PDF(Pubmed)
Abstract：
Triboelectric nanogenerators (TENGs) show promising potential in energy harvesting and sensing for various electronic devices in multiple fields. However, the majority of materials currently utilized in TENGs are unrenewable, undegradable, and necessitate complex preparation processes, resulting in restricted performance and durability for practical applications. Here, we propose a strategy that combines straightforward chemical modification and electrospinning techniques to construct all-cellulose nanofiber-based TENGs with substantial power output. By using cellulose acetate (CA) as the raw material, the prepared cellulose membranes (CMs) and fluorinated cellulose membranes (FCMs) with different functional groups and hydrophobic properties are applied as the tribopositive and tribonegative friction layers of FCM/CM-based triboelectric nanogenerators (FC-TENGs), respectively. This approach modulates the microstructure and triboelectric polarity of the friction materials in FC-TENGs, thus enhancing their triboelectric charge densities and contact areas. As a result, the assembled FC-TENGs demonstrate enhanced output performance (94 V, 8.5 µA, and 0.15 W/m2) and exceptional durability in 15,000 cycles. The prepared FC-TENGs with efficient energy harvesting capabilities can be implemented in practical applications to power various electronic devices. Our work strengthens the viability of cellulose-based TENGs for sustainable development and provides novel perspectives on the cost-effective and valuable utilization of cellulose in the future.
摘要：
摩擦电纳米发电机（TENG）在多个领域的各种电子设备的能量收集和传感方面显示出很有前途的潜力。然而,目前在TENG中使用的大多数材料是不可再生的，不可降解,并需要复杂的制备过程，导致限制的性能和耐久性的实际应用。这里,我们提出了一种策略，结合简单的化学修饰和静电纺丝技术来构建具有大量功率输出的基于全纤维素纳米纤维的TENG。以醋酸纤维素(CA)为原料,制备的具有不同官能团和疏水性的纤维素膜（CM）和氟化纤维素膜（FCM）用作基于FCM/CM的摩擦电纳米发电机（FC-TENG）的摩擦正摩擦层和摩擦层，分别。这种方法调制了FC-TENG中摩擦材料的微观结构和摩擦电极性，从而提高它们的摩擦电荷密度和接触面积。因此,组装的FC-TENG展示了增强的输出性能(94V，8.5µA,和0.15W/m2）以及15,000次循环的出色耐用性。所制备的具有有效能量收集能力的FC-TENG可以在实际应用中实现以对各种电子设备供电。我们的工作加强了纤维素基TENGs对可持续发展的可行性，并为未来纤维素的成本效益和有价值的利用提供了新的观点。
