Phosphorus Compound And Preparation Method Thereof, Electrolyte For Lithium Secondary Battery And Lithium Secondary Battery Including The Same

A phosphorus compound, unsubstituted technology, applied in the field of phosphorus compound, its preparation method, electrolyte for lithium secondary battery and lithium secondary battery, can solve the problems of shortening lifespan and stored energy, reducing, spontaneous internal temperature rise, etc.

Inactive Publication Date: 2014-10-22
SAMSUNG SDI CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Lithium secondary batteries used in electric vehicles and power storage devices may be exposed to high-temperature external environments and spontaneous internal temperature rises due to instantaneous charge and discharge, and thus may have shortened lifespans and storage failures in such high-temperature environments. energy reduction

Method used

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  • Phosphorus Compound And Preparation Method Thereof, Electrolyte For Lithium Secondary Battery And Lithium Secondary Battery Including The Same
  • Phosphorus Compound And Preparation Method Thereof, Electrolyte For Lithium Secondary Battery And Lithium Secondary Battery Including The Same
  • Phosphorus Compound And Preparation Method Thereof, Electrolyte For Lithium Secondary Battery And Lithium Secondary Battery Including The Same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0152] Embodiment 1: Electrolyte for lithium secondary battery

[0153] About 0.5% by weight of a compound represented by the following formula 2 is added as an additive to a mixed organic solvent of about 15% by volume of ethylene carbonate, about 60% by volume of ethyl methyl carbonate, and about 25% by volume of dimethyl carbonate , after which add 1.3M LiPF 6 As a lithium salt to prepare electrolytes for lithium secondary batteries.

[0154] [Formula 2]

[0155]

Embodiment 2

[0156] Embodiment 2: Electrolyte for lithium secondary battery

[0157] An electrolyte for a lithium secondary battery was prepared in the same manner as in Example 1, except that about 0.5% by weight of the compound represented by the following Formula 3 was used as an additive instead of about 0.5% by weight of the compound of Formula 2.

[0158] [Formula 3]

[0159]

Embodiment 3

[0160] Embodiment 3: Electrolyte for lithium secondary battery

[0161] An electrolyte for a lithium secondary battery was prepared in the same manner as in Example 1, except that about 0.5% by weight of a compound represented by the following Formula 4 was used as an additive instead of about 0.5% by weight of the compound of Formula 2.

[0162] [Formula 4]

[0163]

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Abstract

A compound of Formula 1, its use as an electrolyte additive, an electrolyte for lithium secondary batteries including the same, and a lithium secondary battery including such an electrolyte. R 1 , R 2 , R 3 , R 4 , and R 5 in Formula 1 are defined as those specified in the specification.

Description

[0001] Cross References to Related Applications [0002] This application claims priority to and benefit of U.S. Provisional Application No. 61 / 812,638, filed April 16, 2013, in the United States Patent and Trademark Office, the entire contents of which are incorporated herein by reference. technical field [0003] One or more embodiments of the present invention relate to an electrolyte for a lithium secondary battery and a lithium secondary battery including the same. The electrolyte for a lithium secondary battery may improve high rate characteristics, high temperature storage characteristics, and / or lifetime characteristics of the lithium secondary battery. Background technique [0004] Lithium secondary batteries are rechargeable at a high rate and have an energy density per unit weight about three times higher than that of lead storage batteries, nickel-cadmium (Ni-Cd) batteries, nickel-hydrogen batteries, and nickel-zinc batteries, And thus there is increasing resear...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07F9/24H01M10/0567H01M10/0525
CPCH01M10/4235H01M2300/0025C07F9/146H01M2300/004H01M10/0569C07F9/2462H01M10/0568H01M10/052C07F9/1411H01M10/0567C07F9/2408H01M4/131H01M4/1391Y02E60/10
Inventor 郑明焕申又澈金汶成V.埃戈罗夫金秀珍禹明希朴慧珍车始英李敏姝
Owner SAMSUNG SDI CO LTD
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