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1. WO2020091059 - NONAQUEOUS ELECTROLYTE SECONDARY BATTERY

Publication Number WO/2020/091059
Publication Date 07.05.2020
International Application No. PCT/JP2019/043095
International Filing Date 01.11.2019
IPC
H01M 10/0525 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
052Li-accumulators
0525Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
H01M 10/0566 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
056characterised by the materials used as electrolytes, e.g. mixed inorganic/organic electrolytes
0564the electrolyte being constituted of organic materials only
0566Liquid materials
H01M 10/0585 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
0585of accumulators having only flat construction elements, i.e. flat positive electrodes, flat negative electrodes and flat separators
H01M 2/16 2006.01
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
2Constructional details, or processes of manufacture, of the non-active parts
14Separators; Membranes; Diaphragms; Spacing elements
16characterised by the material
Applicants
  • 住友化学株式会社 SUMITOMO CHEMICAL COMPANY, LIMITED [JP]/[JP]
Inventors
  • 有瀬 一郎 ARISE, Ichiro
  • 倉金 孝輔 KURAKANE, Kosuke
  • 村上 力 MURAKAMI, Chikara
Agents
  • 長谷川 和哉 HASEGAWA, Kazuya
  • 鶴田 健太郎 TSURUTA, Kentaro
Priority Data
2018-20678501.11.2018JP
Publication Language Japanese (JA)
Filing Language Japanese (JA)
Designated States
Title
(EN) NONAQUEOUS ELECTROLYTE SECONDARY BATTERY
(FR) BATTERIE SECONDAIRE À ÉLECTROLYTE NON AQUEUX
(JA) 非水電解液二次電池
Abstract
(EN)
The purpose of the present invention is to provide a nonaqueous electrolyte secondary battery with excellent charge recovery capacity even after a charge/discharge cycle. This nonaqueous electrolyte secondary battery is provided with: a positive electrode plate and a negative electrode plate in which the number of bendings before the active substance layer is peeled off is at least a prescribed number; and a porous layer in which the aspect ratio of a projected image of an inorganic filler on the surface is 1.4-4.0, and the maximum value of the peak intensity ratio I(hkl)/I(abc) is in the range 1.5-300.
(FR)
La présente invention vise à fournir une batterie secondaire à électrolyte non aqueux qui présente une excellente capacité de récupération de charge même après un cycle de charge/décharge. Cette batterie secondaire à électrolyte non aqueux comprend : une électrode positive plane et une électrode négative plane dont le nombre de pliages avant que la couche de substance active ne se décolle est au moins un nombre prescrit ; et une couche poreuse dont le facteur de forme d'une image projetée d'une charge inorganique sur la surface est de 1,4 à 4,0, et la valeur maximale du rapport d'intensité de crête I(hkl)/I(abc) se situe dans la plage de 1,5 à 300.
(JA)
本発明の目的は、充放電サイクル後も充電回復容量が良好な非水電解液二次電池を提供することである。本発明に係る非水電解液二次電池は、活物質層が剥がれるまでの折り曲げ回数が所定回数以上である正極板および負極板と、表面の無機フィラーの投影像のアスペクト比が1.4~4.0であり、ピーク強度比:I(hkl)/I(abc)の最大値が1.5~300の範囲である多孔質層とを備える。
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