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Title:
ACTIVE MATERIAL FOR SECONDARY BATTERIES, ELECTRODE FOR SECONDARY BATTERIES, SECONDARY BATTERY, BATTERY PACK, ELECTRIC VEHICLE, ELECTRICAL ENERGY STORAGE SYSTEM, ELECTRIC TOOL, AND ELECTRONIC DEVICE
Document Type and Number:
WIPO Patent Application WO/2014/112420
Kind Code:
A1
Abstract:
This secondary battery is provided with a positive electrode, a negative electrode and an electrolyte solution; and the positive electrode contains an active material that is capable of absorbing and desorbing an electrode reactive substance. The ratio of the intensity (IS) of a peak assigned to SO2 - to the intensity (IF) of a peak assigned to LiF2 -, namely IS/IF as obtained by a negative ion analysis of the active material using time-of-flight secondary ion mass spectrometry is 0.04 or more. Since a secondary battery according to the present invention has an intensity ratio IS/IF of 0.04 or more as obtained by a negative ion analysis of the active material using time-of-flight secondary ion mass spectrometry, the secondary battery is able to achieve excellent battery characteristics.

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JP3691279POSITIVE ACTIVE MATERIAL FOR LITHIUM SECONDARY BATTERY AND PRODUCTION OF THE SAME
Inventors:
MISAWA MASAKI (JP)
ODANI TORU (JP)
NISHI TOSHIO (JP)
Application Number:
PCT/JP2014/050188
Publication Date:
July 24, 2014
Filing Date:
January 09, 2014
Export Citation:
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Assignee:
SONY CORP (JP)
International Classes:
H01M4/36; H01M4/525; H01M10/052; H01M10/0566; H01M10/058
Foreign References:
JP2009176719A2009-08-06
JPH08236114A1996-09-13
JP2013008586A2013-01-10
JP3172388B22001-06-04
JP3691279B22005-09-07
JP2002100357A2002-04-05
JP2004165151A2004-06-10
JP2010129449A2010-06-10
JP2007522616A2007-08-09
JPH10289733A1998-10-27
JP2002352864A2002-12-06
JP2011513924A2011-04-28
JP2010225498A2010-10-07
JP2010245017A2010-10-28
JP2011150958A2011-08-04
JP2006294375A2006-10-26
Other References:
See also references of EP 2947712A4
Attorney, Agent or Firm:
TSUBASA PATENT PROFESSIONAL CORPORATION (JP)
Patent business corporation wings international patent firm (JP)
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