Kwak Min Sub, Park Yong-Jin, Kim Minsoo P, Ko Hyunhyub
School of Energy and Chemical Engineering, Ulsan National Institute of Science and Technology, Ulsan 689-798, Republic of Korea.
Department of Chemical Engineering, Sunchon National University, Suncheon 57922, Republic of Korea.
ACS Appl Mater Interfaces. 2025 Jul 2;17(26):37336-37352. doi: 10.1021/acsami.5c03133. Epub 2025 Jun 16.
With the growing demand for sustainable energy solutions and self-powered sensing devices, triboelectric nanogenerators (TENGs) have gained considerable attention due to their ability to efficiently convert mechanical energy into electricity with the advantages of simple structure and cost-effectiveness. Among several key factors affecting the performance of TENGs, interfacial polarization has emerged as a promising route to enhance surface charge density and triboelectric output. This perspective discusses the principles of interfacial polarization in dielectric-based TENGs and explores four key strategies for leveraging interfacial polarization to improve triboelectric device efficiency. First, we examine how controlled polymer chain alignment and dipole orientation at material interfaces create optimized pathways for charge transfer. Second, we introduce engineered nanostructures and strategic material compositions that amplify local electric fields through enhanced interfacial polarization effects. Third, we highlight the impact of layered architectures with precisely controlled phase boundaries, enabling superior charge accumulation at interfaces. Fourth, we discuss how systematic optimization of bulk material properties and device geometries contributes to improved overall device efficiency. By integrating these approaches, we establish comprehensive design principles for maximizing interfacial polarization in triboelectric devices. Additionally, we highlight emerging applications enabled by controlled polarization, including self-powered sensors, wearable electronics, and energy harvesting systems. Finally, we address key challenges in understanding and controlling interfacial phenomena, and propose future research directions for next-generation TENGs through interfacial engineering.
随着对可持续能源解决方案和自供电传感设备需求的不断增长，摩擦纳米发电机（TENGs）因其能够将机械能高效转化为电能且具有结构简单和成本效益高的优点而备受关注。在影响TENG性能的几个关键因素中，界面极化已成为提高表面电荷密度和摩擦电输出的一条有前景的途径。本文探讨了基于电介质的TENG中界面极化的原理，并探索了利用界面极化提高摩擦电器件效率的四个关键策略。首先，我们研究了材料界面处受控的聚合物链排列和偶极取向如何为电荷转移创造优化路径。其次，我们介绍了通过增强界面极化效应来放大局部电场的工程纳米结构和策略性材料组成。第三，我们强调了具有精确控制相界的层状结构的影响，这种结构能够在界面处实现卓越的电荷积累。第四，我们讨论了如何对块状材料特性和器件几何形状进行系统优化以提高器件整体效率。通过整合这些方法，我们建立了使摩擦电器件中的界面极化最大化的综合设计原则。此外，我们突出了由受控极化实现的新兴应用，包括自供电传感器、可穿戴电子产品和能量收集系统。最后，我们阐述了在理解和控制界面现象方面的关键挑战，并通过界面工程为下一代TENG提出未来研究方向。
