

Abstract: The present application relates to the field of lithium-ion batteries and discloses a cathode material, a preparation method thereof, and a lithium-ion battery. The cathode material has a microscopic residual stress measured by XRD and ranging from 0.01 to 0.15. The cathode material has an average diameter D measured by SEM and a grain diameter R measured by XRD, where D/R ranges from 1.4 to 2.5. As cathode material has the microscopic residual stress within a specific range and the ratio of average diameter to grain diameter ratio (D/R) within a specific range, the cathode material can have significantly improved electrochemical performances and thermal stability.

Abstract: The present application relates to the field of lithium-ion batteries and discloses a lithium-ion battery cathode material, a preparation method thereof, and a lithium-ion battery. A ratio of surface Ni3+ content of the cathode material to internal Ni3+ content of the cathode material is (0.95 to 1):1, and a content of disordering nickel in the cathode material is less than or equal to 3%. The lithium-ion battery cathode material has the similar surface Ni3+ content and internal Ni3+ content, and has a low content of disordering nickel, thereby avoiding the generation of a NiO passivation layer in the cathode material and reducing the phenomenon of loss of surface active lithium. The lithium-ion battery containing such a cathode material has improved capacity, rate capacity, and cycle performance.

Abstract: The present disclosure relates to the technical field of lithium-ion batteries, and discloses a lithium-rich manganese oxide cathode material, a preparation method and use thereof, and a positive electrode plate and use thereof. The cathode material has a chemical composition of xLi[Li1/3(Mn1-aMa)2/3]O2·(1?x)LiMn1-bM?bO2. An XRD spectrum of the cathode material has a diffraction peak P(1) in a range of a diffraction angle 2?1 satisfying [43.5(1?x)+44x]°?2?1?[44(1?x)+45x]°; and the XRD spectrum of the cathode material has a diffraction peak P(2) in a range of a diffraction angle 2?2 satisfying [17.7(1?x)+18.3x]°?2?2?[19.2(1?x)+19.8x]°, where 0.35?x?0.63. The cathode material has high first-cycle efficiency, high discharge capacity, high energy efficiency, high rate performance, and high cycle performance.

Abstract: The present invention provides novel compounds having the general formula: wherein ring A, ring B, ring C, bond a, and R1 to R7 are as described herein, or a pharmaceutically acceptable salt thereof, compositions including the compounds and methods of using the compounds.

Abstract: Provided are a single crystal multi-element cathode material, a preparation method thereof, and a lithium-ion battery. The multi-element cathode material includes quasi single crystal particles each consisting of a plurality of crystal grains, and element G is present at grain boundaries between the plurality of crystal grains. A concentration of the element G at a g-site of the grain boundaries gradually decreases with an increase in a distance between the g-site and a surface of the quasi single crystal particles. The element G is selected from at least one of Ni, Co, Mn, Ta, Cr, Mo, W, La, Al, Y, Ti, Zr, V, Nb, Ce, Er, and B.

Abstract: The present invention relates to the technical field of lithium-ion batteries, and discloses a precursor of a lithium-containing oxide cathode material, a lithium-containing oxide cathode material, a preparation method and use thereof, and a positive electrode plate and use thereof. The cathode material has a compressive index ??(P100) satisfying ??(P100)?60%+(y/x)×5%, where y/x is a molar ratio of Mn/Ni in the cathode material. The lithium-containing oxide cathode material has high compressive strength and stability, only a small degree of fracture occurs under high pressure during a preparation process of the electrode plate, and it can be continuously subjected to lithium ion deintercalation/deintercalation reactions without serious rupture.

Abstract: The present application relates to the technical field of lithium-ion battery and discloses a multi-element cathode material and, a preparation method thereof, and a lithium-ion battery. A surface of the multi-element cathode material includes a dot-like coating and/or an island-like coating. A particle diameter D1 with 1% cumulative particle size distribution of the multi-element cathode material is greater than or equal to 0.7 ?m. An arithmetic average roughness Ra, measured with a three-dimensional scanning electron microscope, of the coating of the multi-element cathode material satisfies 20 nm?Ra?200 nm. A coverage Q of the dot-like coating and/or the island-like coating of the multi-element cathode material satisfies 3%?Q?30%. The surface of the multi-element cathode material contains the dot-like coating and/or the island-like coating, and the coating has specific arithmetic average roughness and coverage.

