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1. WO2020195055 - SECONDARY BATTERY

Publication Number WO/2020/195055
Publication Date 01.10.2020
International Application No. PCT/JP2020/001881
International Filing Date 21.01.2020
IPC
H01M 4/02 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
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 10/04 2006.01
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
10Secondary cells; Manufacture thereof
04Construction or manufacture in general
H01M 10/052 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
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
  • 高橋 崇寛 TAKAHASHI Takahiro
  • 吉井 一洋 YOSHII Kazuhiro
Agents
  • 鎌田 健司 KAMATA Kenji
  • 野村 幸一 NOMURA Koichi
Priority Data
2019-05961527.03.2019JP
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 including a positive electrode core and a positive electrode mixture layer provided on the surface of the positive electrode core; and a negative electrode including a negative electrode core and a negative electrode mixture layer provided on the surface of the negative electrode core. At least one among the positive electrode mixture layer and the negative electrode mixture layer has a layer thickness variation coefficient of 0.01-0.30 or a layer surface tortuosity of 1.2-2.0.
(FR)
Cette batterie secondaire comprend : une électrode positive comprenant un noyau d'électrode positive et une couche de mélange d'électrode positive disposée sur la surface du noyau d'électrode positive ; et une électrode négative comprenant un noyau d'électrode négative et une couche de mélange d'électrode négative disposée sur la surface du noyau d'électrode négative. Au moins l'une parmi la couche de mélange d'électrode positive et la couche de mélange d'électrode négative a un coefficient de variation d'épaisseur de couche de 0,01 à 0,30 ou une tortuosité de surface de couche de 1,2 à 2,0.
(JA)
二次電池は、正極芯体、及び正極芯体の表面に設けられた正極合剤層を含む正極と、負極芯体、及び負極芯体の表面に設けられた負極合剤層を含む負極とを備える。正極合剤層及び負極合剤層の少なくとも一方は、層厚みの変動係数が0.01~0.30であるか、或いは層表面の曲路率が1.2~2.0である。
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