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Pub. No.:    WO/2016/088837    International Application No.:    PCT/JP2015/084027
Publication Date: 09.06.2016 International Filing Date: 03.12.2015
H01M 4/13 (2010.01), H01M 4/134 (2010.01), H01M 4/38 (2006.01), H01M 4/48 (2010.01), H01M 4/505 (2010.01), H01M 4/525 (2010.01), H01M 4/58 (2010.01), H01M 10/052 (2010.01), H01M 10/0567 (2010.01), H01M 10/0569 (2010.01), H01M 10/058 (2010.01)
Applicants: NEC CORPORATION [JP/JP]; 7-1, Shiba 5-chome, Minato-ku, Tokyo 1088001 (JP)
Inventors: TAKAHASHI, Makiko; (JP).
NOGUCHI, Takehiro; (JP).
KATOU, Yuukou; (JP)
Agent: ITO, Katsuhiro; (JP)
Priority Data:
2014-246181 04.12.2014 JP
(JA) リチウム二次電池
Abstract: front page image
(EN)Provided is a lithium secondary battery having excellent high-temperature cycle characteristics, which comprises a positive electrode that is capable of absorbing and desorbing lithium, a negative electrode, and an electrolyte solution that contains a nonaqueous electrolyte solvent. This lithium secondary battery is characterized in that: a negative electrode active material contains a compound containing elemental silicon; and the surface of the negative electrode contains a phosphorus compound having a cyclic phosphoric acid ester structure wherein -O-P-O- constitutes a part of the ring structure.
(FR)L'invention concerne une batterie rechargeable au lithium présentant d'excellentes caractéristiques de cycle à haute température, qui comprend une électrode positive qui peut absorber et désorber le lithium, une électrode négative, et une solution électrolytique qui contient un solvant d'électrolyte non aqueux. Cette batterie rechargeable au lithium est caractérisée en ce que : un matériau actif d'électrode négative contient un composé contenant du silicium élémentaire; et la surface de l'électrode négative contient un composé phosphoré ayant une structure d'ester d'acide phosphorique cyclique dans laquelle -O-P-O- constitue une partie de la structure cyclique.
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, 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, 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 (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)