Abstract: The present application relates to the technical field of sodium-ion batteries. Provided are a sodium-ion cathode material, a preparation method and use thereof, a sodium-ion battery, a sodium-ion battery pack, and a device. The sodium-ion cathode material includes a matrix and a coating layer coated on the matrix. The matrix has a composition represented by formula I: Na1?x[NiyMnzMu]TivO2 formula I. The coating layer has a composition represented by formula II: Na2??Ti6??M??O13 formula II. The sodium-ion cathode material has characteristics of high ionic and electronic conductivity, strong structural stability, and strong chemical stability. At the same time, applying the composite cathode material to the sodium-ion batteries can effectively improve electrochemical performance of the battery.

Abstract: Provided are an olivine composite cathode material, a preparation method, and a lithium-ion battery. The composite cathode material includes a matrix and a composite phase. The matrix has a composition represented by formula I: LixM1yMnzFe1-z-uM2u(PO4)w(ROa)bCv, where 0.5?x<1.3, 0?y?0.5, 0<z?1, 0?u?0.01, 0<w?1, 0<v?0.05, 0?a?8, and 0?b?1; M1 is selected from at least one of Mg, Na, and K; M2 is selected from at least one of Ga, Sn, V, Y, Mo, Al, Mg, Ce, Ti, Zr, Nb, Si, W, and In; and R is selected from at least one of Si, Cl, Br, S, Sb, and Sn. The composite phase has a composition represented by formula II: TmGn, where: 0.1?m?5, and 0.1?n?5; T is selected from at least one of Ti, Mo, Co, W, Zn, Cu, B, V, Nb, Ta, Pd, Cr, Ag, Al, Mn, Sn, Mg, Sc, Zr, and Hf; and G is selected from N and/or C.

Abstract: An iron manganese phosphate precursor, a lithium iron manganese phosphate positive electrode material and a method for preparation thereof, an electrode material, an electrode, and a lithium-ion battery are disclosed. The lithium iron manganese phosphate precursor is represented by (NH4)Mn1-x-yFexMyPO4H2O/C, wherein 0.1<x?0.6 and 0?y?0.04, and M is selected from at least one of Mg, Co, Ni, Cu, Zn, and Ti. Lithium iron manganese phosphate positive electrode material prepared from the precursor is uniform in carbon coating, has a dense secondary spherical morphology, is high in compaction density, can improve the electrochemical performance of the lithium-ion battery when applied to the lithium-ion battery, is high in specific capacity and good in cycle performance.

Abstract: A single-crystal-type multi-element positive electrode material, and a preparation method therefor and an application thereof.

Abstract: The present disclosure relates to the technical field of secondary battery, and discloses a positive electrode material and a preparation method and use therefor, a lithium-ion battery positive electrode poly piece, and a lithium-ion battery.

Abstract: The present disclosure relates to the technical field of positive electrode materials of lithium ion batteries. Disclosed a positive electrode material having a multi-cavity structure and a preparation method therefor, and a lithium ion battery. The positive electrode material is formed by aggregation of a plurality of primary particles, and some of the primary particles grow in an oriented manner to form supporting structures, the supporting structures overlapping each other inside the positive electrode material to form a plurality of cavities. The particle strength of the positive electrode material is significantly improved, so that the positive electrode material has the advantage of a long service life. In addition, the impedance of the positive electrode material is reduced, thereby improving the power performance of the positive electrode material.

Abstract: A positive electrode material, a preparation method therefor, and an application thereof are disclosed. The cathode material is composed of secondary particles agglomerated by primary particles; wherein individual secondary particle contains an inner core structure, a middle layer, and a shell layer, in this order, along a direction from a center to a surface of the secondary particle; wherein the middle layer is distributed in a circular ring shape; and wherein the secondary particle has a structure of close packing of an inner core structure, loose and porous middle layer, and close packing of the shell layer.

Abstract: Disclosed are a surface-coated positive electrode material and a preparation method therefor, and a lithium ion battery. The surface-coated cathode material contains a substrate and a coating layer coated on a surface of the substrate, and the coating layer has a bimodal distribution of characteristic peaks at 31°-35° of 2? tested by X-Ray Diffraction (XRD); and a ratio Ib/Ia of a peak intensity Ib of a secondary peak to a peak intensity Ia of a primary peak in a bimodal distribution is within a range of 0.8-1, preferably within a range of 0.97-1.