Wu Han, Hu Zhen, Li Jun, Liu Liqiang, Wang Jingxia, Zhang Jing, Ou-Yang Wei
Department of Electronic Science and Technology, College of Electronic and Information Engineering, Tongji University, Shanghai 201804, China.
Radiation Chemistry Department, Sichuan Institute of Atomic Energy, Chengdu 610101, China.
Nano Lett. 2024 May 8;24(18):5662-5668. doi: 10.1021/acs.nanolett.4c01365. Epub 2024 Apr 29.
The sensitivity of triboelectric nanogenerators (TENGs) to the surface charge density highlights the significance of triboelectric materials and their modifications. Efforts have been directed toward developing effective strategies for increasing the surface charge density, expanding the potential applications of TENGs. This study proposes the use of irradiation technology for grafting to modify the electron-donating capability of poly(ether sulfone) (PES), thereby affording a dual benefit of enhancing the surface charge density and inducing a shift in the position of PES from negative to positive within the triboelectric series. The TENG based on grafted PES has resulted in a significant 3-fold increase in surface charge density compared to that of pristine PES, reaching 263 μC m. The surface charge density can be further increased to 502 μC m through charge pumping. Notably, irradiation technology presents advantages over chemical grafting methods, particularly in terms of sustainability and environmental friendliness. This innovative approach shows great potential in advancing the domain of TENGs.
摩擦电纳米发电机（TENGs）对表面电荷密度的敏感性凸显了摩擦电材料及其改性的重要性。人们一直致力于开发提高表面电荷密度的有效策略，以拓展TENGs的潜在应用。本研究提出利用辐照技术进行接枝改性聚醚砜（PES）的供电子能力，从而带来双重益处，即提高表面电荷密度，并使PES在摩擦电序列中的位置从负向正发生偏移。与原始PES相比，基于接枝PES的TENG表面电荷密度显著提高了3倍，达到263 μC/m²。通过电荷泵浦，表面电荷密度可进一步提高到502 μC/m²。值得注意的是，辐照技术相对于化学接枝方法具有优势，特别是在可持续性和环境友好性方面。这种创新方法在推进TENGs领域方面显示出巨大潜力。
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