WIPO logo
Mobile | Deutsch | Español | Français | 日本語 | 한국어 | Português | Русский | 中文 | العربية |
PATENTSCOPE

Search International and National Patent Collections
World Intellectual Property Organization
Options
Query Language
Stem
Sort by:
List Length
Latest bibliographic data on file with the International Bureau    Submit observation

Pub. No.: WO/2017/056423 International Application No.: PCT/JP2016/004185
Publication Date: 06.04.2017 International Filing Date: 14.09.2016
IPC:
H01M 4/485 (2010.01) ,H01M 4/36 (2006.01)
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
36
Selection of substances as active materials, active masses, active liquids
48
of inorganic oxides or hydroxides
485
of mixed oxides or hydroxides for inserting or intercalating light metals, e.g. LiTi2O4 or LiTi2OxFy
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
Applicants: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.[JP/JP]; 1-61, Shiromi 2-chome, Chuo-ku, Osaka-shi, Osaka 5406207, JP
Inventors: KAWAKITA, Akihiro; --
OGASAWARA, Takeshi; --
JITO, Daizo; --
Agent: KAMATA, Kenji; JP
MAEDA, Hiroo; JP
Priority Data:
2015-19184729.09.2015JP
Title (EN) NONAQUEOUS ELECTROLYTE SECONDARY BATTERY
(FR) PILE RECHARGEABLE À ÉLECTROLYTE NON AQUEUX
(JA) 非水電解質二次電池
Abstract:
(EN) The purpose of the present invention is to provide a nonaqueous electrolyte secondary battery which has higher output characteristics than conventional nonaqueous electrolyte secondary batteries even after storage at high temperatures in a charged state. The present invention is a nonaqueous electrolyte secondary battery which is provided with a positive electrode, a negative electrode and a nonaqueous electrolyte, and wherein: an active material of the positive electrode comprises secondary particles, each of which is composed of aggregated primary particles that are formed of a lithium-containing transition metal oxide; each secondary particle has a surface layer region in which Mg is unevenly distributed and solid-solved; and a W compound adheres to the surfaces of the secondary particles and/or to the surfaces of the primary particles.
(FR) L'objectif de la présente invention est de pourvoir à une pile rechargeable à électrolyte non aqueux qui présente des caractéristiques de sortie plus élevée que des piles rechargeables à électrolyte non aqueux classiques même après stockage à des températures élevées dans un état chargé. La présente invention porte sur une pile rechargeable à électrolyte non aqueux qui est pourvue d'une électrode positive, d'une électrode négative et d'un électrolyte non aqueux, et dans laquelle : un matériau actif de l'électrode positive comprend des particules secondaires, dont chacune est composée de particules primaires agrégées qui sont constituées d'un oxyde de métal de transition contenant du lithium ; chaque particule secondaire comporte une région de couche superficielle dans laquelle du magnésium (Mg) est distribué d'une manière non uniforme et en solution solide ; et un composé de tungstène (W) adhère aux surfaces des particules secondaires et/ou aux surfaces des particules primaires.
(JA) 本発明の目的は、高温充電保存後においても、従来以上に高出力特性を有する非水電解質二次電池を提供することにある。 本発明は、正極と、負極と、非水電解質とを備えた非水電解質二次電池であって、正極の活物質は、リチウム含有遷移金属酸化物からなる一次粒子が凝集して形成された二次粒子を有し、二次粒子はMgが偏在して固溶する表層領域を有し、かつ、二次粒子の表面及び一次粒子の表面の少なくとも一方にW化合物が付着している。
front page image
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, 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)