# US 2025/0096259 A1 · Positive electrode sheet, electrochemical device including the positive electrode sheet, and electronic device > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2025/0096259 A1 - Document ID: US20250096259A1 - Status: Published application - Kind: A1 - Application number: 18/764,135 - Filed: 2024-07-03 - Published: 2025-03-20 - Earliest claimed: 2023-09-20 - Assignees: CALB Group Co., Ltd. - Applicants: CALB Group Co., Ltd. - Inventors: Fengyi Zong; Kui Cui - Web page: https://patentgrep.com/patent/US20250096259A1 ## CPC - H01M 4/525: of mixed oxides or hydroxides containing iron, cobalt or nickel for inserting or intercalating light metals, e.g. LiNiO2, LiCoO2 or LiCoOxFy - C01G 53/506: with the molar ratio of nickel with respect to all the metals other than alkali metals higher than or equal to 0.8, e.g. Li(MzNixCoyMn1-x-y-z)O2 with x ≥ 0.8 - C01G 53/82: Compounds containing nickel, with or without oxygen or hydrogen, and containing two or more other elements - H01M 4/131: Electrodes based on mixed oxides or hydroxides, or on mixtures of oxides or hydroxides, e.g. LiCoOx - H01M 4/36: Selection of substances as active materials, active masses, active liquids - H01M 4/505: of mixed oxides or hydroxides containing manganese for inserting or intercalating light metals, e.g. LiMn2O4 or LiMn2OxFy - H01M 4/62: Selection of inactive substances as ingredients for active masses, e.g. binders, fillers - H01M 10/0525: Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries - C01P 2002/52: containing elements as dopants - C01P 2002/72: by d-values or two theta-values, e.g. as X-ray diagram - C01P 2004/61: Micrometer sized, i.e. from 1-100 micrometer - H01M 2004/021: {Physical characteristics, e.g. porosity, surface area} - H01M 2004/028: {Positive electrodes} - Y02E 60/10: Energy storage using batteries - H01M: PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY - C01G: COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F (metal hydrides {monoborane, diborane or addition complexes thereof} C01B6/00; salts of oxyacids of halogens C01B11/00; peroxides, salts or peroxyacids C01B15/00; thiosulfates, dithionites, polythionates C01B17/64; compounds containing selenium, or tellurium C01B19/00; binary compounds of nitrogen with metals C01B21/06; azides C01B21/08; {compounds containing nitrogen, other non-metals and metal C01B21/082}; metal amides C01B21/092; nitrites C01B21/50; {compounds of noble gases C01B23/0005}; phosphides C01B25/08; salts of oxyacids of phosphorus C01B25/16; carbides C01B32/90; compounds containing silicon C01B33/00; compounds containing boron C01B35/00; compounds having molecular sieve properties but not having base-exchange properties C01B37/00; compounds having molecular sieve and base-exchange properties, e.g. crystalline zeolites, C01B39/00; cyanides C01C3/08; salts of cyanamide C01C3/16; thiocyanates C01C3/20) - C01P: INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS - Y02E: REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION ## Abstract The present invention discloses a positive electrode sheet, an electrochemical device including the positive electrode sheet, and an electronic device. The positive electrode sheet of the present invention includes a positive electrode current collector and a positive electrode active material layer, wherein the positive electrode active material layer includes a positive electrode active material, and the positive electrode active material includes a ternary positive electrode material containing boron, zirconium and aluminum; the positive electrode sheet satisfies an equation as follows: 11.0≤[F101+(DFW/4.5)]×1.85±ln(M)≤17.0; where F101 is a half-peak breadth of a diffraction peak of the positive electrode active material at a position of 36.6±1° in an XRD spectrum; DFW is a full width at half maximum of particle size volume distribution of the positive electrode active material; and M is a total mass proportion of the trace elements in the positive electrode active material. ## Claims ### Claim 1 A positive electrode sheet comprising a positive electrode current collector and a positive electrode active material layer provided on at least one surface of the positive electrode current collector, wherein the positive electrode active material layer includes a positive electrode active material, the positive electrode active material includes a ternary positive electrode material containing trace elements; the trace elements are boron, zirconium and aluminum; the positive electrode sheet satisfies an equation of: 11. ≤ [ F 101 + ( D FW / 4 . 5 ) ] × 1.85 + ln ⁡ ( M ) ≤ 1 7. ; in the equation, the F101 is a half-peak breadth, in the unit of °, of a diffraction peak at a position where a diffraction angle 2θ is 36.6±1° in an XRD spectrum of the positive electrode active material; DFW is a full width at half maximum, in the unit of μm, of particle size volume distribution of the positive electrode active material; and M is a total mass proportion, in the unit of ppm, of the trace elements in the positive electrode active material. ### Claim 2 (depends on 1) The positive electrode sheet according to claim 1, wherein the positive electrode sheet satisfies an equation of 13.0≤[F101+(DFW/4.5)]×1.85+ln (M)≤16.0. ### Claim 3 (depends on 1) The positive electrode sheet according to claim 1, wherein a range of F101 is from 0.2° to 1.6°. ### Claim 4 (depends on 3) The positive electrode sheet according to claim 3, wherein a range of F101 is from 0.8° to 1.35°. ### Claim 5 (depends on 1) The positive electrode sheet according to claim 1, wherein a range of DFW is from 4 μm to 15 μm. ### Claim 6 (depends on 5) The positive electrode sheet according to claim 5, wherein a range of DFW is from 8 μm to 13 μm. ### Claim 7 (depends on 1) The positive electrode sheet according to claim 1, wherein a range of M is from 2,500 ppm to 7,000 ppm. ### Claim 8 (depends on 7) The positive electrode sheet according to claim 7, wherein a range of M is from 2,800 ppm to 5,000 ppm. ### Claim 9 (depends on 7) The positive electrode sheet according to claim 7, wherein contents of B, Al and Zr in the trace elements satisfy an equation of −20≤(3×MB+1.3×MZr−2×MAl)/100≤30; in the equation, MB, MZr and MAl are mass proportions, in the unit of ppm, of boron, zirconium and aluminum in the positive electrode active material, respectively. ### Claim 10 (depends on 9) The positive electrode sheet according to claim 9, wherein the content of B, Al and Zr in the trace elements satisfies an equation of −8≤(3×MB+1.3×MZr−2×MAl)/100≤15. ### Claim 11 (depends on 9) The positive electrode sheet according to claim 9, comprising at least one of the features described in (a) to (c) below: (a) the mass proportion of the boron in the positive electrode active material is 300-1,000 ppm; (b) the mass proportion of the zirconium in the positive electrode active material is 1,000-3,000 ppm; and (c) the mass proportion of the aluminum in the positive electrode active material is 1,000-4,000 ppm. ### Claim 12 (depends on 1) The positive electrode sheet according to claim 1, wherein the ternary positive electrode material has a formula of LiNixCoyMn(1-x-y) O2, where 0.75≤x<1, 0