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Method for preparing iodide-doped polymer gel electrolyte

A technology of gel electrolyte and polymer, which is applied in the direction of capacitor electrolyte/absorbent, capacitor parts, etc., can solve the problems that cannot meet the application requirements of electrochemical supercapacitors, low conductivity, etc., to improve pseudocapacitance and power density, The effect of improving electrical conductivity

Active Publication Date: 2013-10-30
HUAQIAO UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Gel electrolytes are formed by the absorption of electrolyte salts by the polymer matrix. The existing gel electrolytes are non-redox active electrolytes, which only change the physical state to solve the shortage of solid-liquid electrolytes, and their conductivity is still low. , cannot meet the application requirements of electrochemical supercapacitors

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] The preparation method of the iodide-doped polymer gel electrolyte of the present invention is realized by the following steps:

[0019] The first step, preparation of the polymer gel matrix: first mix polyvinyl alcohol and deionized water at a mass ratio of 1:9, stir at 50°C until completely dissolved, and obtain a homogeneous polymer gel matrix solution.

[0020] The second step, solution preparation:

[0021] (a) Preparation of potassium hydroxide solution: Potassium hydroxide was dissolved in deionized water to prepare a 0.5 mol / L potassium hydroxide solution.

[0022] (b) Configuration of potassium iodide aqueous solution: potassium iodide was dissolved in deionized water to prepare a 0.1 mol / L potassium iodide aqueous solution.

[0023] In the third step, add 15 ml of the potassium hydroxide solution prepared in the second step (a) to the homogeneous polymer gel matrix solution obtained in the first step, and continue stirring to keep the solution in a homogeneou...

Embodiment 2

[0028] The first step, the preparation of the polymer gel matrix: first mix polyethylene oxide and deionized water at a mass ratio of 1:4, stir at 60° C. until completely dissolved, and obtain a homogeneous polymer gel matrix solution.

[0029] The second step, solution preparation:

[0030] (a) Preparation of Potassium Hydroxide Solution: Dissolve Potassium Hydroxide in deionized water to prepare 1 mol / L Potassium Hydroxide Solution.

[0031] (b) Configuration of sodium iodide solution: Dissolve sodium iodide in deionized water to prepare a 0.2 mol / L sodium iodide solution.

[0032] In the third step, add 10 ml of potassium hydroxide solution prepared in the second step (a) to the homogeneous polymer gel matrix solution obtained in the first step, and continue stirring to keep the solution in a homogeneous state.

[0033] The 4th step, in the homogeneous solution that the 3rd step obtains, add the sodium iodide aqueous solution prepared in the 10ml second step (b), continue ...

Embodiment 3

[0037] The first step, the preparation of the polymer gel matrix: first mix sodium polyacrylate and deionized water at a mass ratio of 2:5, stir at 1°C until completely dissolved, and obtain a homogeneous polymer gel matrix solution.

[0038] The second step, solution preparation:

[0039] (a) Preparation of sodium hydroxide solution: Dissolve sodium hydroxide in deionized water, and configure it into a 2mol / L sodium hydroxide solution.

[0040] (b) Configuration of sodium iodide solution: Dissolve sodium iodide in deionized water to prepare a 0.4 mol / L sodium iodide solution.

[0041] In the third step, add 10 ml of the sodium hydroxide solution prepared in the second step (a) to the homogeneous polymer gel matrix solution obtained in the first step, and continue stirring to keep the solution in a homogeneous state.

[0042] The 4th step, in the homogeneous solution that the 3rd step obtains, add the sodium iodide aqueous solution prepared in the 10ml second step (b), contin...

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Abstract

The invention discloses a method for preparing iodide-doped alkaline polymer gel electrolyte. The method is characterized by firstly dissolving the polymer gel matrix in water, adding defined amount of alkali, then adding appropriate iodide to prepare an electrolyte composite and removing surplus moisture from the electrolyte composite under certain conditions to form the iodide-doped alkaline polymer gel electrolyte. The method has the following beneficial effects: the gel electrolyte prepared by the method has good conductivity; the maximum room temperature conductivity of the gel electrolyte exceeds 12mS / cm; and the polymer gel electrolyte has wide application prospect in such fields as super capacitors, lithium ion batteries, nickel-metal hydride batteries, zinc-manganese batteries, solar batteries, photoelectric devices and the like.

Description

technical field [0001] The invention relates to a preparation method of an iodide-doped polymer gel electrolyte, belonging to the fields of new material technology and energy technology. Background technique [0002] Electrochemical supercapacitor is a new type of electrochemical energy storage device between traditional capacitors and rechargeable batteries. It has the advantages of higher power density than traditional capacitors and higher power density than rechargeable batteries, and it can be charged and discharged quickly and has a long service life. Wide operating temperature range, maintenance-free, etc., have a wide range of application prospects, such as portable instruments and equipment, data memory storage systems, electric vehicle power supplies and emergency backup power supplies, etc. The key to electrochemical supercapacitors lies in the selection of electrodes and electrolyte materials. [0003] Gel electrolytes combine the advantages of high conductivity,...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01G9/022
CPCY02E60/13
Inventor 吴季怀余海君范乐庆林建明黄妙良兰章
Owner HUAQIAO UNIVERSITY