Title:
LITHIUM TITANATE PARTICULATE POWDER AND PRODUCTION METHOD FOR SAME, MG-CONTAINING LITHIUM TITANATE PARTICULATE POWDER AND PRODUCTION METHOD FOR SAME, NEGATIVE ELECTRODE ACTIVE MATERIAL PARTICULATE POWDER FOR NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY, AND NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY
Document Type and Number:
WIPO Patent Application WO/2012/029697
Kind Code:
A1
Abstract:
Provided are a lithium titanate particulate powder that displays excellent initial discharge capacity and a high discharge capacity maintenance rate as an active substance for a non-aqueous electrolyte secondary battery as well as having reduced gas emissions, a production method for same, and a Mg-containing lithium titanate powder. The present invention includes: a lithium titanate particulate powder with a spinel structure, wherein, when an index is applied by Fd-3m in XRD, the TiO2 volume by Reitveld analysis is 1.5% or less and the Li2TiO3 volume is 1%-6%, the Li4Ti5O12 volume is 94%-99%, and the BET specific surface area is 7-15m2/g; and a Mg-containing lithium titanate particulate powder with a composition indicated by LixMgyTizO4 (wherein x, z>0, 0.01≦y≦0.20, 0.01≦y/z≦0.10, and 0.5≦(x+y)/z≦1.0), a BET specific surface area of 5-50m2/g, a single-phase spinel type crystal structure, and a lattice constant (a) with a value indicated by 0.050y+8.3595
Inventors:
YAMAMOTO AKINORI (JP)
OKITA TOMOKO (JP)
YAMAMOTO HIROSHI (JP)
MORI KOHJI (JP)
KOGA KAZUMICHI (JP)
KAJIYAMA AKIHISA (JP)
OKITA TOMOKO (JP)
YAMAMOTO HIROSHI (JP)
MORI KOHJI (JP)
KOGA KAZUMICHI (JP)
KAJIYAMA AKIHISA (JP)
Application Number:
PCT/JP2011/069407
Publication Date:
March 08, 2012
Filing Date:
August 29, 2011
Export Citation:
Assignee:
TODA KOGYO CORP (JP)
YAMAMOTO AKINORI (JP)
OKITA TOMOKO (JP)
YAMAMOTO HIROSHI (JP)
MORI KOHJI (JP)
KOGA KAZUMICHI (JP)
KAJIYAMA AKIHISA (JP)
YAMAMOTO AKINORI (JP)
OKITA TOMOKO (JP)
YAMAMOTO HIROSHI (JP)
MORI KOHJI (JP)
KOGA KAZUMICHI (JP)
KAJIYAMA AKIHISA (JP)
International Classes:
C01G23/00; H01M4/36; H01M4/485
Domestic Patent References:
WO2009146904A1 | 2009-12-10 | |||
WO2006106701A1 | 2006-10-12 | |||
WO2006106701A1 | 2006-10-12 |
Foreign References:
JP2009081049A | 2009-04-16 | |||
JP2011154928A | 2011-08-11 | |||
JP2001192208A | 2001-07-17 | |||
JP2001213622A | 2001-08-07 | |||
JPH09309727A | 1997-12-02 | |||
JP2010228980A | 2010-10-14 | |||
JP2006318797A | 2006-11-24 | |||
JP2003137547A | 2003-05-14 | |||
JPH11283624A | 1999-10-15 | |||
JPH06275263A | 1994-09-30 | |||
JP2001240498A | 2001-09-04 | |||
JP2005239460A | 2005-09-08 | |||
JP2005239461A | 2005-09-08 | |||
JP2001185141A | 2001-07-06 | |||
JP2001250554A | 2001-09-14 | |||
JP2000156229A | 2000-06-06 | |||
JP2004235144A | 2004-08-19 | |||
JPH10251020A | 1998-09-22 |
Other References:
See also references of EP 2612840A4
Attorney, Agent or Firm:
OKADA, KAZUHIKO (JP)
Kazuhiko Okada (JP)
Kazuhiko Okada (JP)
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Claims:
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