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1. WO2019044491 - ELECTRODE FOR ELECTRICITY STORAGE DEVICES AND METHOD FOR PRODUCING SAME

Publication Number WO/2019/044491
Publication Date 07.03.2019
International Application No. PCT/JP2018/030262
International Filing Date 14.08.2018
IPC
H01M 4/134 2010.1
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
134Electrodes based on metals, Si or alloys
H01M 4/13 2010.1
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 4/1395 2010.1
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
139Processes of manufacture
1395of electrodes based on metals, Si or alloys
H01M 4/38 2006.1
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
38of elements or alloys
H01M 4/48 2010.1
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
48of inorganic oxides or hydroxides
H01M 4/62 2006.1
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 10/0525
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 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 4/134
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
134Electrodes based on metals, Si or alloys
H01M 4/1395
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
139Processes of manufacture
1395of electrodes based on metals, Si or alloys
H01M 4/366
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
362Composites
366as layered products
Applicants
  • 日本電気株式会社 NEC CORPORATION [JP]/[JP]
Inventors
  • 玉井 卓 TAMAI, Suguru
  • 石川 仁志 ISHIKAWA, Hitoshi
Agents
  • 伊藤 克博 ITO, Katsuhiro
Priority Data
2017-16639931.08.2017JP
Publication Language Japanese (ja)
Filing Language Japanese (JA)
Designated States
Title
(EN) ELECTRODE FOR ELECTRICITY STORAGE DEVICES AND METHOD FOR PRODUCING SAME
(FR) ÉLECTRODE POUR DISPOSITIFS DE STOCKAGE D'ÉLECTRICITÉ ET SON PROCÉDÉ DE FABRICATION
(JA) 蓄電デバイス用電極及びその製造方法
Abstract
(EN) The purpose of the present invention is to provide a lithium ion secondary battery which has high energy density and improved cycle characteristics. The present invention relates to an electrode for electricity storage devices, which is provided with a negative electrode mixture layer that contains (a) a negative electrode active material (42-2) which contains 1% or more of a material that contains Si as a constituent element, (b) a first polymer (42-1) which covers the negative electrode active material and contains vinylidene fluoride as a monomer unit, and (c) a negative electrode binder (42-3) which contains a second polymer that contains at least one monomer unit selected from the group consisting of acrylic acid, acrylic acid salts, methacrylic acid and methacrylic acid salts, while having a molecular weight of 80,000 or more.
(FR) L'objectif de la présente invention est de fournir une pile auxiliaire au lithium-ion qui présente une haute densité énergétique et des caractéristiques de cycle améliorées. La présente invention concerne une électrode pour dispositifs de stockage d'électricité, qui est pourvue d'une couche de mélange d'électrode négative qui contient (a) un matériau actif d'électrode négative (42-2) qui contient 1 % ou plus d'un matériau qui contient du Si en tant qu'élément constitutif, (b) un premier polymère (42-1) qui recouvre le matériau actif d'électrode négative et contient du fluorure de vinylidène en tant qu'unité monomère, et (c) un liant d'électrode négative (42-3) qui contient un second polymère qui contient au moins une unité monomère choisie dans le groupe constitué par l'acide acrylique, les sels d'acide acrylique, l'acide méthacrylique et les sels d'acide méthacrylique, tout en ayant un poids moléculaire de 80 000 ou plus.
(JA) 本発明は、エネルギー密度が高く、サイクル特性が改善されたリチウムイオン二次電池を提供することを目的とする。本発明は、(a)Siを構成元素として含む材料を1%以上含む負極活物質(42-2)、(b)負極活物質を被覆する、フッ化ビニリデンをモノマー単位として含む第1ポリマー(42-1)、および(c)アクリル酸、アクリル酸塩、メタクリル酸、およびメタクリル酸塩からなる群より選ばれる少なくとも1種のモノマー単位を含む、分子量8万以上の第2ポリマーを含む負極バインダ(42-3)を含有する負極合剤層を備える蓄電デバイス用電極に関する。
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