Carbon composites for electromagnetic interference shielding: Progress, challenges and perspective

Abstract

The exponential growth of electronic devices, satellite technology, and wireless communication has significantly increased electromagnetic (EM) pollution, leading to widespread electromagnetic interference (EMI). Therefore, there is an urgent need for high-performance, environmentally friendly EMI shielding materials to protect both electronic systems and human well-being. This article highlights the importance of developing high-performance EMI shielding materials through intelligent micro- and nano-structural engineering and careful compositional tuning, with a focus on the innovative strategies enabled by carbon composites. It provides an in-depth discussion of the preparation methods for carbon foams and carbon fiber composites aiming to achieve high EMI shielding performance. This article aims to provide valuable insights and inspiration to researchers in related fields, promoting the collective advancement of research and practical applications of carbon composites for EMI shielding across a broad frequency range. The multifunctionality of carbon composites such as carbon foams and carbon fiber composites has strong potential in the field of aerospace, electronics, defense, and stealth technologies due to their high electrical conductivity, lightweight nature, heat dissipation ability, fire resistance, moisture insensitivity, and tunable mechanical properties.