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Nonaqueous electrolyte solution and energy device using same

A technology of non-aqueous electrolyte and energy equipment, which is applied in the direction of non-aqueous electrolyte batteries, non-aqueous electrolytes, electrolytic capacitors, etc., and can solve the problems of high battery capacity, increased battery voltage, insufficient battery impedance characteristics, and insufficient durability.

Pending Publication Date: 2020-10-20
MITSUBISHI CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the impedance characteristics of the battery accompanying these evaluations are insufficient
[0013] In addition, Patent Document 4 discloses that the capacity deterioration and gas generation after high-temperature storage are improved, but the durability against high-temperature continuous charging is insufficient.
[0014] In addition, these patent documents are disclosed as technologies for battery voltage at 4.2V, and have not been studied under the condition of further increasing the battery voltage in order to increase the capacity of the battery.

Method used

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  • Nonaqueous electrolyte solution and energy device using same
  • Nonaqueous electrolyte solution and energy device using same
  • Nonaqueous electrolyte solution and energy device using same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0558] Hereinafter, the present invention will be described more specifically with reference to examples and comparative examples, but the present invention is not limited to these examples.

[0559] The structure of the compound represented by the formula (1) used in this example is shown below.

[0560] [chemical formula 33]

[0561]

[0562] Each substituent of formula (1): R 1 ~R 5 =H, X=S, Y=CH 2 , l=0, m=2, n=1, k=2.

[0563] [chemical formula 34]

[0564]

[0565] Each substituent of formula (1): R 1 ~R 5 =H, X=S, Y=C 4 h 8 , l=0, m=2, n=1, k=2.

[0566] [chemical formula 35]

[0567]

[0568] Each substituent of formula (1): R 1 ~R 5 =H, X=C, Y=none, l=0, m=1, n=1, k=2.

[0569] [chemical formula 36]

[0570]

[0571] (compound (1-4))

[0572] Each substituent of formula (1): R 1 ~R 5 =H, X=C, Y=CH 2 , l=0, m=1, n=1, k=2.

[0573] [chemical formula 37]

[0574]

[0575] Each substituent of formula (1): R 1 ~R 5 =H, X=C, Y=C 2 h 4 ...

Synthetic example 1

[0591]

[0592] In a nitrogen atmosphere, 1.0 g (7.2 mmol) of 2-hydroxy-1,3-propane sultone was fed into a 50 ml three-necked flask, and dissolved in 20 ml of THF. It was cooled to <10° C. using an ice bath, and methanedisulfonyl dichloride 0.76 g (3.5 mmol) / THF 5 ml was added. Next, a solution of 0.81 g (8.0 mmol) of triethylamine / THF 10 ml was slowly added dropwise so that the internal temperature would not exceed 10°C. After stirring at <5°C for 2 hours, 20 ml of water was added, and extracted three times with 20 ml of dichloromethane. The obtained organic layer was concentrated until a white solid was precipitated, and the white solid was collected by filtration under reduced pressure and dried in vacuo. Compound (1-1) 0.38 g was obtained as a white solid, yield: 25.9%.

[0593] 1 H-NMR (DMSO-d6, 400MHz): 6.37(s,2H), 5.94-5.92(m,2H), 4.81-4.77(m,2H), 4.73-4.70(m,2H), 4.06-4.01(m ,2H),3.93-3.89(m,2H).MS(ESI):m / z 414.9(M-H) -

Synthetic example 2

[0595]

[0596] In a nitrogen atmosphere, 2.17 g (15.7 mmol) of 2-hydroxy-1,3-propane sultone was fed into a 100 ml three-necked flask, and dissolved in 30 ml of THF. It was cooled to <10°C using an ice bath and 2.4ml (17.2mmol) of triethylamine was added. A 2.0 g (7.8 mmol) / THF 20 ml solution of 1,4-butanedisulfonyl dichloride was slowly added dropwise thereto, while controlling so that the internal temperature did not exceed 10°C. After the dropwise addition, stirring was carried out at <10° C. for 2 hours. 30 ml of ethyl acetate / 20 ml of water were added thereto and stirred, and the insoluble white solid was collected by filtration under reduced pressure. The filtrate was also concentrated, and the precipitated white solid was collected by filtration under reduced pressure. Combined with the previous white solid to give 1.26 g of solid. This was suspended in 10 ml of methanol, and after suspension washing was performed for 1 hour, a white solid was collected by filtrat...

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Abstract

A nonaqueous electrolyte solution which contains a nonaqueous solvent and a compound represented by formula (1). (In formula (1), each of R1-R5 independently represents a hydrogen atom or an optionally substituted alkyl group having 1-3 carbon atoms; R6 represents an organic group having 1-8 carbon atoms, which optionally has a heteroatom; X represents a carbon atom, a sulfur atom or a phosphorusatom; in cases where X is a carbon atom, l = 0, m = 1 and n = 1; in cases where X is a sulfur atom, l = 0, m = 2 and n = 1; in cases where X is a phosphorus atom, l = 0, m = 1 and n = 2, or alternatively, l = 1, m = 1 and n = 1; k represents an integer of from 2 to 4 (inclusive); and Y represents a direct bond or a linking group having 1-8 carbon atoms, which optionally has a heteroatom, providedthat in cases where Y is a direct bond, there is an X-X bond and k = 2.)

Description

technical field [0001] The invention relates to a nonaqueous electrolytic solution and an energy device using the nonaqueous electrolytic solution. Background technique [0002] With the rapid development of portable electronic devices such as mobile phones and notebook computers, the requirements for high-capacity batteries used for their main power supply and backup power supply are getting higher and higher. Lithium batteries with higher energy density than nickel-cadmium batteries and nickel-metal hydride batteries Energy devices such as ion secondary batteries have attracted attention. [0003] The components constituting a lithium secondary battery can be mainly divided into a positive electrode, a negative electrode, a separator, and an electrolyte. Among these components, the electrolyte usually uses LiPF 6 、LiBF 4 , LiClO 4 、LiCF 3 SO 3 , LiAsF 6 , LiN(CF 3 SO 2 ) 2 、LiCF 3 (CF 2 ) 3 SO 3 Dissolve in cyclic carbonates such as ethylene carbonate and pro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M10/0567C07D327/04H01G11/06H01G11/64H01M10/052
CPCH01M10/0567H01G11/06C07D327/04H01G11/64Y02E60/10H01M2300/0025H01G11/60H01G11/50H01M10/0525H01M10/4235H01M4/525H01M4/587H01M2220/20Y02T10/70C07D411/12H01M4/366H01M4/48H01M4/583H01M10/0568H01M10/0569H01M2004/027H01M2004/028H01M2300/0028
Inventor 川上大辅
Owner MITSUBISHI CHEM CORP
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