非水系電解液及びリチウム二次電池 - Mitsubishi Chemical Corporation

Title:

非水系電解液及びリチウム二次電池

Document Type and Number:

Japanese Patent JP4670305

Kind Code:

B2

Abstract:

To provide an excellent non-aqueous electrolytic solution in which deterioration of a battery can be suppressed when used at a high voltage, and provide a lithium secondary battery in which by using this non-aqueous electrolytic solution, downsizing and high densification by a high voltage charge and discharge are possible.

In the non-aqueous electrolytic solution which contains an electrolyte, a non-aqueous solvent, and 0.01 to 8 wt% of cyclic carbonate compound having a carbon-carbon unsaturated bond, this is the non-aqueous electrolytic solution which, furthermore, contains 0.01 to 5 wt% of compound represented by the following general formula (I). CFnH(3-n)CH2X... (I), wherein, n is an integer 1 to 3, and X shows either one of the following general formulae (II) to (V). -OR1...(II) -OY-OR2...(III) -OC(=O)R3...(IV) -OC(=O)OR4...(V). Here, R1to R4show alkyl groups in carbon numbers 1 to 20 that may be substituted by a halogen atom, and Y shows a divalent hydrocarbon group of carbon numbers 1 to 10 that may be substituted by the halogen atom.

Inventors:

Yamada Iron Soldier
Takashi Fujii
Shinichi Kinoshita

Application Number:

JP2004301751A

Publication Date:

April 13, 2011

Filing Date:

October 15, 2004

Export Citation:

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Assignee:

Mitsubishi Chemical Corporation

International Classes:

H01M10/0525; H01M10/05; H01M10/052; H01M10/0567; H01M10/0568

Domestic Patent References:

JP8298134A
JP2002343424A

Foreign References:

WO2000016427A1

Attorney, Agent or Firm:

Tsuyoshi Shigeno

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