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1. (WO2019003835) LITHIUM ION SECONDARY CELL
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Pub. No.: WO/2019/003835 International Application No.: PCT/JP2018/021665
Publication Date: 03.01.2019 International Filing Date: 06.06.2018
IPC:
H01M 4/131 (2010.01) ,H01M 10/0525 (2010.01) ,H01M 10/0569 (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
131
Electrodes based on mixed oxides or hydroxides, or on mixtures of oxides or hydroxides, e.g. LiCoOx
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
0525
Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
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
0569
characterised by the solvents
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:
橋爪 優一郎 HASHIZUME, Yuichiro; JP
Agent:
山尾 憲人 YAMAO, Norihito; JP
江間 晴彦 EMA, Haruhiko; JP
Priority Data:
2017-12794029.06.2017JP
Title (EN) LITHIUM ION SECONDARY CELL
(FR) ACCUMULATEUR AU LITHIUM-ION
(JA) リチウムイオン二次電池
Abstract:
(EN) The present invention provides a lithium ion secondary cell that has better rate characteristics even when the charging upper limit voltage becomes a higher voltage up to 4.41 V or greater. The present invention is a lithium ion secondary cell that includes: a positive electrode; a negative electrode; a separator placed between the positive electrode and the negative electrode; and a nonaqueous electrolyte, the charging upper limit voltage being 4.41 V or greater, wherein the positive electrode has a positive electrode active material layer for which the pore tortuosity rate as measured using a mercury porosimeter is 7-60, inclusive.
(FR) La présente invention concerne un accumulateur au lithium-ion qui présente de meilleures caractéristiques de débit même lorsque la tension limite supérieure de charge atteint une tension supérieure ou égale à 4,41 V. L'accumulateur au lithium-ion comprend : une électrode positive ; une électrode négative ; un séparateur placé entre les électrodes positive et négative ; et un électrolyte non aqueux, la tension limite supérieure de charge étant supérieure ou égale à 4,41 V, l'électrode positive comportant une couche de matériau actif d'électrode positive dont le taux de tortuosité des pores mesuré à l'aide d'un porosimètre au mercure est compris entre 7 et 60, inclus.
(JA) 本発明は、充電上限電圧を4.41V以上まで高電圧化する場合であっても、より良好なレート特性を有するリチウムイオン二次電池を提供する。本発明は、正極、負極、該正極と該負極との間に配置されたセパレータ、および非水電解質を含み、充電上限電圧が4.41V以上であるリチウムイオン二次電池であって、前記正極は水銀ポロシメータで測定される細孔曲路率が7以上60以下である正極活物質層を有する、リチウムイオン二次電池に関する。
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, 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)