# US 10,374,220 B2 · Nonaqueous electrolyte battery > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,374,220 B2 - Document ID: US10374220B2 - Status: Granted - Kind: B2 - Application number: 14/477,099 - Filed: 2014-09-04 - Published: 2015-03-19 - Granted: 2019-08-06 - Earliest claimed: 2013-09-18 - Assignees: Kabushiki Kaisha Toshiba - Applicants: Kabushiki Kaisha Toshiba - Inventors: Hikaru Yoshikawa; Kazuya Kuriyama; Hidesato Saruwatari; Masanori Tanaka; Tetsuro Kano - Web page: https://patentgrep.com/patent/US10374220B2 ## CPC - H01M 4/131: Electrodes based on mixed oxides or hydroxides, or on mixtures of oxides or hydroxides, e.g. LiCoOx - H01M 4/366: {as layered products} - H01M 4/485: of mixed oxides or hydroxides for inserting or intercalating light metals, e.g. LiTi2O4 or LiTi2OxFy (H01M4/505, H01M4/525 take precedence) - H01M 4/505: of mixed oxides or hydroxides containing manganese for inserting or intercalating light metals, e.g. LiMn2O4 or LiMn2OxFy - 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 - H01M 4/623: {fluorinated polymers} - H01M 4/625: {Carbon or graphite} - H01M 10/0525: Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries - C01P 2004/51: Particles with a specific particle size distribution - C01P 2004/61: Micrometer sized, i.e. from 1-100 micrometer - H01M 2004/021: {Physical characteristics, e.g. porosity, surface area} - Y02E 60/10: Energy storage using batteries - Y02T 10/70: Energy storage systems for electromobility, e.g. batteries - H01M: PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY - 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 - Y02T: CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION ## Abstract According to one embodiment, there is provided a nonaqueous electrolyte battery including a positive electrode. The positive electrode includes a positive electrode active material-containing layer. The positive electrode active material-containing layer includes at least one lithium-nickel composite oxide and a conductive agent. The positive electrode active material-containing layer has, in a particle size distribution obtained by a laser diffraction scattering method, an average particle diameter d50 within a range of 1 μm to 5.5 μm, a maximum particle diameter within a range of 10 μm to 100 μm, a particle diameter d10 within a range of 0.5 μm to 3 μm, and X, represented by X=(d50−d10)/d50, within a range of 0.5 to less than 1. ## Claims ### Claim 1 A nonaqueous electrolyte battery comprising: a positive electrode comprising a positive electrode current collector and a positive electrode active material-containing layer formed on the positive electrode current collector, the positive electrode active material-containing layer consisting of a binder and a mixture of particles of at least one lithium-nickel composite oxide and particles of a conductive agent; a negative electrode; and a nonaqueous electrolyte, wherein the mixture of the particles of the at least one lithium-nickel composite oxide and the particles of the conductive agent in the positive electrode active material-containing layer has such a particle size distribution obtained by a laser diffraction scattering method, an average particle diameter d50 within a range of 1 μm to 5.5 μm, a maximum particle diameter within a range of 10 μm to 100 μm, a particle diameter d10 within a range of 0.5 μm to 3 μm, and X, represented by X=(d50−d10)/d50, is within a range of 0.70 to less than 1, a particle diameter of the particles of the conductive agent is smaller than an average particle diameter of the particles of the at least one lithium-nickel composite oxide, and the lithium-nickel composite oxide comprises at least one selected from the group consisting of Li—Ni—Al composite oxides, Li—Ni—Co—Mn composite oxides, and Li—Ni—Mn composite oxides. ### Claim 2 (depends on 1) The nonaqueous electrolyte battery according to claim 1, wherein the positive electrode active material-containing layer has a content of nickel element within a range of 23% by weight to 45% by weight. ### Claim 3 (depends on 2) The nonaqueous electrolyte battery according to claim 2, wherein the conductive agent comprises a carbon material. ### Claim 4 (depends on 3) The nonaqueous electrolyte battery according to claim 3, wherein the carbon material is at least one selected from the group consisting of acetylene black, Ketjen black, furnace black, graphite, and carbon nanotube. ### Claim 5 (depends on 2) The nonaqueous electrolyte battery according to claim 2, wherein the positive electrode active material-containing layer has a density within a range of 2.4 g/cm3 to 3.6 g/cm3. ### Claim 6 (depends on 2) The nonaqueous electrolyte battery according to claim 2, wherein the conductive agent comprises a carbon material, which is at least one of acetylene black, Ketjen black, furnace black, and graphite, and the binder comprises at least one of hexafluoropropylene and polytereafluoroethylene. ### Claim 7 (depends on 1) The nonaqueous electrolyte battery according to claim 1, wherein the negative electrode comprising a negative electrode active material-containing layer, the negative electrode active material-containing layer comprising at least one lithium titanate. ### Claim 8 (depends on 7) The nonaqueous electrolyte battery according to claim 7, the negative electrode active material-containing layer comprises lithium titanate having spinel structure. ### Claim 9 (depends on 1) The nonaqueous electrolyte battery according to claim 1, wherein the binder comprises at least one selected from the group consisting of polyvinylidene fluoride, hexafluoropropylene, and polytetrafluoroethylene. ### Claim 10 (depends on 1) The nonaqueous electrolyte battery according to claim 1, wherein the average particle diameter d50 is within a range of 3.0 μm to 3.9 μm. ### Claim 11 (depends on 1) The nonaqueous electrolyte battery according to claim 1, wherein the particle diameter d10 is within a range of 0.90 μm to 1.51 μm. ### Claim 12 (depends on 1) The nonaqueous electrolyte battery according to claim 1, wherein the X is within a range of 0.70 to 0.73. ### Claim 13 (depends on 1) The nonaqueous electrolyte battery according to claim 1, wherein the negative electrode comprises a negative electrode active material-containing layer, the negative electrode active material-containing layer comprising at least one lithium titanate, The positive electrode active material-containing layer has a content of nickel element within a range of 23% by weight to 45% by weight, the conductive agent comprises a carbon material, which is at least one of acetylene black, Ketjen black, furnace black, and graphite, and the binder comprises at least one of hexafluoropropylene and polytetrafluoroethylene.