School of Biosystems Engineering and Food Science, Zhejiang University, 866 Yuhangtang Road, Hangzhou, 310058, P. R. China.
Small. 2021 Feb;17(8):e2007805. doi: 10.1002/smll.202007805. Epub 2021 Feb 1.
The durability issue of triboelectric nanogenerators (TENGs) still limits its practical application for long-term operation, especially in harvesting water energy, which is one of the most widespread energies in nature. Attempting to ameliorate this, fluorinated graphene (FG) with unique triboelectric negativity and superhydrophobic property is introduced to serve as a new triboelectric and protective layer for TENG construction. The self-cleaning as well as anti-corrosion property and durability of the FG coating-enabled TENG device is then demonstrated. Furthermore, this novel triboelectronegative material candidate is applied for consecutively coating on Cu mesh and the inner wall of sewage pipe to fabricate TENGs for water energy harvesting and working as a metal protective layer in the meantime. Through the extraordinary output performance, the feasibility of FG-enabled triboelectric coating to be used in the field of interference screening, filtering, and sewage pipes is proved. This developed triboelectronegative coating not only broadens the material selection of TENG but also significantly enhances the durability and robustness of TENG for water energy harvesting, which possesses great potential in applying in metal protection and water energy harvesting under extreme conditions (e.g., strong acid and strong alkaline environments).
摩擦纳米发电机（TENG）的耐久性问题仍然限制了其在长期运行中的实际应用，特别是在收集水能方面，水能是自然界中最广泛存在的能量之一。为了改善这一问题，具有独特摩擦电负性和超疏水性的氟化石墨烯（FG）被引入作为 TENG 构建的一种新型摩擦电和保护层。然后，展示了具有自清洁、耐腐蚀和耐用性的 FG 涂层 TENG 器件。此外，将这种新型摩擦负性材料候选物应用于连续涂覆在铜网和污水管的内壁上，以制造用于水能收集的 TENG 并同时用作金属保护层。通过卓越的输出性能，证明了 FG 摩擦电涂层在干扰屏蔽、过滤和污水管领域的应用是可行的。这种开发的摩擦负性涂层不仅拓宽了 TENG 的材料选择，而且显著提高了 TENG 用于水能收集的耐久性和鲁棒性，在极端条件（例如强酸和强碱环境）下的金属保护和水能收集方面具有巨大的应用潜力。
