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Method of electroplating graphene-metal composite material plating layer by using complex pulses, PCB and motor

A metal composite material, pulse electroplating technology, applied in metal pattern materials, electrolytic coatings, coatings, etc., can solve problems such as limited development, and achieve the effect of simple process, easy regeneration, and ion concentration restoration balance

Pending Publication Date: 2019-12-31
SICHUAN JUCHUANG SHIMOXI TECH CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although these methods can indeed deposit graphene-composite copper coatings, they all use traditional water-based electroplating, which has limited development due to environmental pollution. In order to reduce graphene and avoid hydroelectric interpretation of hydrogen, there is no actual production technology that can overcome these difficulties so far.

Method used

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  • Method of electroplating graphene-metal composite material plating layer by using complex pulses, PCB and motor
  • Method of electroplating graphene-metal composite material plating layer by using complex pulses, PCB and motor
  • Method of electroplating graphene-metal composite material plating layer by using complex pulses, PCB and motor

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Embodiment 1

[0055] This embodiment provides a method for utilizing complex pulse electroplating graphene-metal composite coatings. Compared with the prior art, such as water-based electroplating, powder firing and pressing, and chemical vapor deposition, this method is more environmentally friendly. It can be applied to the production of large-area graphene composite material coatings or films, and has low cost, simple process, and does not require high-temperature, high-vacuum and other preparation environments.

[0056] The method specifically includes: using an ionic liquid as an electroplating liquid, wherein graphene oxide is dispersed in the ionic liquid, and metal ions are also contained in the ionic liquid; the graphene-metal composite is obtained by depositing a current control pulse on a cathode substrate. Material coating, the current control pulse includes a forward pulse period in which the current and voltage are negative on the deposition surface, a reverse pulse period in w...

specific Embodiment approach 1

[0059] The ionic liquid system uses choline chloride and ethylene glycol system, and the molar ratio of choline chloride and ethylene glycol is 1:2. The metal ions contained in the ionic liquid are copper ions, and the concentration of the copper ions is 15 mM. The concentration of graphene oxide in the ionic liquid is 0.5g / L.

[0060] The graphene-metal composite coating is obtained by depositing on the cathode substrate (copper sheet) with current control pulse. Among them, the working time of the forward pulse period in each complex waveform pulse is 40ms, and the current density is -2.5ASD; the working time of the reverse pulse period is 10ms, and the current density is 0.5ASD; the pause time is 60ms. Pulse current density and corresponding voltage change see figure 1 and figure 2 .

[0061] During complex pulse electroplating, this specific embodiment also uses a stirrer to stir the ionic liquid, so that the concentration of graphene oxide and the concentration of co...

specific Embodiment approach 2

[0064] The ionic liquid system uses choline chloride and ethylene glycol system, and the molar ratio of choline chloride and ethylene glycol is 1:2. The metal ions contained in the ionic liquid are copper ions, and the concentration of the copper ions is 20 mM. The concentration of graphene oxide in the ionic liquid is 0.6g / L.

[0065] The graphene-metal composite material coating was deposited on the cathode substrate (stainless steel sheet) with current control pulse. Among them, the working time of the forward pulse period in each complex waveform pulse is 40ms, and the current density is -3.5ASD; the working time of the reverse pulse period is 15ms, and the current density is 1.0ASD; the pause time is 60ms. Pulse current density and corresponding voltage change see Figure 5 and Image 6 .

[0066] During complex pulse electroplating, this specific embodiment also uses a stirrer to stir the ionic liquid, so that the concentration of graphene oxide and the concentration...

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Abstract

The invention relates to the technical field of material surface engineering, and provides a method of electroplating a graphene-metal composite material plating layer by using complex pulses, a PCB and a motor. The method specifically comprises the steps: ionic liquid serves as electroplating liquid, graphene oxide is dispersed in the ionic liquid, and the ionic liquid further contains metal ions; and the graphene-metal composite material plating layer is deposited on a cathode substrate through current or voltage control pulses, wherein the current or voltage control pulses comprise a forward pulse period, a reverse pulse period and a pause period. The method is simple in process, low in cost, free of environmental pollution of traditional electroplating and capable of being applied to large-area coating or film production. The PCB comprises a base material plate and a bottom conductive wire. The graphene-metal composite material plating layer and the conductive wire are manufacturedthrough the method. According to the invention, the graphene-containing conductive wire is printed and wound on a PCB to form a brushless motor stator, so that a novel motor is provided.

Description

technical field [0001] The present invention relates to the technical field of material surface engineering, in particular to a method for electroplating a graphene-metal composite material coating using complex pulses, a PCB made by the method, and a motor using the PCB. Background technique [0002] Graphene is ultra-thin graphite containing only a single atomic layer or a few atomic layers, and each atomic layer consists of sp 2 Hybridized carbon atoms form a regular hexagonal grid and a two-dimensional honeycomb structure. It was first prepared and synthesized by Kostya Novoselov and Andre Geim of the University of Manchester in 2004 using a simple method called mechanical microstress technology. characterization. [0003] Graphene is the strongest substance known to man and has many novel physical properties. Graphene is currently known as the material with the best conductivity at room temperature, and its conductivity far exceeds that of ordinary conductors. In add...

Claims

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Application Information

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IPC IPC(8): H05K1/09H05K3/02C25D15/00C25D5/18C25D3/66
CPCC25D3/665C25D5/18C25D15/00H05K1/092H05K3/061
Inventor 黄迎春刘焕明
Owner SICHUAN JUCHUANG SHIMOXI TECH CO LTD
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