Method for preparing molten electrolyte

A molten salt electrolyte, melting point technology, applied in molten electrolyte fuel cells, capacitor electrolytes/absorbents, circuits, etc., can solve imperfections and other problems, and achieve the effect of low melting point

Inactive Publication Date: 2009-01-28
有研资源环境技术研究院(北京)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although scientific and technological workers at home and abroad have done a lot of research on molten salt electrolytes with low melting point and h

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0012] Example 1

[0013] A preparation method of molten salt electrolyte. The whole experiment process is carried out in a dry environment with RH≤2%. The preparation method is as follows:

[0014] (1) LiCl, KCl, LiBr and KBr are used as raw materials, and analytically pure chemical reagents are used. Their purity is in order: LiCl≥97.0%, KCl≥99.8%, LiBr≥98.0% and KBr≥99.0%. All raw materials are used. Dry it in a vacuum drying oven at 150°C for 4 hours to completely dehydrate it, and store it in a desiccator after vacuum cooling;

[0015] (2) Use an electronic balance to accurately weigh the raw materials according to the weight percentage LiCl:KCl:LiBr:KBr=15:15:35:35, and then use an agate mortar to grind them evenly and fully before use;

[0016] (3) Put the uniformly mixed raw materials in a high-temperature furnace and slowly raise the temperature to 600°C to melt them completely and keep them warm for 2 hours, and then cool to room temperature along with the furnace;

[00...

Example Embodiment

[0019] Example 2

[0020] A preparation method of molten salt electrolyte. The whole experiment process is carried out in a dry environment with RH≤2%. The preparation method is as follows:

[0021] (1) LiCl, KCl, LiBr and KBr are used as raw materials, and analytically pure chemical reagents are used. Their purity is in order: LiCl≥97.0%, KCl≥99.8%, LiBr≥98.0% and KBr≥99.0%. All raw materials are used. Dry it in a vacuum drying oven at 250°C for 4 hours to completely dehydrate it, and store it in a desiccator after vacuum cooling;

[0022] (2) Use an electronic balance to accurately weigh the raw materials according to the weight percentage LiCl:KCl:LiBr:KBr=20:20:30:30, and then use an agate mortar to grind them evenly and fully before use;

[0023] (3) Put the uniformly mixed raw materials in a high-temperature furnace and slowly raise the temperature to 750°C to completely melt and keep it for 2 hours, and then cool to room temperature along with the furnace;

[0024] (4) Mech...

Example Embodiment

[0026] Example 3

[0027] A preparation method of molten salt electrolyte. The whole experiment process is carried out in a dry environment with RH≤2%. The preparation method is as follows:

[0028] (1) LiCl, KCl, LiBr and KBr are used as raw materials, and analytically pure chemical reagents are used. Their purity is in order: LiCl≥97.0%, KCl≥99.8%, LiBr≥98.0% and KBr≥99.0%. All raw materials are used. Use a vacuum drying oven to vacuum dry at 200°C for 4 hours to completely dehydrate it, and store it in a desiccator after vacuum cooling;

[0029] (2) Use an electronic balance to accurately weigh the raw materials according to the weight percentage LiCl:KCl:LiBr:KBr=18:19:32:31, and then use an agate mortar to grind them evenly and fully before use;

[0030] (3) Put the uniformly mixed raw materials in a high-temperature furnace and slowly raise the temperature to 650°C to melt them completely and keep them for 2 hours, and then cool them to room temperature along with the furnac...

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Abstract

The invention discloses a method for preparing fused salt electrolyte, belonging to the technical field of the electrolyte material and a preparation method thereof. The aims of reducing the melting point, increasing the conductivity and improving the stability are fulfilled by adjusting the weight percentage of components. The whole experimental process is performed in a dry environment with RH less than and equal to 2 percent. The raw materials in weight percentage are 15 to 20 of LiCl, 15 to 20 of KCl, 30 to 35 of LiBr and 25 to 40 of KBr. The raw materials are dried in vacuum, dehydrated, cooled, weighed according to the weight percentage and ground evenly. The mixed evenly raw materials are heated to increase the temperature slowly in a high temperature furnace so as to melt completely and keep the temperature, the mixture is cooled to the room temperature together with the furnace, and the obtained fused salt is crushed and ground mechanically to obtain the fused salt electrolyte. The prepared fused salt electrolyte has the characteristics of low melting point, high conductivity and good thermal stability.

Description

technical field [0001] The invention belongs to the technical field of electrolyte materials and their preparation, and in particular relates to a method for preparing a molten salt electrolyte. Background technique [0002] The thermal battery is a kind of thermally activated reserve battery that uses the heating system of the battery itself to heat and melt the non-conductive solid-state salt electrolyte into an ionic conductor and enter the working state. Heating reserves and long-term storage are two characteristics of thermal batteries. After activation, it can be charged at 1500mA / cm in a short time 2 Density discharge, can also be low current density (<50mA / cm 2 ) for several hours. Due to its high working temperature (350-550°C), high specific energy, high specific power, high discharge rate, wide operating environment temperature, long storage time (up to 10-25 years), and short activation time (0.2-0.5s) space), compact structure, simple process, low cost an...

Claims

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Application Information

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IPC IPC(8): H01M8/14H01M10/38H01G9/022
CPCY02E60/12Y02E60/10Y02E60/50Y02P70/50
Inventor 罗远辉尹延西江洪林张力陈松刘成山
Owner 有研资源环境技术研究院(北京)有限公司
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