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1. (WO2019003721) LITHIUM-ION SECONDARY CELL
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Pub. No.: WO/2019/003721 International Application No.: PCT/JP2018/019597
Publication Date: 03.01.2019 International Filing Date: 22.05.2018
IPC:
H01M 4/13 (2010.01) ,H01M 4/66 (2006.01) ,H01M 10/052 (2010.01) ,H01M 10/0566 (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
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
Applicants:
株式会社村田製作所 MURATA MANUFACTURING CO.,LTD. [JP/JP]; 京都府長岡京市東神足1丁目10番1号 10-1, Higashikotari 1-chome, Nagaokakyo-shi, Kyoto 6178555, JP
Inventors:
藤岡真人 FUJIOKA, Masato; JP
Agent:
西澤均 NISHIZAWA, Hitoshi; JP
野末貴弘 NOZUE, Takahiro; JP
Priority Data:
2017-12955230.06.2017JP
Title (EN) LITHIUM-ION SECONDARY CELL
(FR) CELLULE SECONDAIRE AU LITHIUM-ION
(JA) リチウムイオン二次電池
Abstract:
(EN) A lithium-ion secondary cell 100, provided with: positive electrodes 11 having a positive electrode collector and a positive electrode mixture layer containing a positive electrode active material; negative electrodes 12 having a negative electrode collector and a negative electrode mixture layer containing a negative electrode active material; separators 13 located between the positive electrodes 11 and the negative electrodes 12; a non-aqueous electrolyte 14; and PTC layers provided between the positive electrode mixture layers and the positive electrode collectors, and/or between the negative electrode mixture layers and the negative electrode collectors, the PTC layers having a positive resistance temperature coefficient. The electronic resistance of the PTC layers at 120°C is at least 100 times higher than that at room temperature, and the swelling ratio of the PTC layer with respect to the non-aqueous electrolyte is no greater than 5%. Polar functional groups are present on the surface of the PTC layers at an amount at which the S/N ratio, which is the ratio between a signal derived from the polar functional groups measured by a Fourier transform infrared spectrophotometer, and measurement noise, is 3.0 or above.
(FR) L'invention concerne une cellule secondaire au lithium-ion 100 comprenant : des électrodes positives 11 ayant un collecteur d'électrode positive et une couche de mélange d'électrodes positives contenant un matériau actif d'électrode positive; des électrodes négatives 12 ayant un collecteur d'électrode négative et une couche de mélange d'électrodes négatives contenant un matériau actif d'électrode négative; des séparateurs 13 situés entre les électrodes positives 11 et les électrodes négatives 12; un électrolyte non aqueux 14; et des couches PTC disposées entre les couches de mélange d'électrodes positives et les collecteurs d'électrode positive, et/ou entre les couches de mélange d'électrodes négatives et les collecteurs d'électrode négative, les couches PTC ayant un coefficient de température de résistance positive. La résistance électronique des couches PTC à 120 °C est au moins 100 fois supérieure à celle à température ambiante, et le taux de gonflement de la couche PTC par rapport à l'électrolyte non aqueux n'est pas supérieur à 5 %. Des groupes fonctionnels polaires sont présents sur la surface des couches PTC en une quantité à laquelle le rapport S/N, qui est le rapport entre un signal dérivé des groupes fonctionnels polaires mesurés par un spectrophotomètre infrarouge à transformée de Fourier, et un bruit de mesure, est d'au minimum 3,0.
(JA) リチウムイオン二次電池100は、正極集電体と、正極活物質を含む正極合材層とを有する正極11と、負極集電体と、負極活物質を含む負極合材層とを有する負極12と、正極11と負極12との間に位置するセパレータ13と、非水電解液14と、正極合材層と正極集電体との間、および、負極合材層と負極集電体との間の少なくとも一方に設けられ、正の抵抗温度係数を有するPTC層とを備える。PTC層は、120℃における電子抵抗が室温時の電子抵抗の100倍以上であって、かつ、非水電解液に対する膨潤率が5%以下である。また、PTC層の表面には、フーリエ変換赤外分光光度計によって測定される極性官能基由来の信号と測定ノイズの比であるS/N比が3.0以上である量の極性官能基が存在する。
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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 Office (AM, AZ, BY, KG, KZ, RU, TJ, TM)
European Patent Office (EPO) (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)