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1. WO2021039063 - SECONDARY BATTERY

Publication Number WO/2021/039063
Publication Date 04.03.2021
International Application No. PCT/JP2020/024532
International Filing Date 23.06.2020
IPC
H01M 4/13 2010.01
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
4Electrodes
02Electrodes composed of, or comprising, active material
13Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators; Processes of manufacture thereof
H01M 4/66 2006.01
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
4Electrodes
02Electrodes composed of, or comprising, active material
64Carriers or collectors
66Selection of materials
H01M 10/058 2010.01
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
10Secondary cells; Manufacture thereof
05Accumulators with non-aqueous electrolyte
058Construction or manufacture
CPC
H01M 10/058
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
10Secondary cells; Manufacture thereof
05Accumulators with non-aqueous electrolyte
058Construction or manufacture
H01M 4/13
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
4Electrodes
02Electrodes composed of or comprising active material
13Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators; Processes of manufacture thereof
H01M 4/66
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
4Electrodes
02Electrodes composed of or comprising active material
64Carriers or collectors
66Selection of materials
Applicants
  • パナソニックIPマネジメント株式会社 PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD. [JP]/[JP]
Inventors
  • 澁谷 聡 SHIBUTANI Satoshi
Agents
  • 鎌田 健司 KAMATA Kenji
  • 野村 幸一 NOMURA Koichi
Priority Data
2019-15469327.08.2019JP
Publication Language Japanese (JA)
Filing Language Japanese (JA)
Designated States
Title
(EN) SECONDARY BATTERY
(FR) BATTERIE SECONDAIRE
(JA) 二次電池
Abstract
(EN)
This secondary battery comprises a positive electrode, a negative electrode, a separator positioned between the positive electrode and the negative electrode, and an electrolyte. The positive electrode has a positive electrode current collector, a positive electrode mixture layer containing a positive electrode active material, and an additional layer containing an inactive material. The inactive material is an Li-containing transition metal oxide having a crystal structure belonging to one space group from among Fm3m, C2/M, Immm, and P3m1. The inactive material content of the additional layer is 60 mass% or greater, and the basis weight of the additional layer is 3.8 g/m2 to 50 g/m2 (inclusive).
(FR)
La présente invention concerne une batterie secondaire au lithium comprenant une électrode positive, une électrode négative, un séparateur qui est interposé entre l'électrode positive et l'électrode négative, et un électrolyte. L'électrode positive comprend un collecteur de courant d'électrode positive, une couche de mélange d'électrode positive contenant un matériau actif d'électrode positive, et une couche supplémentaire contenant un matériau inactif. Le matériau inactif est un oxyde de métal de transition contenant du lithium ayant une structure cristalline appartenant à un groupe spatial parmi Fm3m, C2/m, Immm et P3m1. La teneur en matériau inactif de la couche supplémentaire est supérieure ou égale à 60 % en masse, et le poids de base de la couche supplémentaire est compris entre 3.8 g/m2 et 50 g/m2 (inclus).
(JA)
二次電池は、正極と、負極と、前記正極と前記負極との間に配置されるセパレータと、電解質と、を備え、前記正極は、正極集電体と、正極活物質を含む正極合材層と、不活性材料を含む追加層と、を有し、前記不活性材料は、空間群Fm3m、C2/M、Immm、P3m1のいずれかに属する結晶構造を有するLi含有遷移金属酸化物であり、追加層中の前記不活性材料の含有量は、60質量%以上であり、前記追加層の目付量は3.8g/m以上50g/m以下である。
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