Recent advances in aerogel-based triboelectric nanogenerators: Working principles, fabrication strategies, performance optimization, and applications

Abstract

Aerogel-based triboelectric nanogenerators (TENGs) have attracted considerable attention due to their lightweight structure, tunable dielectric properties, and exceptional energy output performance. This review systematically summarizes recent advances in aerogel-based TENGs, including their fundamental principles, fabrication methods, performance optimization strategies, and diverse applications. First, the distinctive advantages and working mechanisms of aerogel-based TENGs are introduced, followed by a comprehensive discussion of preparation methods (including sol-gel processing, electrospinning, and 3D printing) and performance optimization strategies based on different aerogel compositions. Meanwhile, the applications of aerogel-based TENGs in energy harvesting, human-motion monitoring, health monitoring, environmental monitoring, human-machine interaction, and other related fields are discussed. In addition, the challenges and future development prospects of aerogel-based TENGs are also envisioned, aiming to promote their continued advancement. We believe this comprehensive review will be helpful to inspire the design and fabrication of multifunctional aerogels for advanced TENGs.