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Organic electrolytic solution comprising glycidyl ether compund and lithium battery employing the same

An organic electrolyte and glycidyl ether technology, applied in the field of lithium batteries, can solve the problems of increasing the degradation of active materials

Inactive Publication Date: 2009-02-04
SAMSUNG SDI CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In particular, if the active material includes a metal such as silicon, a large change in the volume of the active material increases the degradation of the active material

Method used

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  • Organic electrolytic solution comprising glycidyl ether compund and lithium battery employing the same
  • Organic electrolytic solution comprising glycidyl ether compund and lithium battery employing the same
  • Organic electrolytic solution comprising glycidyl ether compund and lithium battery employing the same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0097] Embodiment 1: the preparation of electrolyte

[0098] 5% by weight of the glycidyl ether compound represented by formula 4 was added as an additive to an organic solvent containing propylene carbonate, and 1M LiClO 4 Used as lithium salt to prepare organic electrolyte.

[0099] Formula 4

[0100]

Embodiment 2

[0101] Embodiment 2: the preparation of electrolyte

[0102] An organic electrolytic solution was prepared in the same manner as in Example 1, except that the compound represented by Formula 5 was used instead of the compound represented by Formula 4.

[0103] Formula 5

[0104]

Embodiment 3

[0105] Embodiment 3: the preparation of electrolyte

[0106] An organic electrolytic solution was prepared in the same manner as in Example 1, except that the compound represented by Formula 6 was used instead of the compound represented by Formula 4.

[0107] Formula 6

[0108]

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PUM

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Abstract

An organic electrolytic solution includes lithium salt; an organic solvent containing a high dielectric constant solvent and / or a low boiling point solvent; and a glycidyl ether compound represented by Formula 1: where, n, R1, R2, R3, R4, R5, R6 and A are described in the detailed description. In conventional organic electrolytic solutions, irreversible capacity is increased due to decomposition of a polar solvent. A lithium battery employing the organic electrolytic solution has excellent charge / discharge characteristics by inhibiting cracks of a negative electrode active material which occur during charging and discharging of the battery. Therefore, the lithium battery can have high stability, reliability and charge / discharge efficiency.

Description

technical field [0001] Aspects of the present invention relate to an organic electrolytic solution including a glycidyl ether compound and a lithium battery using the same. More particularly, aspects of the present invention relate to an organic electrolytic solution including glycidyl ether capable of effectively suppressing side reactions and a lithium battery capable of improving battery charging / discharging characteristics by using the organic electrolytic solution. Background technique [0002] As portable electronic devices such as video cameras, cellular phones, notebook computers, etc. become lighter and have increasingly improved performance, research on batteries used as power sources for such portable electronic devices is ongoing. In particular, since rechargeable lithium secondary batteries have three times the energy density per unit weight of conventional lead storage batteries, nickel-cadmium batteries, nickel-hydrogen batteries, nickel-zinc batteries, etc., ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M10/40H01M6/16H01M10/052H01M10/0567H01M10/0568H01M10/0569
CPCY02E60/12Y02E60/122H01M10/0569Y02E60/10H01M10/08
Inventor 李锡守柳永均李东埈
Owner SAMSUNG SDI CO LTD
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