Preparation and application of non-woven multifunctional diaphragm

A multi-functional, non-fabric technology, which is applied in the manufacture of hybrid capacitor separators, non-aqueous electrolyte batteries, hybrid/electric double layer capacitors, etc., can solve the problems of lack of diaphragm research and achieve excellent electrochemical performance and stability, size Thin, low-cost effect

Inactive Publication Date: 2021-01-22
GUILIN UNIVERSITY OF TECHNOLOGY
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Problems solved by technology

At present, the focus of people's research is mainly on electrode materials and electrolytes, while research on separators is relatively scarce.

Method used

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  • Preparation and application of non-woven multifunctional diaphragm
  • Preparation and application of non-woven multifunctional diaphragm
  • Preparation and application of non-woven multifunctional diaphragm

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Embodiment Construction

[0035] The specific implementation mode of the present invention will be further elaborated below in conjunction with description accompanying drawing and specific implementation:

[0036] Based on the preparation and testing method of a kind of non-fabric multifunctional diaphragm, concrete process is as follows:

[0037] a. Prepare a 50ml solution of deionized water and formamide with a volume ratio of 2:1, stir in a magnetic stirrer for 20min, and make it fully mixed;

[0038] b. Weigh 0.5g of commercial vanadium pentoxide medicine, pour it into the mixed solution in process a, stir in a magnetic stirrer for 1h, until the color of the solution is evenly distributed;

[0039] c. React in a hydrothermal reactor at 180°C for 12 hours;

[0040] d. The precipitate of the hydrothermal reaction was filtered through ethanol for 6 times, and the obtained filter residue was dried in a vacuum oven at 70°C for 6 hours;

[0041] e. Finally, in a muffle furnace, sinter at a high temper...

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Abstract

The invention discloses preparation and application of a non-woven multifunctional diaphragm. The preparation method comprises the following steps: (1) mixing deionized water and a formamide solutionwith a certain proportion with a commercial vanadium pentoxide drug, carrying out a hydrothermal reaction in a reaction kettle under certain conditions, and carrying out suction filtration and dryingto obtain a vanadium pentoxide nanosheet; (2) mixing the vanadium pentoxide nanosheet with a certain concentration with polyvinyl butyral ester, polyethylene glycol octylphenyl ether and dibutyl phthalate in absolute ethyl alcohol, drying to form a diaphragm, and testing the water absorption rate of the diaphragm; and (3) assembling the vanadium pentoxide nanosheet diaphragm with a certain concentration and two pieces of commercial carbon cloth with the same size into an energy storage device, exploring the optimal concentration of the vanadium pentoxide nanosheet of the diaphragm, and calculating the ionic conductivity of the vanadium pentoxide nanosheet. According to the invention, the diaphragm which is low in cost, high in ionic conductivity, stable in electrochemical performance and adjustable in adsorbability is prepared through the method which is simple and rapid to operate, and a new thought is provided for research and development of diaphragms of energy storage devices.

Description

technical field [0001] The invention relates to the field of preparation and application of an energy storage device diaphragm, in particular to the preparation and application of a non-woven multifunctional diaphragm. Background technique [0002] With the advancement of human science and technology, the excessive consumption of fossil energy can no longer meet people's needs, and cause serious environmental pollution. Therefore, electrochemical energy storage devices have become a research hotspot. For example, lithium-sulfur batteries, supercapacitors, and lithium batteries have attracted widespread attention because of their superior performance. [0003] The above energy storage devices are composed of three parts: electrode material, electrolyte and diaphragm. Therefore, the excellent properties of each of these three parts determine the electrochemical performance of the device. At present, the focus of people's research is mainly on electrode materials and electro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01G11/84H01G11/52H01M50/403H01M50/497H01M50/446H01M10/052
CPCH01G11/52H01G11/84H01M10/052Y02E60/10
Inventor 刘博天江林峰石成龙刘勇平
Owner GUILIN UNIVERSITY OF TECHNOLOGY
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