Chemical Vapour Deposition of Graphene for Durable Anticorrosive Coating on Copper.

Dali Ji,Fei Wang,Xinyue Wen,Tobias Foller,Rakesh Joshi,Yi You

doi:10.3390/nano10122511

Dali Ji, Fei Wang + Show 4 more

Open Access

https://doi.org/10.3390/nano10122511

Copy DOI

Abstract

Due to the excellent chemical inertness, graphene can be used as an anti-corrosive coating to protect metal surfaces. Here, we report the growth of graphene by using a chemical vapour deposition (CVD) process with ethanol as a carbon source. Surface and structural characterisations of CVD grown films suggest the formation of double-layer graphene. Electrochemical impedance spectroscopy has been used to study the anticorrosion behaviour of the CVD grown graphene layer. The observed corrosion rate of 8.08 × 10−14 m/s for graphene-coated copper is 24 times lower than the value for pure copper which shows the potential of graphene as the anticorrosive layer. Furthermore, we observed no significant changes in anticorrosive behaviour of the graphene coated copper samples stored in ambient environment for more than one year.

Highlights

Corrosion is a naturally occurring phenomenon, which describes the tendency of a material to react with other chemicals resulting in deterioration of stability [1]
As factors such as coverage, layer numbers, and defects can affect the anticorrosive ability of graphene, we optimized the growth parameter before the corrosion test
Graphene films were grown by evaporating ethanol in a chemical vapour deposition (CVD) system, and we found that the films can serve as anti-corrosive layers

Summary

Introduction

Corrosion is a naturally occurring phenomenon, which describes the tendency of a material to react with other chemicals resulting in deterioration of stability [1]. A feasible method to reduce the corrosion damage is by coating the metal with a stable and anticorrosive layer. Those traditional protective coatings, including organic layers [2–4], polymers coating [5,6], oxide layers [7], and inert metals [8] have their limitations. The high thickness is necessary for traditional anticorrosive layers to ensure protective effects [9–12]. Some organic or polymers coatings such as epoxy coating can rapidly age under high temperature [13]. It is in high demand to solve the corrosion problems by exploiting new chemically inert protective coating materials

Methods

Results

Conclusion