(19)
(11) EP 3 141 527 A8

(12) CORRECTED EUROPEAN PATENT APPLICATION
Note: Bibliography reflects the latest situation

(15) Correction information:
Corrected version no 1 (W1 A1)

(48) Corrigendum issued on:
10.05.2017 Bulletin 2017/19

(43) Date of publication:
15.03.2017 Bulletin 2017/11

(21) Application number: 16187789.9

(22) Date of filing: 08.09.2016
(51) International Patent Classification (IPC): 
C01G 23/00(2006.01)
 C01G 33/00(2006.01)
(84) Designated Contracting States:
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated Extension States:
BA ME
Designated Validation States:
MA MD

(30) Priority: 14.09.2015 JP 2015180367

(71) Applicant: Kabushiki Kaisha Toshiba
Minato-ku, Tokyo 105-8001 (JP)

(72) Inventors:
  • Harada, Yasuhiro
    Tokyo, 105-8001 (JP)
  • Takami, Norio
    Tokyo, 105-8001 (JP)

(74) Representative: Hoffmann Eitle 
Patent- und Rechtsanwälte PartmbB Arabellastraße 30
81925 München
81925 München (DE)

   


(54) ACTIVE MATERIAL, NONAQUEOUS ELECTROLYTE BATTERY, BATTERY PACK, AND VEHICLE


(57) According to one embodiment, an active material including a monoclinic niobium-titanium composite oxide is provided. In the active material, a portion of niobium (Nb) or titanium (Ti) as a constituent element of Nb2TiO7 is substituted by an element. Here, the substitution of Nb or Ti satisfies any one of following formulas (1) to (3):

         Ti (IV) → 0.75M(V) + 0.25M(I)     (1)

         Ti (IV) → 0.6M(VI) + 0.4M(I)     (2)

         Nb (V) → 0.8M(VI) + 0.2M(I)     (3),

where M(VI) is at least one of Mo and W, M(V) is at least one of Nb, Ta, and V, and M(I) is at least one of Na, K, Rb, and Cs.