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Updated: May 31, 2026

Graphene Coatings for Biomedical Implants

Graphene Coatings for Biomedical Implants

Published on: March 1, 2013

Bio-inspired Multifunctional Graphene-Epoxy Anticorrosion Coatings by Low-Defect Engineered Graphene.

Jiheng Ding¹, Hongran Zhao¹, Haibin Yu¹

¹Key Laboratory of Marine Materials and Related Technologies, Zhejiang Key Laboratory of Marine Materials and Protective Technologies, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, University of Chinese Academy of Sciences, Ningbo 315201, China.

|January 7, 2022

Summary

This study developed a bio-inspired graphene-epoxy coating using a spraying method. The novel coating significantly enhances metal protection with improved graphene dispersion and reduced defects, offering superior anticorrosion properties.

Keywords:

anticorrosion epoxy coating low-defect engineered graphene nacre-like structure thermal and electrical conductivities

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Published on: July 3, 2025

Area of Science:

Materials Science
Corrosion Science
Nanotechnology

Background:

Graphene is an ideal anticorrosion filler but faces challenges like poor dispersion and defects.
Existing graphene-epoxy coatings struggle with uniform distribution and structural integrity.
These limitations hinder graphene's application in effective metal protection.

Purpose of the Study:

To fabricate a high-performance graphene-epoxy composite coating with enhanced anticorrosion properties.
To address issues of graphene dispersion, structural defects, and galvanic corrosion.
To create a bio-inspired, multilayered coating system using a scalable spraying approach.

Main Methods:

Fabrication of a multilayered graphene-epoxy composite coating via scalable spraying.
Utilizing polydopamine as an enforcer to improve graphene dispersion and repair defects.
Employing electrochemical tests to evaluate coating resistance and performance.

Main Results:

The bio-inspired composite coating demonstrated a significant increase in coating resistance (3.0 × 10^9 Ω cm^2).
Polydopamine facilitated "interlock" structures, ensuring dense graphene and epoxy layers with strong adhesion.
The coating exhibited highly anisotropic thermal and electrical conductivities, enabling self-monitoring capabilities.

Conclusions:

The bio-inspired strategy effectively overcomes graphene dispersion and defect issues for metal protection.
The developed composite coating offers superior anticorrosion performance compared to blank and blended coatings.
This approach provides a novel method for creating functional graphene composite coatings with self-monitoring properties.