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Binary fluorine-containing sulfimide and preparation method of alkali metal salt of binary fluorine-containing sulfimide

A technology of sulfonylimide and alkali metal salt, applied in the field of preparation of alkali metal salt and ionic liquid

Inactive Publication Date: 2014-12-10
HUAZHONG UNIV OF SCI & TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] 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 fluorine-containing sulfimide and preparation method of alkali metal salt of binary fluorine-containing sulfimide

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0090] Embodiment 1: two (chlorosulfonyl) sulfonyl diimides (H 2 [(ClSO 2 N) 2 SO 2 ]) preparation

[0091] The synthesis reaction scheme is as follows:

[0092] NH 2 SO 2 NH 2 +SOCl 2 +ClSO 3 H→H 2 [(ClSO 2 N) 2 SO 2 ]+SO 2 +HCl

[0093] 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

[0094] Embodiment 2: (chlorosulfonyl) (perfluorobutylsulfonyl) sulfonyl diimide (H 2 [(ClSO 2 N)(C 4 f 9 SO 2 N) SO 2 ]) preparation

[0095]

[0096] 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

[0097] Example 3: Preparation of binary fluorine-containing sulfonimide and ternary fluorine-containing sulfonimide

[0098] The preparation conditions and experimental results of some binary fluorine-containing sulfonimides and ternary fluorine-containing sulfonimides are listed in Table 1.

[0099] Table 1 Experimental results for the preparation of binary and ternary fluorine-containing sulfonimides

[0100]

[0101]

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Abstract

The invention discloses a method for preparing binary or ternary fluorine-containing sulfimide, a method for preparing an ionic liquid from an alkali metal salt of the binary or ternary fluorine-containing sulfimide, and an application of the alkali metal salt and the ionic liquid as electrolyte in a carbon-based super capacitor, a secondary lithium (ion) battery, and the like. The method for preparing the alkali metal salt of the binary or ternary fluorine-containing sulfimide is simple and short in operation step, a product is easy to separate and purify, and the yield and the purity of the product are both high; the binary or ternary fluorine-containing sulfimide lithium disclosed by the invention is good in thermal stability and hydrolysis resistance, a non-water electrolysis liquid of the binary or ternary fluorine-containing sulfimide lithium is relatively high in conductivity and lithium ion transference number, relatively good in oxidation resistance and good in compatibility with electrode materials which are used widely; and meanwhile the ionic liquid containing binary or ternary fluorine-containing sulfimide anions is low in viscosity, high in conductivity and wide in electrochemical window.

Description

[0001] This application is a divisional application of No. 201110131558.x patent application, the original patent application number is 201110131558.x; Liquid and its application”; the filing date of the original patent application was May 20, 2011. technical field [0002] 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 [0003] 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 electr...

Claims

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Application Information

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