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1. (WO2013054457) LITHIUM SILICATE COMPOUND, POSITIVE ELECTRODE ACTIVE MATERIAL FOR LITHIUM ION SECONDARY BATTERIES, AND LITHIUM ION SECONDARY BATTERY USING SAME
Latest bibliographic data on file with the International Bureau   

Pub. No.:    WO/2013/054457    International Application No.:    PCT/JP2012/004768
Publication Date: 18.04.2013 International Filing Date: 26.07.2012
IPC:
C01B 33/32 (2006.01), C01B 33/12 (2006.01), H01M 4/58 (2010.01)
Applicants: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI [JP/JP]; 2-1, Toyoda-cho, Kariya-shi, Aichi 4488671 (JP) (For All Designated States Except US).
NATIONAL INSTITUTE OF ADVANCED INDUSTRIAL SCIENCE AND TECHNOLOGY [JP/JP]; 3-1, Kasumigaseki 1-chome, Chiyoda-ku, Tokyo 1008921 (JP) (For All Designated States Except US).
KOJIMA, Akira [JP/JP]; (JP) (For US Only).
KOJIMA, Toshikatsu [JP/JP]; (JP) (For US Only).
TABUCHI, Mitsuharu [JP/JP]; (JP) (For US Only).
SAKAI, Tetsuo [JP/JP]; (JP) (For US Only).
MORISHITA, Masanori [JP/JP]; (JP) (For US Only).
MIYUKI, Takuhiro [JP/JP]; (JP) (For US Only).
NIWA, Junichi [JP/JP]; (JP) (For US Only).
NAKANISHI, Masataka [JP/JP]; (JP) (For US Only).
SATO, Yuya [JP/JP]; (JP) (For US Only).
KAWASUMI, Kazuhito [JP/JP]; (JP) (For US Only).
MURASE, Masakazu [JP/JP]; (JP) (For US Only)
Inventors: KOJIMA, Akira; (JP).
KOJIMA, Toshikatsu; (JP).
TABUCHI, Mitsuharu; (JP).
SAKAI, Tetsuo; (JP).
MORISHITA, Masanori; (JP).
MIYUKI, Takuhiro; (JP).
NIWA, Junichi; (JP).
NAKANISHI, Masataka; (JP).
SATO, Yuya; (JP).
KAWASUMI, Kazuhito; (JP).
MURASE, Masakazu; (JP)
Agent: OHKAWA, Hiroshi; 2-5, Meieki 3-chome, Nakamura-ku, Nagoya-shi, Aichi 4500002 (JP)
Priority Data:
2011-226737 14.10.2011 JP
Title (EN) LITHIUM SILICATE COMPOUND, POSITIVE ELECTRODE ACTIVE MATERIAL FOR LITHIUM ION SECONDARY BATTERIES, AND LITHIUM ION SECONDARY BATTERY USING SAME
(FR) COMPOSÉ DE SILICATE DE LITHIUM, MATIÈRE ACTIVE D'ÉLECTRODE POSITIVE POUR DES BATTERIES SECONDAIRES LITHIUM-ION ET BATTERIE SECONDAIRE LITHIUM-ION L'UTILISANT
(JA) リチウムシリケート系化合物とリチウムイオン二次電池用正極活物質及びこれを用いたリチウムイオン二次電池
Abstract: front page image
(EN)Provided is a novel lithium silicate material which is useful as a positive electrode material for lithium ion secondary batteries. A lithium silicate compound represented by Li1.5FeSiO4.25. A lithium silicate compound which is composed of lithium (Li), iron (Fe), silicon (Si) and oxygen (O) and is characterized by being represented by the following composition formula: Li1+2δFeSiO4+δ-C (wherein -0.25 ≤ δ ≤ 0.25 and 0 ≤ C ≤ 0.5). Since iron (Fe) can be present in a trivalent form, this lithium silicate compound has more excellent chemical stability in comparison to Li2FeSiO4.
(FR)L'invention concerne une nouvelle matière de silicate de lithium qui est utile comme matière d'électrode positive pour des batteries secondaires lithium-ion. L'invention concerne un composé de silicate de lithium représenté par Li1,5FeSiO4,25. L'invention concerne un composé de silicate de lithium qui est composé de lithium (Li), de fer (Fe), de silicium (Si) et d'oxygène (O) et qui est caractérisé comme étant représenté par la formule de composition suivante : Li1+2äFeSiO4+ن-C (dans laquelle -0,25 ≤ ن ≤ 0,25 et 0 ≤ C ≤ 0,5). Étant donné que le fer (Fe) peut être présent sous une forme trivalente, ce composé de silicate de lithium a une stabilité chimique bien plus excellente par comparaison avec Li2FeSiO4.
(JA) リチウムイオン二次電池用正極材料として有用であり、新規なリチウムシリケート系材料を提供する。 Li1.5FeSiO4.25で表されるリチウムシリケート系化合物。リチウム(Li)と、鉄(Fe)と、シリコン(Si)と、酸素(O)とからなるリチウムシリケート系化合物であり、組成式:Li1+2δFeSiO4+δ-C(-0.25≦δ≦0.25、0≦C≦0.5)で表されることを特徴とするリチウムシリケート系化合物。鉄(Fe)が三価に存在できるので、LiFeSiOに比べて化学的安定性に優れている。
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, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IS, KE, KG, KM, KN, KP, KR, KZ, LA, LC, LK, LR, LS, LT, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, 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, 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, ML, MR, NE, SN, TD, TG).
Publication Language: Japanese (JA)
Filing Language: Japanese (JA)