Triboelectric nanogenerator based on electrospun molecular ferroelectric composite nanofibers for energy harvesting†

Swati Deswal, Shima Arab, Nanfei He, Wei Gao, Bongmook Lee and Veena Misra
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Abstract

Ceramic-based ferroelectric materials have long been used as functional ferroelectric materials for applications in triboelectric-energy harvesting. However, their drawbacks (brittleness, energy-intensive fabrication methods, and minimal mechanical flexibility) have intensified the search for alternatives where flexible form factors are needed. Molecular ferroelectrics are an emerging class of multifunctional materials. To date, the intriguing piezo/ferroelectric properties of these materials have led to the construction of piezoelectric nanogenerators. However, their numerous advantages warrant their expansion towards triboelectric nanogenerators (TENGs). We aimed to demonstrate the potential of a molecular ferroelectric, diisopropylammonium bromide (DIPAB), in the realm of triboelectric-energy harvesting. Combining ferroelectric properties with enhanced surface modification, we designed an electrospun-based TENG comprising DIPAB/P(VDF-TrFE) as an active negative layer. The synergistic effects emanating from highly aligned polymeric chains and ferroelectric particles in conjunction with a high surface area of the as-designed TENG generated an output voltage of 203.8 V and resulted in a maximum power density of 416.2 mW m−2 when operated in contact separation mode. Its practical application as a sustainable power supply for low-power electronics was demonstrated through powering of commercial electrolytic capacitors and LEDs. This study presents a reliable, cost-effective, and readily scalable method for enhancing TENG performance. This strategy holds potential for application of TENGs in wearable biomechanical-energy harvesting, and paves the way for further advances involving a sustainable energy solution for wearable electronics.

Abstract Image

基于电纺分子铁电复合纳米纤维的用于能量收集的三电纳米发电机†。
长期以来,陶瓷基铁电材料一直作为功能性铁电材料应用于三电能收集领域。然而,它们的缺点(脆性、能源密集型制造方法和最小的机械灵活性)加剧了对需要灵活外形的替代品的寻找。分子铁电是一类新兴的多功能材料。迄今为止,这些材料引人入胜的压电/铁电特性已导致压电纳米发电机的制造。然而,这些材料的众多优点证明它们有理由向三电纳米发电机(TENGs)扩展。我们的目标是证明分子铁电体--二异丙基溴化铵(DIPAB)在三电能量收集领域的潜力。我们将铁电特性与增强的表面改性相结合,设计了一种以 DIPAB/P(VDF-TrFE)为活性负极层的电纺基 TENG。高度排列的聚合物链和铁电粒子产生的协同效应,再加上所设计 TENG 的高表面积,在接触分离模式下产生了 203.8 V 的输出电压和 416.2 mW m-2 的最大功率密度。通过为商用电解电容器和 LED 供电,证明了它作为低功耗电子器件可持续电源的实际应用。这项研究提出了一种可靠、经济、可扩展的方法来提高 TENG 的性能。这一策略为 TENG 在可穿戴生物机械能收集领域的应用提供了潜力,并为进一步推动可穿戴电子设备的可持续能源解决方案铺平了道路。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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