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Ionic liquid and plastic crystal

An ionic liquid and viscous technology, which is applied in the direction of structural parts, active material electrodes, electrochemical generators, etc., can solve problems such as stability problems, achieve good storage efficiency, suppress the need for cooling, and achieve high efficiency.

Active Publication Date: 2017-05-24
NAT INST OF ADVANCED IND SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Organic solvent electrolytes currently used as electrolytes for lithium secondary batteries can operate at low temperatures, but there are problems in stability at high temperatures because volatile or flammable organic solvents are used as electrolyte solutions

Method used

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  • Ionic liquid and plastic crystal
  • Ionic liquid and plastic crystal
  • Ionic liquid and plastic crystal

Examples

Experimental program
Comparison scheme
Effect test

manufacture example 1

[0082] Production Example 1: Anion (f 3 C) Synthesis

[0083] As a commercially available product, 58.4 mg of compound (2) obtained from ALCATRAZ CHEMICALS (Gujarat, INDIA) and 194 mg of SF 4 The reaction gave 51.6 mg of compound (3). 92.4 mg of compound (3) was reacted with excess potassium carbonate and introduced into 93.9 mg of f 3 Potassium salt of C anion (4).

Embodiment 1

[0085] Make the f obtained in Manufacturing Example 1 3 Potassium salt of C anion (4) with equimolar [EMI] + 、[DEME] + 、[Py 13 ] + or [PP 13 ] + The bromide reacts and carries out cation exchange, thus obtains the ionic liquid of the present invention ([EMI][f 3 C]) or viscous crystals ([DEME][f 3 C], [Py 13 ][f 3 C] or [PP 13 ][f 3 C]).

[0086] The physical property values ​​of the obtained ionic liquids or viscous crystals are shown below. In addition, the melting point, glass transition temperature, and solid-solid phase transition temperature are shown in Table 1.

[0087] 1)[EMI][f 3 C]

[0088] 1 H-NMR (CD 3 CN,300MHz):δ=1.45(t,J=7.2Hz,3H),3.81(s,3H),4.16(q,J=7.2Hz,2H),7.32(s,1H),7.37(s,1H ),8.39(s,1H): 19 F-NMR (CD 3 CN,283MHz):δ=71.5(s,3F).

[0089] Elemental analysis measured value (theoretical value): H 2.99% (2.98%); C 22.71% (22.58%); N 7.58% (7.52%); F 15.36% (15.31%). The ion conductivity at 25°C: 6.2 mS cm -1 .Viscosity at 25°C: 39mPa.s.De...

Embodiment 2

[0100] Make the f obtained in Manufacturing Example 1 3 Potassium salt of C anion (4) and equimolar [N 6111 ] + , [N 6222 ] + , [N 1111 ] + , [N 2222 ] + 、[Py 12 ] + , [C 4 mim] + , [C 6 mim] + The bromide reacts and carries out cation exchange, thus obtains the [N of the ionic liquid of the present invention as the target 6111 ][f 3 C], [N 6222 ] + [f 3 C], [N 1111 ][f 3 C], [N 2222 ][f 3 C], [PP 14 ][f 3 C], [Py 12 ][f 3 C], [Py 14 ][f 3 C], [C 1 mim][f 3 C], [C 4 mim][f 3 C], [C 6 mim][f 3 C]. The physical property values ​​of the obtained ionic liquids or viscous crystals are shown below. In addition, the melting point, glass transition temperature, and solid-solid phase transition temperature are shown in Table 1.

[0101] 1)[N 1111 ][f 3 C],

[0102] 1 H NMR (DMSO-d6, 300MHz): δ=3.06(s, 12H); 19 F NMR (DMSO-d6, 283MHz): δ = 71.9 (s, 3F). Thermal decomposition temperature (when reduced by 10%): 348°C.

[0103] 2)[N 2222 ][f 3 C],...

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Abstract

The present invention provides an ionic liquid or plastic crystal comprising anions and cations, said anions including [C(SO2F)3]- and said cations including at least one type selected from the group consisting of 1-ethyl-3-methylimidazolium ([EMI]+), N,N-diethyl-N-methyl-(2-methoxyethyl ) ammonium ([DEME]+), N-methyl-N-propylpyrrolidinium ([Py13]+), N-methyl-N-propylpiperidinium ([PP13]+), tetramethylammonium ([N1111]+), tetraethylammonium ([N2222]+), triimethyl hexyl ammonium ([N6111]+), triethylhexylammonium ([N6222]+), N-methyl-N-ethylpyrrolidinium ([Py12]+), 1-butyl-3-methylimidazolium ([C4mim]+), and 1-hexyl-3-methylimidazolium ([C6mim]+).

Description

technical field [0001] The invention relates to an ionic liquid or soft viscous crystal. The invention also relates to a non-aqueous electrolyte for a lithium secondary battery and the lithium secondary battery. Background technique [0002] In lithium secondary batteries, use at low temperatures is emphasized, and the use of ionic liquids as electrolytes has been proposed (Patent Document 1). On the other hand, the popularization of photovoltaic power generation and combined heat and power systems, etc., and the power generation systems that can be used in disasters such as the Great East Japan Earthquake have increased the demand for storage-type lithium secondary batteries including vehicles. Lithium secondary batteries using organic solvents that have already been put into practical use generate heat during charge and discharge, and therefore, safety measures must be taken so that the temperature does not reach a high temperature. In particular, recently, the demand fo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C309/80C07C217/08C07D207/04C07D233/58C07D295/02H01M10/052H01M10/0568
CPCC07D233/58C07C309/80C07C217/08H01M10/052C07C211/63C07D295/037H01M10/0568Y02E60/10C07D207/04C07D295/02H01M4/13H01M10/056H01M10/0561H01M10/0566H01M2004/026H01M2004/027H01M2004/028
Inventor 松本一水门润治王鹏程
Owner NAT INST OF ADVANCED IND SCI & TECH
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