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1. (WO2019039399) NEGATIVE ELECTRODE FOR LITHIUM ION SECONDARY BATTERY AND LITHIUM ION SECONDARY BATTERY CONTAINING THE SAME
Latest bibliographic data on file with the International BureauSubmit observation

Pub. No.: WO/2019/039399 International Application No.: PCT/JP2018/030511
Publication Date: 28.02.2019 International Filing Date: 17.08.2018
IPC:
H01M 4/134 (2010.01) ,H01M 4/38 (2006.01) ,H01M 4/62 (2006.01) ,H01M 4/66 (2006.01) ,H01M 10/052 (2010.01) ,H01M 10/0567 (2010.01)
H ELECTRICITY
01
BASIC ELECTRIC ELEMENTS
M
PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
4
Electrodes
02
Electrodes composed of, or comprising, active material
13
Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators; Processes of manufacture thereof
134
Electrodes based on metals, Si or alloys
H ELECTRICITY
01
BASIC ELECTRIC ELEMENTS
M
PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
4
Electrodes
02
Electrodes composed of, or comprising, active material
36
Selection of substances as active materials, active masses, active liquids
38
of elements or alloys
H ELECTRICITY
01
BASIC ELECTRIC ELEMENTS
M
PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
4
Electrodes
02
Electrodes composed of, or comprising, active material
62
Selection of inactive substances as ingredients for active masses, e.g. binders, fillers
H ELECTRICITY
01
BASIC ELECTRIC ELEMENTS
M
PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
4
Electrodes
02
Electrodes composed of, or comprising, active material
64
Carriers or collectors
66
Selection of materials
H ELECTRICITY
01
BASIC ELECTRIC ELEMENTS
M
PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
10
Secondary cells; Manufacture thereof
05
Accumulators with non-aqueous electrolyte
052
Li-accumulators
H ELECTRICITY
01
BASIC ELECTRIC ELEMENTS
M
PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
10
Secondary cells; Manufacture thereof
05
Accumulators with non-aqueous electrolyte
056
characterized by the materials used as electrolytes, e.g. mixed inorganic/organic electrolytes
0564
the electrolyte being constituted of organic materials only
0566
Liquid materials
0567
characterised by the additives
Applicants:
日本電気株式会社 NEC CORPORATION [JP/JP]; 東京都港区芝五丁目7番1号 7-1, Shiba 5-chome, Minato-ku, Tokyo 1088001, JP
Inventors:
川崎 大輔 KAWASAKI, Daisuke; JP
長谷川 卓哉 HASEGAWA, Takuya; JP
大塚 隆 OHTSUKA, Takashi; JP
Agent:
伊藤 克博 ITO, Katsuhiro; JP
Priority Data:
2017-16113324.08.2017JP
Title (EN) NEGATIVE ELECTRODE FOR LITHIUM ION SECONDARY BATTERY AND LITHIUM ION SECONDARY BATTERY CONTAINING THE SAME
(FR) ÉLECTRODE NÉGATIVE POUR ACCUMULATEUR LITHIUM-ION ET ACCUMULATEUR LITHIUM-ION LA CONTENANT
(JA) リチウムイオン二次電池用負極およびこれを含むリチウムイオン二次電池
Abstract:
(EN) Provided is a lithium ion secondary battery having high energy density and excellent cycling characteristics. The present invention relates to a negative electrode for a lithium ion secondary battery, the negative electrode including a negative electrode collector and a negative electrode mixture layer comprising a negative electrode active material and a negative electrode binder, wherein the negative electrode active material comprises a silicon-containing alloy (Si alloy). The Si alloy is crystalline and the median diameter (D50 particle diameter) thereof is less than or equal to 1.2 μm, and the ratio of the negative electrode binder included in the negative electrode mixture layer by weight is between 12-50 wt%.
(FR) L’invention concerne un accumulateur lithium-ion ayant une haute densité d’énergie et d’excellentes caractéristiques de cycle. La présente invention porte sur une électrode négative pour un accumulateur lithium-ion, l’électrode négative incluant un collecteur d’électrode négative et une couche de mélange d’électrode négative comprenant un matériau actif d’électrode négative et un liant d’électrode négative, le matériau actif d’électrode négative comprenant un alliage contenant du silicium (alliage au Si). L’alliage au Si est cristallin et son diamètre médian (diamètre de particules D50) est inférieur ou égal à 1,2 µm, et le ratio du liant d’électrode négative inclus dans la couche de mélange d’électrode négative en poids est compris entre 12 et 50 % en poids.
(JA) エネルギー密度が高く、かつ、サイクル特性に優れたリチウムイオン二次電池を提供する。本発明は、負極活物質および負極結着剤を含む負極合剤層と、負極集電体とを含み、前記負極活物質は、シリコンを含む合金(Si合金)を含み、前記Si合金は、結晶性を有し、そのメジアン径(D50粒径)は1.2μm以下であり、負極合剤層の重量に対する負極結着剤の含有量が、12重量%以上50重量%以下である、リチウムイオン二次電池用負極に関する。
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Designated States: AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DJ, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IR, IS, JO, JP, KE, KG, KH, KN, KP, KR, KW, KZ, LA, LC, LK, LR, LS, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SA, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW
African Regional Intellectual Property Organization (ARIPO) (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Organization (AM, AZ, BY, KG, KZ, RU, TJ, TM)
European Patent Office (AL, AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, KM, ML, MR, NE, SN, TD, TG)
Publication Language: Japanese (JA)
Filing Language: Japanese (JA)