In this article, we delve into the fascinating world of electrodeposition and its potential for creating innovative coatings. Specifically, we explore the impact of adding silica nanoparticles to deep eutectic solvent (DES)-based electrolytes and the resulting interactions with residual water and deposited nickel.
The use of DES-based electrolytes has gained attention due to their eco-friendly nature, low cost, and stability. However, the presence of residual water in these electrolytes can lead to interesting phenomena during electrodeposition.
One key finding is the influence of residual water on the formation of nanostructured nickel coatings. At lower deposition potentials, residual water facilitates the growth of nanostructured nickel, while at higher potentials, it can lead to passivation due to nickel hydroxide precipitation. This delicate balance is crucial for achieving desirable coating properties.
Furthermore, the addition of silica nanoparticles to the electrolyte has a significant impact. Our research reveals that these nanoparticles interfere with the processes occurring on the cathode surface, reducing the amount of nickel hydroxide and oxide components. This interference could potentially enhance the coating's hardness and corrosion resistance, as suggested by previous studies.
Interestingly, we also observed a nickel chloride component on the surface of nickel coatings without silica nanoparticles. This component was not present in the presence of silica, suggesting a potential role of the nanoparticles in mitigating the formation of nickel chloride.
Our findings contribute to a growing body of knowledge on the environmental benefits of DES-based electrolytes. By understanding the intricate interactions between residual water, nanoparticles, and deposited nickel, we can further develop green approaches for fabricating durable and corrosion-resistant coatings.
In conclusion, this research highlights the exciting possibilities of electrodeposition and its potential to meet industry demands in sectors like automotive and aerospace. With further exploration, we can unlock the full potential of these innovative coatings and contribute to a more sustainable future.
