A kind of preparation method and application of nickel cloth current collector

A current collector and nickel cloth technology, which is applied in the field of flexible current collectors, can solve the problems of unfavorable commercial production of batteries, high cost, and complicated operation, and achieve the effects of favorable maintenance, easy operation, and high energy density

Active Publication Date: 2020-05-05
HUBEI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Among them, the patent application number 201610164729.1 uses electrodeposition to coat a layer of metal on the non-woven substrate, and the patent application number 201710189749.9 uses vacuum sputtering to coat a layer of metal on the textile substrate. However, these two methods are complicated to operate and expensive, which is not conducive to the commercial production of batteries.

Method used

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  • A kind of preparation method and application of nickel cloth current collector
  • A kind of preparation method and application of nickel cloth current collector
  • A kind of preparation method and application of nickel cloth current collector

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] The preparation method of a nickel cloth current collector in this embodiment is to use gauze as the base, and then carry out roughening, sensitization and activation, reduction, electroless nickel plating and post-treatment processes on the base, so that the metal conductive nickel layer is evenly coated On the fibers of the base, the method specifically comprises the following steps:

[0042] (1) Substrate roughening: at 70°C, soak the substrate material in the roughening solution for 30 minutes, and then wash it with deionized water to obtain the roughened substrate material, wherein the roughening solution is sodium hydroxide aqueous solution, the concentration of sodium hydroxide in the roughened solution is 200g / L;

[0043] (2) Sensitization and activation: at room temperature, put the roughened base material described in step (1) into the sensitization activation solution and soak for 5 minutes, then wash with deionized water to obtain the base material after sen...

Embodiment 2

[0059] The preparation method of a nickel cloth current collector in this embodiment is to use gauze as the base, and then carry out roughening, sensitization and activation, reduction, electroless nickel plating and post-treatment processes on the base, so that the metal conductive nickel layer is evenly coated on the fibers of the base. The present embodiment adopts the same process steps and process parameters as in Example 1, the only difference is that the mixed solution in step (5) is composed of cobalt chloride, hexamethylenetetramine (HMT) and deionized water, and the chlorine Cobalt chloride is 6 mmol, hexamethylenetetramine is 10 mmol, and deionized water is 60 ml.

[0060] The nickel cloth prepared in this embodiment was subjected to a scanning electron microscope (SEM) test, and a layer of uniform metal nickel was plated on the surface of the gauze substrate, which can effectively improve the conductivity of the battery, and it was tested for electrochemical perfor...

Embodiment 3

[0062] The preparation method of a nickel cloth current collector in this embodiment is to use gauze as the base, and then carry out roughening, sensitization and activation, reduction, electroless nickel plating and post-treatment processes on the base, so that the metal conductive nickel layer is evenly coated on the fibers of the base. This embodiment adopts the same process steps and process parameters as in Example 1, the only difference is that the mixed solution in the step (5) of this embodiment is composed of nickel chloride hexahydrate, hexamethylenetetramine (HMT) and deionized Water composition, described nickel chloride hexahydrate is 6mmol, hexamethylenetetramine is 10mmol, and deionized water is 60ml.

[0063] The nickel cloth prepared in this embodiment was subjected to a scanning electron microscope (SEM) test, and a layer of uniform metal nickel was plated on the surface of the gauze substrate, which can effectively improve the conductivity of the battery, an...

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Abstract

The invention relates to fabrication method and application of a nickel-fabric current collector, and belongs to the technical field of a flexible current collector. The fabrication method comprises the steps of taking gauze as a substrate, and sequentially performing roughing, sensitization, activation, reduction, chemical nickel plating and post-treatment process on the substrate so that a metalconductive nickel layer is uniformly coated on fiber of the substrate and the nickel-fabric current collector is fabricated. The pure-cotton absorbent gauze is sensitized and activated by a one-stepmethod, the operation program can be greatly simplified, and the qualified rate of a product is improved; a normal-temperature alkali chemical plating liquid is employed, the problem of plating liquidwaste caused by instability of the plating liquid under a high-temperature condition is prevented, the maintenance of a solution is facilitated, and operation is facilitated; and moreover, a lithiumion battery and a supercapacitor which are fabricated by employing the nickel-fabric current collector have the advantages of small interface internal resistance, high energy density and high pseudo capacitance, the production efficiency of the battery is greatly improved, the production cost is reduced, and the fabrication method is suitable for industrial production on a large scale.

Description

technical field [0001] The invention belongs to the technical field of flexible current collectors, and in particular relates to a preparation method of a nickel cloth current collector and its application in flexible lithium-ion batteries and flexible supercapacitors. Background technique [0002] Current collector refers to the structure or parts that collect current. In lithium-ion batteries, it mainly refers to metal foil, such as copper foil and aluminum foil. The currents are pooled together to form a larger current output, so the current collector should be in full contact with the active material, and the internal resistance should be as small as possible. [0003] Traditional lithium-ion battery current collector materials include metal conductor materials such as copper, aluminum, nickel and stainless steel, semiconductor materials such as carbon, and composite materials, among which metal foil is the main material. The lithium battery positive current collector u...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M4/66H01M10/0525H01G11/68H01G11/70
CPCH01G11/68H01G11/70H01M4/667H01M10/0525Y02E60/10Y02E60/13
Inventor 万厚钊王浩王聪甘億张军
Owner HUBEI UNIV
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