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Binary or ternary fluorine-containing sulfimide alkali metal salt and ionic liquid and applications thereof

A technology of fluorosulfonimide base and fluorosulfonimide, which is applied in the field of preparation of alkali metal salts and ionic liquids

Inactive Publication Date: 2012-11-21
HUAZHONG UNIV OF SCI & TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] So far, the preparation of alkali metal salts (especially lithium salts) and ionic liquids of binary fluorine-containing sulfonimides, and their application as electrolyte materials in lithium-ion batteries have not been reported.

Method used

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  • Binary or ternary fluorine-containing sulfimide alkali metal salt and ionic liquid and applications thereof
  • Binary or ternary fluorine-containing sulfimide alkali metal salt and ionic liquid and applications thereof
  • Binary or ternary fluorine-containing sulfimide alkali metal salt and ionic liquid and applications thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0089] Embodiment 1: two (chlorosulfonyl) sulfonyl diimides (H 2 [(ClSO 2 N) 2 SO 2 ]) preparation

[0090] The synthesis reaction scheme is as follows:

[0091] NH 2 SO 2 NH 2 +SOCl 2 +ClSO 3 H→H 2 [(ClSO 2 N) 2 SO 2 ]+SO 2 +HCl

[0092] Add sulfuramide (NH 2 SO 2 NH 2 ) (48g, 0.5mol), SOCl 2 (167g, 1.4mol), ClSO 3 H (116 g, 1 mol). Stir magnetically, heat to 120°C and reflux for 24 hours, then distill under reduced pressure to collect fractions at 112-114°C / 1-2mm Hg. 135 g of colorless liquid was obtained, yield 92%.

Embodiment 2

[0093] Embodiment 2: (chlorosulfonyl) (perfluorobutylsulfonyl) sulfonyl diimide (H 2 [(ClSO 2 N)(C 4 f 9 SO 2 N) SO 2 ]) preparation

[0094]

[0095] Add the prepared C into the 250mL flask 4 f 9 SO 2 NHSO 2 NH 2 (37.8g, 0.1mol), SOCl 2 (16.7g, 0.14mol), ClSO 3 H (11.6 g, 0.1 mol). Heat to 120°C with stirring, reflux for 24 hours, and then distill under reduced pressure to collect fractions at 141-143°C / 1-2mm Hg. 40 g of product were obtained, yield 84%.

Embodiment 3

[0096] Example 3: Preparation of binary fluorine-containing sulfonimide and ternary fluorine-containing sulfonimide

[0097] The preparation conditions and experimental results of some binary fluorine-containing sulfonimides and ternary fluorine-containing sulfonimides are listed in Table 1.

[0098] Table 1 Experimental results for the preparation of binary and ternary fluorine-containing sulfonimides

[0099]

[0100]

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Abstract

The invention discloses a method for preparing binary or ternary fluorine-containing sulfimide alkali metal salts, a method for preparing ionic liquid by the binary or ternary fluorine-containing sulfimide alkali metal salts, and applications of the alkali metal salts and ionic liquid as electrolytes in carbon-based super capacitors, secondary lithium (ion) batteries, and the like. The method for preparing the binary or ternary fluorine-containing sulfimide alkali metal salts provided by the invention is short in operation steps, easy for product separation and purification, and high in product yield and purity; the binary or ternary fluorine-containing sulfimide lithium provided by the invention has good thermal stability and hydrolysis resistance; a nonaqueous electrolytic solution of the binary or ternary fluorine-containing sulfimide lithium has high conductivity and lithium ion transference number, and also exhibits good oxidation resistance and good compatibility with widely-used electrode materials; meanwhile, the ionic liquid containing the binary or ternary fluorine-containing sulfimide anions exhibits the properties of low viscosity and high conductivity, and has a wide electrochemical window.

Description

technical field [0001] The invention belongs to the field of organic fluorine chemistry, new materials and advanced power supply technology, and in particular relates to a method for preparing an alkali metal salt of a binary or ternary fluorine-containing sulfonimide and an ionic liquid, and the alkali metal salt and the ionic liquid as Applications of electrolyte materials in lithium (ion) batteries and carbon-based supercapacitors. Background technique [0002] Fluorine-containing sulfonylimides and their alkali metal salts and ionic liquids, especially lithium salts, are important fluorine-containing organic ion compounds. They have important industrial application value in the fields of high-performance non-aqueous electrolyte materials for clean energy devices such as secondary lithium (ion) batteries, supercapacitors, and aluminum electrolytic capacitors, as well as new high-efficiency catalysts. Therefore, people have been devoting themselves to the synthesis and ap...

Claims

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Application Information

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IPC IPC(8): C07C307/04C07C303/34C07C311/48C07C303/40H01M10/0568H01G9/035
CPCY02E60/12Y02E60/10
Inventor 周志彬韩鸿波聂进宋威张恒
Owner HUAZHONG UNIV OF SCI & TECH
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