二次電池

Japanese Patent JP4355947

B2

To provide a lithium secondary battery with excellent characteristics such as energy density and electromotive force, which is also excellent in cycle life and shelf life stability.

This secondary battery comprises a positive electrode, a negative electrode and an electrolyte solution containing an aprotic solvent wherein at least an electrolyte is dissolved. The positive electrode contains a lithium-nickel compound oxide having a layer structure as a positive electrode active material, and the electrolyte solution contains a compound represented by formula (1). In formula (1), R1and R2are each independently an atom or a group selected from a hydrogen atom, a 1-5C substituted or unsubstituted alkyl group, a 1-5C substituted or unsubstituted alkoxy group, a 1-5C substituted or unsubstituted fluoroalkyl group, a 1-5C polyfluoroalkyl group and a halogen atom; and R2and R3are each independently an atom or a group selected from a 1-5C substituted or unsubstituted alkyl group, a 1-5C substituted or unsubstituted alkoxy group, a substituted or unsubstituted phenoxy group, a 1-5C substituted or unsubstituted fluoroalkyl group, a 1-5C polyfluoroalkyl group and a 1-5C substituted or unsubstituted fluoroalkoxy group.

COPYRIGHT: (C)2006,JPO&NCIPI

Kawashima Asako
Tatsuharu Numata
Yuki grassland
Koji Utsuki

JP2004363498A

November 04, 2009

December 15, 2004

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NEC

H01M2/02; H01M4/02; H01M4/505; H01M4/525; H01M10/05; H01M10/052; H01M10/0567; H01M10/0568; H01M10/0569

JP2000133304A
JP2001313071A
JP2003217654A
JP10189041A
JP2000003725A
JP2003308875A
JP2001160417A

WO2004072021A1

Akio Miyazaki
Ishibashi Masayuki
Masaaki Ogata

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