Lithium-air battery mixed type ionic liquid electrolyte and its preparation method
A technology of ionic liquid and electrolyte, which is applied in the direction of fuel cell half-cells and primary battery-type half-cells, etc., can solve the problems of lithium-air battery specific capacity decline, high specific energy cycle voltage, low conductivity and solubility, etc. Achieve the effect of wide electrochemical window, increase specific capacity and charge and discharge times, and small internal resistance
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Examples
Embodiment 1
[0027] Example 1 Preparation of Dialkylpyridine Hexafluorophosphate Ionic Liquid
[0028] Step 1: Add 100-500ml of N-picoline and the corresponding volume of n-bromobutane with a molar ratio slightly greater than 1 into a 2000ml single-necked flask, or add 100-500ml of N-ethylpyridine and a volume of bromobutane with a molar ratio slightly greater than 1 Add the corresponding volume of bromoethane into a 2000ml single-necked flask, reflux in an oil bath at a temperature of 100°C, and after reflux for 36 hours, cool down and crystallize;
[0029] Step 2: Suction filtration of the crystals obtained in Step 1;
[0030] Step 3: Add 60-300ml of acetonitrile and 120-600ml of ethyl acetate to the crystals obtained by suction filtration in Step 2, heat in an oil bath at 80°C, and reflux for 20 minutes. After the white precipitate is completely dissolved, filter while it is hot, and cool down to crystallize;
[0031] Step 4: Repeat the operations of Step 2 and Step 3 for 2 to 3 times ...
Embodiment 2 6
[0036] The preparation of embodiment 2 hexafluorophosphate dinuclear cyclic ammonium salt
[0037] Step 1: the preparation of N, N'-1-ethyl-4-butyl triethylene diammonium halide salt, C 2 h 5 Br was added dropwise in the methanol solution of triethylene diammonium, heated to reflux, and unreacted raw materials were removed by distillation under reduced pressure to obtain monosubstituted N-1-yl triethylene diammonium bromide salt;
[0038] Step 2: Mix monosubstituted N-1-yl triethylene diammonium bromide salt with C 4 h 9 Br or C 2 h 5 Br is made into a solution, continue to heat and reflux, and prepare N, N'-1-ethyl-4-butyl triethylene diammonium bromide salt or N, N'-1-ethyl-4 ethyl triethylene diammonium bromide Salt;
[0039] Step 3: Dissolve the prepared N,N'-1,4-diethyltriethylenediammonium bromide salt or N,N'-1-ethyl-4ethyltriethylenediammonium bromide salt in a small amount of water , was added to an aqueous solution of hexafluorophosphoric acid of equimolar mas...
Embodiment 3
[0040] The preparation of embodiment 3 mixed type ionic liquid electrolyte
[0041](1) Under an argon protective atmosphere, mix 1-methyl-3-butylpyridine hexafluorophosphate ionic liquid with lithium hexafluorophosphate and N, N'-1-ethyl-4-butyltriethylene diammonium hexafluoro Phosphate mixed, the molar ratio of 1-methyl-3-butylpyridine hexafluorophosphate ionic liquid, lithium hexafluorophosphate and N,N'-1-ethyl-4-butyl triethylene diammonium hexafluorophosphate is 5 : 4:1, 5:3:2, 4:4:2, 3:5:2 or 4:5:1, uniformly stirred for 36 hours in a vacuum environment, and then dried in a vacuum for 24 hours to obtain the final product.
[0042] (2) Under an argon protective atmosphere, mix 1-methyl-3-butylpyridine hexafluorophosphate ionic liquid with lithium hexafluorophosphate and N, N'-1-ethyl-4-ethyltriethylenediammonium hexafluoro Phosphate mixture, the molar ratio of 1-methyl-3-butylpyridine hexafluorophosphate ionic liquid, lithium hexafluorophosphate and N,N'-1-ethyl-4-ethyl...
PUM
Abstract
Description
Claims
Application Information
- R&D Engineer
- R&D Manager
- IP Professional
- Industry Leading Data Capabilities
- Powerful AI technology
- Patent DNA Extraction
Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.
© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com