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A compound electrolyte material and its making method

A composite electrolyte and composition technology, applied in capacitor electrolytes/absorbents, chemical instruments and methods, circuits, etc., can solve problems such as poor long-term stability, easy leakage of liquid electrolytes, and shortened working life.

Inactive Publication Date: 2008-08-13
INST OF PHYSICS - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the DSSC photoelectric conversion efficiency of the liquid electrolyte has reached more than 10%, this electrolyte has the following problems: the liquid electrolyte is ea

Method used

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  • A compound electrolyte material and its making method
  • A compound electrolyte material and its making method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0055] According to the liquid mixture A is 94wt%, the solid inorganic layered compound powder B is 6wt%, wherein the solid inorganic layered compound powder is Na-montmorillonite, its particle size is 50-500nm, and the specific surface area is 100m 2 / g;

[0056] Described liquid mixture is:

[0057] A-1) Ethanol 80wt%

[0058] A-2) a kind of inorganic salt (lithium iodide) 10wt%

[0059] A-3) An ionic liquid (1-propyl-3-methylimidazolium iodide) 10wt%

[0060] A-4) The amount of iodine iodine and component A-2) and components

[0061] Iodine I contained in A-3) 2 / I - (Iodine) molar ratio is 1:10

[0062] The ionic liquid used in the present embodiment and the following examples, 1-propyl-3-methylimidazolium iodide salt, is the use of "Li Yongfang et al., "Chemical Bulletin", 2002 (4): 243-250) ion It is prepared by the one-step method introduced in "Progress in Liquid Research", that is, adding N-methylimidazole and n-propane iodide at a ratio of 5:4 to cyclohexane, ...

Embodiment 2

[0069] 1. Weigh according to the following components and formula:

[0070] composition

Dosage

A-1

ethanol (solvent)

20g

[0071] A-2

Lithium iodide (inorganic salt)

3g

A-3

1-Propyl-3-methylimidazolium iodide salt (ionic liquid)

3g

A-4

iodine

0.87g

A-5

4-tert-butylpyridine (additive)

3g

B

Na-montmorillonite (inorganic layered compound)

1.9g

[0072] 2. Preparation of electrolyte:

[0073] (a) Configure the liquid mixture: dissolve the weighed lithium iodide, 1-propyl 3-methylimidazolium iodide salt, iodine and additive 4-tert-butylpyridine in ethanol, and perform mechanical stirring to mix evenly to form a transparent The liquid mixture; Other steps are with embodiment 1

[0074] 3. The preparation and testing steps of the battery are the same as in Example 1. The photoelectrochemical performance test results of the battery are sho...

Embodiment 3

[0076] 1. Weigh according to the following components and formula:

[0077] composition

Dosage

A-1

ethanol (solvent)

20g

A-2

Lithium iodide (inorganic salt)

0g

A-3

1-Propyl-3-methylimidazolium iodide salt (ionic liquid)

2.5g

A-4

iodine

0.25g

A-5

4-tert-butylpyridine (additive)

2.5g

B

Na-montmorillonite (inorganic layered compound)

1.6g

[0078] 2. Preparation of electrolyte:

[0079] (a) Configure the liquid mixture: dissolve the weighed 1-propyl 3-methylimidazolium iodide salt, iodine and 4-tert-butylpyridine in ethanol, and perform mechanical stirring to mix uniformly to form a transparent liquid mixture; Step is with embodiment 1

[0080] 3. The preparation and testing steps of the battery are the same as in Example 1. The photoelectrochemical performance test results of the battery are shown in Table I.

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Abstract

The present invention relates to composite electrolyte compound, including the ingredients and ratio as follows: A. liquid mixture 70 - 99 wt %; B. solid inorganic layer-shaped compound powder 1 - 30 wt%; the diameter of the solid inorganic layer-shaped compound powder is below 1 mm, and specific surface is 10 to 2000 m<2>/g; said liquid mixture includes the following components: mixing 60 - 99 wt% of alcohols, 0 - 20 wt% of one inorganic or organic salts or arbitrary combination thereof, 1 - 20 wt% of one ion liquid or arbitrary combination thereof, iodine and 0 - 20 wt% additives, so as to prepare liquid mixture A; wherein the mole ratio of iodine and that in components A-2) as well as component A-3 is from 1 : 20 to 1 : 2. The preparation method of the present invention includes mixing each of the weighed components uniformly to prepare liquid mixture A; then to add an inorganic layer compound powder B into the liquid mixture A under stirring condition, and mixing uniformly; to make the alcohols to volatilize until slurry state at room temperature to obtain composite electrolyte compound.

Description

technical field [0001] The invention relates to an electrolyte material and a preparation method thereof, in particular to an environment-friendly composite electrolyte composition and a preparation method for high-energy batteries such as solar cells, lithium ion batteries, fuel cells, and electrochemical supercapacitors. Background technique [0002] Electrolyte materials with high conductivity and stable performance can be used as electrolytes for various batteries and have broad application prospects. In 1991, the Swiss Federal Institute of Technology Professor Michael and his collaborators published an article in "Nature" (Nature, Volume 353, Page 737, 1991 (Nature, Vol.353, 737, 1991)), introducing a new type of solar cell - dye sensitization Solar battery. This kind of battery has simple preparation process, low cost and high efficiency, so it has attracted extensive attention from scientists all over the world. Nanocrystalline dye-sensitized solar cells generally...

Claims

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Application Information

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IPC IPC(8): H01B1/00C07D233/58B01J19/00H01G9/022H01G9/20H01L31/04H01M10/40H01M10/0568H01M10/0569
CPCY02E10/50Y02E60/122Y02E60/10
Inventor 罗艳红孟庆波
Owner INST OF PHYSICS - CHINESE ACAD OF SCI
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