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1. WO2020110690 - NEGATIVE ELECTRODE FOR NONAQUEOUS ELECTROLYTE SECONDARY BATTERY, AND NONAQUEOUS ELECTROLYTE SECONDARY BATTERY

Publication Number WO/2020/110690
Publication Date 04.06.2020
International Application No. PCT/JP2019/044175
International Filing Date 11.11.2019
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 4/587 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
36Selection of substances as active materials, active masses, active liquids
58of inorganic compounds other than oxides or hydroxides, e.g. sulfides, selenides, tellurides, halogenides or LiCoFy; of polyanionic structures, e.g. phosphates, silicates or borates
583Carbonaceous material, e.g. graphite-intercalation compounds or CFx
587for inserting or intercalating light metals
H01M 4/62 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
62Selection of inactive substances as ingredients for active masses, e.g. binders, fillers
CPC
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 4/587
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
36Selection of substances as active materials, active masses, active liquids
58of inorganic compounds other than oxides or hydroxides, e.g. sulfides, selenides, tellurides, halogenides or LiCoFy; of polyanionic structures, e.g. phosphates, silicates or borates
583Carbonaceous material, e.g. graphite-intercalation compounds or CFx
587for inserting or intercalating light metals
H01M 4/62
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
62Selection of inactive substances as ingredients for active masses, e.g. binders, fillers
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
  • 続木 康平 TSUZUKI Kouhei
  • 森川 有紀 MORIKAWA Yuki
  • 和田 宏一 WADA Hirokazu
  • 柳田 勝功 YANAGIDA Katsunori
Agents
  • 鎌田 健司 KAMATA Kenji
  • 野村 幸一 NOMURA Koichi
Priority Data
2018-22570630.11.2018JP
Publication Language Japanese (JA)
Filing Language Japanese (JA)
Designated States
Title
(EN) NEGATIVE ELECTRODE FOR NONAQUEOUS ELECTROLYTE SECONDARY BATTERY, AND NONAQUEOUS ELECTROLYTE SECONDARY BATTERY
(FR) ÉLECTRODE NÉGATIVE POUR ACCUMULATEUR À ÉLECTROLYTE NON AQUEUX, ET ACCUMULATEUR À ÉLECTROLYTE NON AQUEUX
(JA) 非水電解質二次電池用負極及び非水電解質二次電池
Abstract
(EN)
A negative electrode for a nonaqueous electrolyte secondary battery, said negative electrode comprising a negative-electrode current collector, and a negative-electrode active material layer provided upon the negative-electrode current collector, wherein the negative-electrode active material layer includes a negative-electrode active material and carboxymethyl cellulose, wherein the molecular weight of the carboxymethyl cellulose in an area that extends 10% in the thickness direction from the surface of the negative-electrode current collector side of the negative-electrode active material layer is smaller than that of the carboxymethyl cellulose in an area that extends 10% in the thickness direction from the surface of the reverse side of the negative-electrode active material layer from the negative-electrode current collector.
(FR)
L'invention porte sur une électrode négative pour accumulateur à électrolyte non aqueux, ladite électrode négative comprenant un collecteur de courant d'électrode négative et une couche de matériau actif d'électrode négative disposée sur le collecteur de courant d'électrode négative, la couche de matériau actif d'électrode négative comprenant un matériau actif d'électrode négative et de la carboxyméthylcellulose, le poids moléculaire de la carboxyméthylcellulose dans une zone qui s'étend sur 10 % dans la direction de l'épaisseur à partir de la surface du côté collecteur de courant d'électrode négative de la couche de matériau actif d'électrode négative étant plus petit que celui de la carboxyméthylcellulose dans une zone qui s'étend sur 10 % dans la direction de l'épaisseur à partir de la surface du côté de la couche de matériau actif d'électrode négative opposé au collecteur de courant d'électrode négative.
(JA)
非水電解質二次電池用負極は、負極集電体と、負極集電体上に設けられた負極活物質層と、を有し、負極活物質層は、負極活物質と、カルボキシメチルセルロースとを含み、負極活物質層における負極集電体側の表面から厚み方向の10%の領域中の前記カルボキシメチルセルロースは、負極集電体と反対側の表面から厚み方向の10%の領域中の前記カルボキシメチルセルロースより、分子量が小さいことを特徴とする。
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