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Title:
NONAQUEOUS ELECTROLYTE SECONDARY BATTERY
Document Type and Number:
Japanese Patent JP2013038072
Kind Code:
A
Abstract:

To provide a nonaqueous electrolyte secondary battery achieving excellent high-temperature cycle characteristics and inhibiting degradation in low-temperature discharge characteristics in the cycle.

The nonaqueous electrolyte secondary battery comprises a nonaqueous electrolytic solution containing a lithium salt and a nonaqueous solvent in which the lithium salt is dissolved, and a negative electrode and a positive electrode capable of absorbing and desorbing lithium ions. The negative electrode contains a negative electrode active material composed of a carbonaceous material whose surface oxygen concentration O/C, obtained by X-ray photoelectron spectroscopy, is 0.8 atom% or higher, and the nonaqueous electrolytic solution contains a compound having an isocyanate group.


Inventors:
SHIGEMATSU YASUYUKI
ONUKI MASAMICHI
SHIMA KUNIHISA
Application Number:
JP2012155492A
Publication Date:
February 21, 2013
Filing Date:
July 11, 2012
Export Citation:
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Assignee:
MITSUBISHI CHEM CORP
International Classes:
H01M10/0567; H01M4/587; H01M10/052
Domestic Patent References:
JP2008277004A2008-11-13
JP2002222650A2002-08-09
JP2010118330A2010-05-27
JP2006164759A2006-06-22
JP2011014379A2011-01-20
JP2005158671A2005-06-16
JP2008291046A2008-12-04
JP2010251315A2010-11-04
JP2003132889A2003-05-09
JP2008277004A2008-11-13
JP2002222650A2002-08-09
JP2010118330A2010-05-27
JP2006164759A2006-06-22
JP2011014379A2011-01-20
JP2005158671A2005-06-16
JP2008291046A2008-12-04
JP2010251315A2010-11-04
JP2003132889A2003-05-09
Foreign References:
WO2002059040A12002-08-01
WO2013100081A12013-07-04
WO2002059040A12002-08-01
WO2013100081A12013-07-04



 
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