Fabrication of Advanced Cellulosic Triboelectric Materials via Dielectric Modulation

摩擦电效应 电介质 材料科学 制作 数码产品 纤维素乙醇 纳米技术 工程物理 光电子学 纤维素 电气工程 复合材料 工程类 病理 医学 化学工程 替代医学
作者
Guoli Du,Jinlong Wang,Yanhua Liu,Jinxia Yuan,Tao Liu,Chenchen Cai,Bin Luo,Siqiyuan Zhu,Zhiting Wei,Shuangfei Wang,Shuangxi Nie
出处
期刊:Advanced Science [Wiley]
卷期号:10 (15) 被引量:93
标识
DOI:10.1002/advs.202206243
摘要

The rapid rise of triboelectric nanogenerators (TENGs), which are emerging energy conversion devices in advanced electronics and wearable sensing systems, has elevated the interest in high-performance and multifunctional triboelectric materials. Among them, cellulosic materials, affording high efficiency, biodegradability, and customizability, are becoming a new front-runner. The inherently low dielectric constant limits the increase in the surface charge density. However, owing to its unique structure and excellent processability, cellulose shows great potential for dielectric modulation, providing a strong impetus for its advanced applications in the era of Internet of Things and artificial intelligence. This review aims to provide comprehensive insights into the fabrication of dielectric-enhanced cellulosic triboelectric materials via dielectric modulation. The exceptional advantages and research progress in cellulosic materials are highlighted. The effects of the dielectric constant, polarization, and percolation threshold on the charge density are systematically investigated, providing a theoretical basis for cellulose dielectric modulation. Typical dielectric characterization methods are introduced, and their technical characteristics are analyzed. Furthermore, the performance enhancements of cellulosic triboelectric materials endowed by dielectric modulation, including more efficient energy harvesting, high-performance wearable electronics, and impedance matching via material strategies, are introduced. Finally, the challenges and future opportunities for cellulose dielectric modulation are summarized.
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