Modulation of titanium dioxide/graphene interface by Mg2+ doping: Titanium dioxide coatings with conductive, corrosion-resistant and superhydrophobic features

Ze Liu, Kexin Zhou, Junbo Wang, Chong Peng, Yun Li, Shuyi Yang and Tao E

Energy, 2025, vol. 317, issue C

Abstract: Conductive coatings show great application potential in the fields of electronic devices, energy storage and conversion, and primers for new energy vehicles, but their performance bottlenecks such as corrosion resistance, hydrophobicity, and dispersibility limit their wide applications. In order to solve these problems, this paper innovatively proposes a conductive coating (Mg-TG) composite of titanium dioxide and graphene via Mg2+ modification in the acetic acid system. By precisely modulating the doping amount of Mg2+, the electronic structure and physical properties of titanium dioxide are significantly optimised, and an efficient conductive network is formed with graphene, successfully constructing a high-performance composite powder with a low resistivity as low as 0.083 Ω cm. Advanced characterisation techniques (XPS) and density-functional-theoretic calculations (DFT) indicate that the formation of defective engineering activates lattice oxygens, leading to electronic structure modulation and material valence bonding changes, thus constructing efficient electron transport channels (Ti-O-C, Mg-O-C) and ensuring uniform distribution and fast electron circulation in the coating. In addition, through the Tafel curve test, water contact angle test (WCA) and coating experiments, it was demonstrated that the Mg2+ modification effectively improved the corrosion resistance, hydrophobicity and dispersibility of the material. In this way, the coating not only effectively resists the ability of corrosive media and extends its service life, but also maintains stable electrical properties in humid environments and avoids performance degradation due to moisture penetration. At the same time, the modification of Mg2+ also promotes the uniform dispersion of the material and improves the activity and stability of the coating, laying a solid foundation for efficient performance in a variety of application scenarios.

Keywords: Mg2+ doping; Graphene; Coating; Electrical conductivity; First-principles computation (search for similar items in EconPapers)
Date: 2025
References: Add references at CitEc
Citations:

Downloads: (external link)
http://www.sciencedirect.com/science/article/pii/S0360544225003081
Full text for ScienceDirect subscribers only

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:eee:energy:v:317:y:2025:i:c:s0360544225003081

DOI: 10.1016/j.energy.2025.134666

Access Statistics for this article

Energy is currently edited by Henrik Lund and Mark J. Kaiser

More articles in Energy from Elsevier
Bibliographic data for series maintained by Catherine Liu ().