Some content of this application is unavailable at the moment.
If this situation persist, please contact us atFeedback&Contact
1. (WO2017094712) LITHIUM ION SECONDARY BATTERY
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/2017/094712 International Application No.: PCT/JP2016/085387
Publication Date: 08.06.2017 International Filing Date: 29.11.2016
IPC:
H01M 10/052 (2010.01) ,H01M 4/38 (2006.01) ,H01M 4/48 (2010.01) ,H01M 4/62 (2006.01) ,H01M 10/0567 (2010.01) ,H01M 10/058 (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
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
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
36
Selection of substances as active materials, active masses, active liquids
48
of inorganic oxides or hydroxides
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
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
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
058
Construction or manufacture
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:
島貫 伊紀子 SHIMANUKI, Ikiko; JP
玉井 卓 TAMAI, Suguru; JP
川崎 大輔 KAWASAKI, Daisuke; JP
石川 仁志 ISHIKAWA, Hitoshi; JP
Agent:
伊藤 克博 ITO, Katsuhiro; JP
小野 暁子 ONO, Akiko; JP
Priority Data:
2015-23273630.11.2015JP
Title (EN) LITHIUM ION SECONDARY BATTERY
(FR) BATTERIE RECHARGEABLE AU LITHIUM-ION
(JA) リチウムイオン二次電池
Abstract:
(EN) If the particle diameters of a silicon material used for a negative electrode active material are small, a large surface area thereof easily causes a side reaction between the active material and an electrolyte solvent to occur, and the cycle characteristics of a lithium ion secondary battery decrease. In order to improve the cycle characteristics, a lithium ion secondary battery according to the present invention is a lithium ion secondary battery having: a negative electrode containing a material containing silicon as a constituent element and a polyacrylic acid; and an electrolyte containing a fluoroethylene carbonate and is characterized in that the 50% particle diameter of the material containing silicon as a constituent element is 2 μm or less.
(FR) Selon la présente invention, si les diamètres des particules d'un matériau à base de silicium utilisé pour un matériau actif d'électrode négative sont petits, une grande surface de ce dernier provoque facilement l'apparition d'une réaction secondaire entre le matériau actif et un solvant électrolytique et les caractéristiques de cycle d'une batterie rechargeable au lithium-ion diminuent. Afin d'améliorer les caractéristiques de cycle, une batterie rechargeable au lithium-ion selon la présente invention est une batterie rechargeable au lithium-ion ayant : une électrode négative contenant un matériau contenant du silicium comme élément constitutif et un acide polyacrylique; et un électrolyte contenant un carbonate de fluoroéthylène et est caractérisée en ce que le diamètre de particule à 50 % du matériau contenant du silicium comme élément constitutif est égal ou inférieur à 2 µm.
(JA) 負極活物質に使用するケイ素材料の粒径が小さい場合、その大きな表面積により活物質と電解液溶媒との副反応が生じやすく、リチウムイオン二次電池のサイクル特性が低下する。サイクル特性を改善するために、本発明のリチウムイオン二次電池は、ケイ素を構成元素として含む材料およびポリアクリル酸を含む負極と、フルオロエチレンカーボネートを含む電解液とを有するリチウムイオン二次電池であって、前記ケイ素を構成元素として含む材料の50%粒径が2μm以下であることを特徴とする。
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, JP, KE, KG, 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)
Also published as:
CN108292779EP3386022US20180358610