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Electrolyte solution for lithium-ion capacitor and lithium-ion capacitor including the same

An electrolytic solution and capacitor technology, applied in the direction of hybrid capacitor electrolyte, capacitor electrolyte/absorbent, capacitor, etc., can solve the problems of gas generation, reliability and performance degradation, etc.

Inactive Publication Date: 2012-11-21
SAMSUNG ELECTRO MECHANICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] However, when an electrolytic solution for a secondary battery is applied as it is to a lithium ion capacitor according to the related art, since the carbon material used as an electrode material continuously reacts with the electrolytic solution, gas may be generated, and reliability and performance may deteriorate. reduce

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 2）

[0045] (Example 2) Fluoroethylene carbonate (FEC), 5wt%

Embodiment 3）

[0046] (Example 3) propane sultone (PS), 10wt%

Embodiment 4）

[0047] (Example 4) propene sultone (PST), 5wt%

[0048] For each example, after measuring the initial resistance (initial resistance, Ω) and capacity retention (capacity retention, %) at 25° and -40°, the results in the following table were obtained.

[0049] 【Table 1】

[0050] The result of measuring product characteristics according to the type of additive

[0051] group

Control 1

Example 1

Example 2

Example 3

Example 4

Additives

not added

CC

FEC

P.S.

PST

Initial resistance (Ω)

0.35

0.55

0.44

0.35

0.66

Capacitance retention (%)

72

90

91

92

82

[0052] It can be concluded from the above Table 1 that, compared with the control (group) 1, according to the lithium ion capacitors of Examples 1 to 4, the initial resistance is slightly increased, while the capacitance retention rate (capacity retention rate) is significantly improved.

[0053] I...

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PUM

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Abstract

Disclosed herein are an electrolyte solution composition and an energy storage device including the same. The electrolyte solution may include: a solvent including one or more compound selected from one or more cyclic carbonate compound; and additives including one or more selected from a group consisting of catechol carbonate (CC), fluoro ethylene carbonate (FEC), propane sulton (PS), and propene sulton (PST).

Description

[0001] References to related applications [0002] This application claims the benefit of Korean Patent Application No. 10-2011-0047905, filed May 20, 2011, entitled "Electrolyte Solution for Lithium Ion Capacitor and Lithium Ion Capacitor Containing The Same", the entire contents of which are incorporated by reference incorporated into this application. technical field [0003] The present invention relates to an electrolyte solution (electrolyte solution, electrolyte solution) composition and an energy storage device (energy storage device, energy storage device) containing it. Background technique [0004] The stable supply of energy has been an important factor in various electronic products such as information communication devices. Typically, this function is performed by a capacitor. In other words, capacitors play the role of storing and supplying electricity in the circuits of information communication devices and various electronic products to stabilize the curre...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01G9/035H01G11/54H01G11/06H01G11/22H01G11/24H01G11/30H01G11/32H01G11/42H01G11/60H01G11/62H01G11/64
CPCH01G9/035H01G11/64H01G11/62Y02E60/13H01G11/60H01G11/06H01G9/022
Inventor 李相均闵泓锡金倍均赵智星
Owner SAMSUNG ELECTRO MECHANICS CO LTD