Double-center nicotinic ionic liquid and preparation method thereof, electrolyte and lithium-ion battery

An ionic liquid, dual-center technology, applied in the field of electrochemistry, can solve problems such as slow research progress, and achieve the effect of improving stability, enriching species, and excellent electrochemical performance

Inactive Publication Date: 2016-01-20
OCEANS KING LIGHTING SCI&TECH CO LTD +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The first ionic liquid, nitroethylamine, was discovered as early as 1914, but research in this field has progressed slowly since then

Method used

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  • Double-center nicotinic ionic liquid and preparation method thereof, electrolyte and lithium-ion battery
  • Double-center nicotinic ionic liquid and preparation method thereof, electrolyte and lithium-ion battery
  • Double-center nicotinic ionic liquid and preparation method thereof, electrolyte and lithium-ion battery

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] (1) The dual-center nicotinic ionic liquid provided in Example 1 is specifically: dimethoxyethylnicotine tetrafluoroborate ionic liquid, and its structural formula is:

[0045]

[0046] (2) The preparation method of above-mentioned dimethoxyethyl nicotine tetrafluoroborate ionic liquid, comprises the following steps:

[0047] (a) preparation of dimethoxyethyl nicotine chloride salt:

[0048] Add 1 mol (ie 162.2 g) of nicotine and 2.2 mol (ie 108 g) of methoxychloroethane into a 250 mL flask respectively. in N 2 or Ar 2 Under the protection of the atmosphere, the temperature was raised to 70° C., and the reaction was stirred for 40 h. It was then left to cool and washed three times with ethyl acetate. Vacuum-dried at 80°C to obtain a light yellow solid which is dimethoxyethylnicotine chloride salt.

[0049] (b) Preparation of dimethoxyethylnicotine tetrafluoroborate ionic liquid:

[0050] In the 250mL flask, add 0.5mol (ie 175.7g) dimethoxyethylnicotine chloride s...

Embodiment 2

[0056] (1) The dual-center nicotinic ionic liquid provided in Example 2 is specifically: dimethoxypropylnicotine hexafluorophosphate ionic liquid, and its structural formula is:

[0057]

[0058] (2) The preparation method of above-mentioned dimethoxypropyl nicotine hexafluorophosphate ionic liquid, comprises the following steps:

[0059] (a) preparation of dimethoxypropyl nicotine bromide:

[0060] Add 1 mol (ie 162.2 g) of nicotine and 2.1 mol (321.4 g) of methoxybromopropane into a 250 mL flask respectively. in N 2 or Ar 2 Under the protection of atmosphere, the temperature was raised to 60° C., the reaction was stirred for 60 h, then left to cool and washed three times with ethyl acetate. Vacuum drying at 80°C yielded a light yellow solid which was dimethoxypropylnicotine bromide salt.

[0061] (b) Preparation of dimethoxypropylnicotine hexafluorophosphate ionic liquid:

[0062] In the 250mL flask, add 0.5mol (ie 234.2g) dimethoxypropyl nicotine bromide salt prepar...

Embodiment 3

[0068] (1) The dual-center nicotinic ionic liquid provided in Example 3 is specifically: dimethoxybutylnicotine trifluoromethanesulfonimide salt ionic liquid, and its structural formula is:

[0069]

[0070] (2) The preparation method of above-mentioned dimethoxybutyl nicotine trifluoromethanesulfonimide salt ionic liquid, comprises the following steps:

[0071] (a) preparation of dimethoxybutylpyridinium iodide salt:

[0072] 1 mol (ie 162.2 g) of nicotine and 2.3 mol (ie 492.2 g) of methoxybutane iodide were respectively added to a 250 mL flask. in N 2 or Ar 2 Under the protection of the atmosphere, the temperature was raised to 80°C, the reaction was stirred for 20 h, then left to cool and washed three times with ethyl acetate. Dry in vacuo at 80°C to obtain light yellow solid which is dimethoxybutylpyridinium iodide salt.

[0073] (b) Preparation of dimethoxybutylnicotine trifluoromethanesulfonimide salt ionic liquid:

[0074] In the 250mL flask, add 0.5mol (ie 295...

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Abstract

The invention relates to a double- center nicotine ionic liquid. A general formula of the double- center nicotine ionic liquid is shown in a formula (I), wherein Y is tetrafluoroboric acid negative ion, hexafluorophosphoric acid negative ion, trifluoromethyl sulfimide negative ion or trifluoromethane sulfonic acid negative ion; R is methoxyl alkyl with a general formula (II), wherein n is 2,3 or 4. The invention also relates to a preparation method of the double-center nicotine ionic liquid as well as ionic liquid electrolyte and a lithium ion battery which are made from the double-center nicotine ionic liquid. The prepared double-center nicotine ionic liquid adopts a double-center nicotine skeleton configuration, so that the doubly center nicotine ionic liquid has structural designability, and types of ionic liquid are enriched; besides, the ionic liquid electrolyte and the lithium ion battery which are made from the double-center nicotine ionic liquid have good electrochemical performance. The formula (I) and the formula (II) are described in the specification.

Description

technical field [0001] The invention relates to the field of electrochemistry, in particular to a class of double-center nicotinic ionic liquid and a preparation method thereof. The invention also relates to an electrolyte solution and a lithium ion battery prepared by using the double-center nicotinic ionic liquid. Background technique [0002] Ionic liquids are liquids at room temperature (generally below 100°C) and are composed of organic cations and inorganic anions or organic anions. Ionic liquids are adjustable, and changing their anion and cation structures according to different needs can achieve the designer's purpose, so ionic liquids are called the designer's solvent. The first ionic liquid, nitroethylamine, was discovered as early as 1914, but the research progress in this field has been slow since then. Until 1992, the research group led by Wikes synthesized 1-ethyl-3-methylimidazolium tetrafluoroborate ionic liquid ([EMIM]BF 4 ), the research on ionic liquid...

Claims

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Application Information

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Patent Type & AuthorityPatents(China)
IPC IPC(8): C07D401/04C07C311/48C07C309/06C07C303/32C07C303/40H01M10/0566
CPCC07D401/04H01M10/0525H01M10/0567H01M10/058Y02E60/10
Inventor周明杰刘大喜王要兵钟玲珑
OwnerOCEANS KING LIGHTING SCI&TECH CO LTD