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Study on Pulse-Reverse Electroplating Process for the Manufacturing of a Graphene-Based Coating.

Gabriele Baiocco¹, Silvio Genna¹, Erica Menna¹

¹Department of Enterprise Engineering Mario Lucertini, University of Rome Tor Vergata, 00133 Rome, Italy.

Materials (Basel, Switzerland)

|January 21, 2023

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Pulse-reverse electrodeposition successfully created copper-graphene coatings on aluminum wires, enhancing electrical conductivity. This method effectively incorporates graphene nanoplates, reducing electrical resistivity by up to 3.4%.

Area of Science:

Materials Science
Electrochemistry
Nanotechnology

Background:

Aluminum wires (AA1370) have limitations in electrical conductivity for certain applications.
Enhancing electrical conductivity is crucial for improving power transmission efficiency.
Composite coatings offer a promising route to modify material properties.

Purpose of the Study:

To investigate the feasibility of enhancing AA1370 aluminum wire's electrical conductivity.
To explore the use of pulse-reverse electrodeposition for creating copper-graphene (Cu-GnP) composite coatings.
To analyze the impact of plating parameters on coating characteristics and performance.

Main Methods:

A 2^3 factorial design was employed to systematically vary plating parameters.

Keywords:

aluminum composite coatings electrical conductivity graphene pulse reverse electroplating

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Key parameters investigated included current density, frequency, and duty cycle.

Analysis of Variance (ANOVA) was used to assess the influence of parameters on morphology and electrical resistance.

Main Results:

All tested conditions resulted in well-compacted coatings with good graphene nanoplates incorporation.
The microstructure of the copper deposit effectively integrated the graphene nanoplates.
Optimal plating conditions led to a reduction in electrical resistivity by up to 3.4% compared to uncoated aluminum.

Conclusions:

Pulse-reverse electrodeposition is a viable method for producing Cu-GnP composite coatings on aluminum wires.
The process parameters significantly influence the coating's morphology and electrical properties.
The developed composite coating demonstrates potential for improving the electrical conductivity of aluminum wires.