Microporous membrane material preparation method, microporous membrane material and application thereof

A microporous film and electrodeposition technology, applied in electrolytic organic material plating, electrolytic inorganic material plating, electroforming, etc., can solve the problems of difficult preparation of microporous film materials, low preparation repeatability, low relative density, etc. And the morphology is precise and controllable, the preparation repeatability is high, and the edge is neat.

Active Publication Date: 2019-07-26
JIUJIANG TELFORD ELECTRONICS MATERIAL CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to overcome the need for punching instruments with relatively high requirements for punching equipment in order to overcome the existing technology of using mechanical drilling or laser drilling to prepare small apertures or hole structures with special sizes and shapes on materials. The edge of the hole is rough and the preparation repeatability is low, and for the problem that the preparation of the microporous membrane material of special material is difficult, and the defect problem of the relatively dense membrane material prepared by the electrodeposition method, a kind of electrodeposition of the microporous membrane material is provided. The preparation method and microporous membrane material and its application, the preparation of microporous membrane material in a way similar to printing, has the characteristics of high efficiency, simplicity, and large-scale controllability; it can prepare membrane materials with special and complex pore structures; the prepared microporous membrane materials Porous membrane materials have the advantages of adjustable pore structure size and shape, neat pore edges and high preparation repeatability, stable mechanical and electrical properties, and low relative density; the preparation method is widely applicable and can be used for brittle materials, Microporous membrane materials of materials such as materials that are easily decomposed by heat, and the microporous membrane materials prepared by the method of the present invention can be used in the fields of lithium ion batteries, oil-water separation, chemical biosensors, solar cells and supercapacitors

Method used

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  • Microporous membrane material preparation method, microporous membrane material and application thereof
  • Microporous membrane material preparation method, microporous membrane material and application thereof

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preparation example Construction

[0021] The first aspect of the present invention provides a method for preparing a microporous membrane material by electrodeposition, wherein the method includes:

[0022] (1) form a non-conductive micro-lattice on the electrode, and form the electrode with the non-conductive micro-lattice as a template;

[0023] (2) placing the template in the electrolyte as a working electrode for electrodeposition, and forming a film-like deposition layer in the region where the micro-lattice does not exist on the template; and

[0024] (3) peeling off the film-like deposition layer.

[0025] According to the present invention, in step (3), the film-like deposition layer is peeled off, and the peeled-off film-like deposition layer is called a microporous membrane material.

[0026] According to the present invention, firstly, a non-conductive micro-lattice array can be formed on the electrode. In the present invention, as figure 1 as shown, figure 1 It is a schematic diagram of an elec...

Embodiment 1

[0060] This example is to illustrate the microporous membrane material prepared by the method of the present invention.

[0061] (1) Use inkjet printing technology to print polystyrene dot matrix on the titanium electrode, adjust the ink concentration and printing parameters, control the diameter of the circle of the deposition area after the ink droplet is dried to be 100 μm, and the center distance of the ink droplet to be 500 μm. The matrix distribution is 10×10, and the thickness of the formed polystyrene micro-lattice is 5 μm and the electrode formed with the polystyrene micro-lattice is used as a template;

[0062] (2) A titanium electrode (template) formed with polystyrene microlattice is used as a working electrode, another untreated platinum electrode is used as a counter electrode, and a calomel electrode is used as a reference electrode, and the electrochemical deposition is carried out by a constant potential method; Among them, the electrolyte composition is CuSO ...

Embodiment 2

[0068] This example is to illustrate the microporous membrane material prepared by the method of the present invention.

[0069] (1) Prepare a metal hollow mask, wherein the hole diameter of the hollow area is 10 μm, the hole spacing is 50 μm, and the hole distribution is 100×100; the metal hollow mask is covered on the surface of the carbon cloth, and then sprayed with polytetrafluoroethylene Spraying; carbon cloth electrode area is 4cm 2 ; The unmasked area on the surface of the carbon cloth forms a dense polytetrafluoroethylene film, while the covered area is still carbon cloth;

[0070] (2) With the carbon cloth (template) that is formed with polytetrafluoroethylene micro-lattice as working electrode, platinum electrode is counter electrode, adopts cyclic voltammetric deposition method to carry out electrodeposition; Wherein, electrolyte composition is aniline (0.1mol / L), sulfuric acid (0.5mol / L). At a deposition voltage of -0.2V and a temperature of 20°C, a cyclic volt...

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Abstract

The invention relates to the technical field of microporous membrane materials, and discloses a microporous membrane material preparation method, a microporous membrane material and application thereof. The method comprises the steps of (1) forming a non-conductive microarray on an electrode and using the non-conductive microarray as a mold plate; (2) placing the mold plate in electrolyte for electrodeposition, and forming a film-like deposition layer on an area, without the microarray, on the electrode; and (3) stripping the film-like deposition layer. The method is high in efficiency, simpleand controllable in large area; the membrane material with a special complicated pore structure and the adjustable size and shape can be prepared; the advantages that the edges of pores are neat, thepreparation repeatability is high, the mechanical and electrical properties are stable, and the relative density is low are achieved, the preparation method is wide in application face, and the microporous membrane material prepared by the method can be used in the fields of lithium ion batteries, oil-water separation, chemical biosensors, solar cells and supercapacitors.

Description

technical field [0001] The invention relates to the technical field of microporous membrane materials, in particular to an electrodeposition preparation method of the microporous membrane material, the microporous membrane material and applications thereof. Background technique [0002] Microporous membrane materials have the advantages of uniform pore size, high porosity, and low relative density, and are widely used in lithium-ion batteries, membrane filtration, and membrane separation. [0003] Preparation of porous membrane materials based on electrodeposition is a commonly used method. At present, this method mainly includes two steps: preparation of membrane materials by electrodeposition and drilling holes on the membrane materials. [0004] The method of punching holes in membrane materials includes mechanical punching. For example, CN108890765A discloses a plastic film punching device; CN108145998A discloses a preparation equipment and processing method of a micropo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25D7/00C25D5/02C25D3/38C25D1/04C25D5/18C25D9/02C25D3/48C25D9/04C25D3/44C25D3/22
CPCC25D1/04C25D3/22C25D3/38C25D3/44C25D3/48C25D5/02C25D5/18C25D7/00C25D9/02C25D9/04
Inventor 李会增兰阳杰宋延林
Owner JIUJIANG TELFORD ELECTRONICS MATERIAL CO LTD
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