# US 10,770,716 B2 · Non-aqueous electrolyte secondary battery > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,770,716 B2 - Document ID: US10770716B2 - Status: Granted - Kind: B2 - Application number: 16/308,136 - Filed: 2016-06-08 - Published: 2019-05-30 - Granted: 2020-09-08 - Earliest claimed: 2016-06-08 - Assignees: Envision AESC Japan Ltd. - Applicants: Envision AESC Japan Ltd. - Inventors: Manabu Nishijima; Fumihiro Kawamura; Masanori Suenaga; Yuji Muroya - Web page: https://patentgrep.com/patent/US10770716B2 ## CPC - H01M 4/131: Electrodes based on mixed oxides or hydroxides, or on mixtures of oxides or hydroxides, e.g. LiCoOx - H01M 4/13: Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators; Processes of manufacture thereof - H01M 4/133: Electrodes based on carbonaceous material, e.g. graphite-intercalation compounds or CFx - H01M 4/134: Electrodes based on metals, Si or alloys - 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 10/0525: Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries - H01M 10/056: characterised by the materials used as electrolytes, e.g. mixed inorganic/organic electrolytes - H01M 10/0566: Liquid materials - H01M 10/0567: characterised by the additives - H01M 10/0569: characterised by the solvents - H01M 10/052: Li-accumulators - H01M 2004/021: {Physical characteristics, e.g. porosity, surface area} - H01M 2010/4292: {Aspects relating to capacity ratio of electrodes/electrolyte or anode/cathode} - H01M 2300/002: Inorganic electrolyte - Y02E 60/10: Energy storage using batteries - Y02P 70/50: Manufacturing or production processes characterised by the final manufactured product - 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 - Y02E: REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION - Y02P: CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS - Y02T: CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION ## Abstract A flat stacked type non-aqueous electrolyte secondary battery includes: a positive electrode comprising a a positive electrode active material formed on a surface of a positive electrode current collector, a negative electrode comprising a negative electrode active material formed on a surface of a negative electrode current collector, and an electrolyte layer, wherein a ratio of a rated capacity to a pore volume of the negative electrode active material layer is 1.12 Ah/cc or more, a ratio of a battery area to a rated capacity is 4.0 cm2/Ah or more, and a rated capacity is 30 Ah or more, and the electrolyte layer contains an electrolyte solution containing an electrolyte salt dissolved and a value obtained by dividing a weight of an electrolyte salt in pores in the negative electrode active material layer by a weight of the negative electrode active material is 0.031 or more. ## Claims ### Claim 1 A flat stacked type non-aqueous electrolyte secondary battery comprising a power generating element including: a positive electrode comprising a positive electrode active material layer containing a positive electrode active material formed on a surface of a positive electrode current collector, a negative electrode comprising a negative electrode active material layer containing a negative electrode active material formed on a surface of a negative electrode current collector, and the negative electrode active material contains a carbon material, and an electrolyte layer, wherein a ratio of a rated capacity to a pore volume of the negative electrode active material layer is 1.12 Ah/cc or more, a ratio of a battery area to a rated capacity is 4.0 cm2/Ah or more, and a rated capacity is 30 Ah or more, the electrolyte layer contains an electrolyte solution containing an electrolyte salt dissolved in the electrolyte solution and a value obtained by dividing a weight of an electrolyte salt in pores in the negative electrode active material layer by a weight of the negative electrode active material is from 0.033 to 0.041, and wherein a Walden product of the electrolyte solution at 0° C. is from 2.9×10−6 to 3.2×10−6 Pa·s·S·m2·mol−1, and wherein a specific surface area of the negative electrode active material layer is from 1.7 to 2.6 m2/g. ### Claim 2 (depends on 1) The non-aqueous electrolyte secondary battery according to claim 1, wherein the ratio of a battery area to a rated capacity is 10 cm2/Ah or less or the rated capacity is 50 Ah or more. ### Claim 3 (depends on 1) The non-aqueous electrolyte secondary battery according to claim 1, wherein the positive electrode active material is a lithium composite oxide having a composition represented by LiaNibMncCodMxO2 (where a, b, c, d and x satisfy 0.9≤a≤1.2, 0