Processing

Please wait...

Settings

Settings

Goto Application

1. WO2014157417 - NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY

Publication Number WO/2014/157417
Publication Date 02.10.2014
International Application No. PCT/JP2014/058685
International Filing Date 26.03.2014
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 2/02 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
02Cases, jackets or wrappings
H01M 4/36 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
36Selection of substances as active materials, active masses, active liquids
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
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
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
CPC
H01M 10/052
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
H01M 10/0585
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 2004/021
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
021Physical characteristics, e.g. porosity, surface area
H01M 2004/027
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
026characterised by the polarity
027Negative electrodes
H01M 2220/20
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
2220Batteries for particular applications
20Batteries in motive systems, e.g. vehicle, ship, plane
H01M 4/0404
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
04Processes of manufacture in general
0402Methods of deposition of the material
0404by coating on electrode collectors
Applicants
  • 日産自動車株式会社 NISSAN MOTOR CO., LTD. [JP]/[JP]
Inventors
  • 宮本 健史 MIYAMOTO, Takeshi
  • 松崎 生馬 MATSUZAKI, Ikuma
  • 本田 崇 HONDA, Takashi
  • 萩山 康介 HAGIYAMA, Kousuke
Agents
  • 八田国際特許業務法人 HATTA & ASSOCIATES
Priority Data
2013-06440426.03.2013JP
Publication Language Japanese (JA)
Filing Language Japanese (JA)
Designated States
Title
(EN) NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY
(FR) BATTERIE SECONDAIRE À ÉLECTROLYTE NON AQUEUX
(JA) 非水電解質二次電池
Abstract
(EN)
[Problem] To provide a means capable of suppressing a reduction in the binding force of a negative electrode active material layer by optimizing conditions for the suppression of gas generation and the removal of moisture in a case in which an aqueous binder and a viscosity improver are used in the negative electrode active material layer in a non-aqueous electrolyte secondary battery and a negative electrode thereof. [Solution] A negative electrode for a non-aqueous electrolyte secondary battery characterized in including a current collector and a negative electrode active material layer containing a negative electrode active material, an aqueous binder, and a viscosity improver having a hydroxyl group and an ester group, the content of the aqueous binder in the negative electrode active material layer being in a range from 1 to 3 mass% with respect to the total amount of the negative electrode active material layer, the content of the viscosity improver in the negative electrode active material layer being in a range from 0.5 to 1.5 mass% with respect to the total amount of the negative electrode active material layer, and the negative electrode active material layer satisfying formula (1): 0.10 ≤ X ≤ 1.00 (where X represents the ratio (C=O peak intensity/-OH peak intensity) of the peak intensity of an infrared absorption spectrum derived from a hydroxyl group in the negative electrode active material layer to the peak intensity of an infrared absorption spectrum derived from a carbonyl group of an ester in the negative electrode active material layer).
(FR)
La présente invention a pour objectif de proposer un moyen permettant de supprimer une réduction dans la force de liaison d'une couche de matériau actif d'électrode négative en optimisant les conditions de suppression de génération de gaz et de retrait d'humidité dans un cas d'utilisation de liant aqueux et d'améliorant de viscosité dans la couche de matériau actif d'électrode négative dans une batterie secondaire à électrolyte non aqueux et dans son électrode négative. Pour ce faire, une électrode négative pour batterie secondaire à électrolyte non aqueux est caractérisée en ce qu'elle contient un collecteur de courant et une couche de matériau actif d'électrode négative contenant un matériau actif d'électrode négative, un liant aqueux, et un améliorant de viscosité ayant un groupe hydroxyle et un groupe ester. Le contenu du liant aqueux dans la couche de matériau actif d'électrode négative se situe dans une gamme allant de 1 à 3 % en masse par rapport à la quantité totale de la couche de matériau actif d'électrode négative. Le contenu de l'améliorant de viscosité dans la couche de matériau actif d'électrode négative se situe dans une gamme allant de 0,5 à 1,5 % en masse par rapport à la quantité totale de la couche de matériau actif d'électrode négative. Et la couche de matériau actif d'électrode négative satisfait à la formule (1) : 0,10 ≤ X ≤ 1,00. Dans cette formule, X représente le rapport (intensité de pic C=O/intensité de pic -OH) entre le pic d'intensité d'un spectre d'absorption infrarouge dérivé d'un groupe hydroxyle dans la couche de matériau actif d'électrode négative et le pic d'intensité d'un spectre d'absorption infrarouge dérivé d'un groupe carbonyle d'un ester dans la couche de matériau actif d'électrode négative.
(JA)
【課題】非水電解質二次電池及びその負極において、水系バインダ及び増粘剤を負極活物質層に用いた場合に、ガス発生の抑制、水分除去に対する条件について最適化することで、負極活物質層の結着力低下を抑制できる手段を提供する。 【解決手段】集電体と、負極活物質、水系バインダ、およびヒドロキシ基とエステル基とを有する増粘剤を含む負極活物質層と、を含み、前記負極活物質層中の水系バインダの含有量が、負極活物質層全量に対して、1~3質量%であり、前記負極活物質層中の増粘剤の含有量が、負極活物質層全量に対して、0.5~1.5質量%であり、前記負極活物質層が式(1):0.10≦X≦1.00(上記式中、Xは、前記負極活物質層のエステルのカルボニル基に由来する赤外吸収スペクトルのピーク強度に対する、前記負極活物質層のヒドロキシ基に由来する赤外吸収スペクトルのピーク強度の比(C=Oピーク強度/-OHピーク強度)である。)を満たすことを特徴とする非水電解質二次電池用負極。
Latest bibliographic data on file with the International Bureau