Title:
PROCESS FOR PRODUCING LITHIUM BORATE COMPOUND
Document Type and Number:
WIPO Patent Application WO/2010/104137
Kind Code:
A1
Abstract:
A process for producing, by a relatively simple means, a lithium borate material which is useful as a positive-electrode material for lithium-ion secondary batteries, etc. and has improved cycle characteristics, capacity, etc., and excellent performances. The process is characterized by reacting one or more divalent-metal compounds comprising at least one compound selected from a group consisting of compounds of divalent iron and compounds of divalent manganese with boric acid and lithium hydroxide in a reducing atmosphere at 400-650ºC in the melt of a carbonate mixture comprising lithium carbonate and at least one alkali metal carbonate selected from a group consisting of potassium carbonate, sodium carbonate, rubidium carbonate, and cesium carbonate.
Inventors:
KOJIMA TOSHIKATSU (JP)
SAKAI TETSUO (JP)
MIYUKI TAKUHIRO (JP)
KOJIMA AKIRA (JP)
NIWA JUNICHI (JP)
MURASE HITOTOSHI (JP)
SAKAI TETSUO (JP)
MIYUKI TAKUHIRO (JP)
KOJIMA AKIRA (JP)
NIWA JUNICHI (JP)
MURASE HITOTOSHI (JP)
Application Number:
PCT/JP2010/054075
Publication Date:
September 16, 2010
Filing Date:
March 04, 2010
Export Citation:
Assignee:
NAT INST OF ADVANCED IND SCIEN (JP)
TOYOTA JIDOSHOKKI KK (JP)
KOJIMA TOSHIKATSU (JP)
SAKAI TETSUO (JP)
MIYUKI TAKUHIRO (JP)
KOJIMA AKIRA (JP)
NIWA JUNICHI (JP)
MURASE HITOTOSHI (JP)
TOYOTA JIDOSHOKKI KK (JP)
KOJIMA TOSHIKATSU (JP)
SAKAI TETSUO (JP)
MIYUKI TAKUHIRO (JP)
KOJIMA AKIRA (JP)
NIWA JUNICHI (JP)
MURASE HITOTOSHI (JP)
International Classes:
C01B35/12; H01M4/36; H01M4/58
Foreign References:
| JP2005183088A | 2005-07-07 | |||
| JP2004207051A | 2004-07-22 | |||
| JP2005112711A | 2005-04-28 | |||
| JPH10241682A | 1998-09-11 | |||
| JP2001064020A | 2001-03-13 | |||
| JP2001048545A | 2001-02-20 |
Other References:
Y.Z.DONG ET AL.: "The structure and electrochemical performance of LiFeB03 as a novel Li-battery cathode material", ELECTROCHIMICA ACTA, vol. 53, 2008, pages 2339 - 2345, XP002606643
Y.Z.DONG ET AL.: "Phase relations of Li20-FeO-B203 ternary system and elecrtochemical properties of LiFeB03 compound", JOURNAL OF ALLOYS AND COMPOUNDS, vol. 461, 2008, pages 585 - 590, XP022708776
V.LEGAGNEUR ET AL.: "LiMB03(M=Mn, Fe, Co): synthesis, crystal structure and lithium deinsertion/insertion properties", SOLID STATE IONICS, vol. 139, 2001, pages 37 - 46, XP055109920
Y.Z.DONG ET AL.: "Phase relations of Li20-FeO-B203 ternary system and elecrtochemical properties of LiFeB03 compound", JOURNAL OF ALLOYS AND COMPOUNDS, vol. 461, 2008, pages 585 - 590, XP022708776
V.LEGAGNEUR ET AL.: "LiMB03(M=Mn, Fe, Co): synthesis, crystal structure and lithium deinsertion/insertion properties", SOLID STATE IONICS, vol. 139, 2001, pages 37 - 46, XP055109920
Attorney, Agent or Firm:
OHKAWA, HIROSHI (JP)
Hiroshi Okawa (JP)
Hiroshi Okawa (JP)
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