用于有机污染物自供电电化学降解的新型 3D 打印涡旋状柔性滚压式摩擦纳米发电机,ACS Applied Materials & Interfaces

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用于有机污染物自供电电化学降解的新型 3D 打印涡旋状柔性滚压式摩擦纳米发电机
ACS Applied Materials & Interfaces ( IF 8.3 ) Pub Date : 2022-04-08 , DOI: 10.1021/acsami.2c01750
Shizhe Liu ₁ , Yang Liu ₁ , Ye Chen ₁ , Shuaitong Wang ₂ , Chuanbin Men ₁ , Shuyan Gao ₁

Affiliation

这是使用摩擦纳米发电机 (TENG) 从环境中捕获能量以降解水中有机污染物作为零碳途径的理想方法。然而，迫切需要进一步开发结构简单、输出功率高的TENG。在此，借助熔融沉积建模 3D 打印技术，设计并制造了一种具有内定子涡旋状柔性自恢复叶片的新型 TENG（称为 VFR-TENG）。随着外转子的旋转，柔性自恢复叶片的交替布置实现了一种简单的旋转接触分离模式。摩擦层的接触紧密度是电荷密度转移的关键因素，可以通过柔性自恢复叶片的厚度和排列方式轻松调节。基于特殊的柔性结构，进一步研究了材料弹性和旋转频率对输出特性的调节。VFR-TENG 的瞬时短路电流为 350 μA，开路电压为 650 V，转移电荷为 1.1 μC，最佳输出功率密度为 4.4 W·m^–2。这种高性能的 VFR-TENG 用于电化学降解系统，在 150 分钟内对亚甲蓝、甲基橙和孔雀石绿的降解效率分别为 88.9%、91.7% 和 94.1%。该工作为柔性自恢复接触分离TENGs的设计提供了新思路，对开发兼具高峰值电流和高频特性的TENGs进行高效水处理具有重要启示。

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Novel 3D Printed Vortex-like Flexible Roller-Compacted Triboelectric Nanogenerator for Self-Powered Electrochemical Degradation of Organic Contaminants

It is an ideal way to use triboelectric nanogenerators (TENGs) to capture energy from the environment for the degradation of organic contaminants in water as a zero-carbon pathway. However, there is an urgent need to further develop TENGs with a simple structure and high output power. Herein, a novel TENG with a vortex-like flexible self-recovery blades of inner stator (denoted as VFR-TENG) is designed and manufactured with the assistance of a fused deposition modeling 3D printing technology. With the rotation of the outer rotor, a facile rotating contact–separation mode is achieved by the alternating arrangement of the flexible self-recovery blades. The contact tightness of the friction layer, a key factor for the transfer of charge density, can be easily adjusted by the thickness and arrangement style of the flexible self-recovery blades. The regulation of material elasticity and rotational frequency on the output characteristics is further investigated based on the special flexible structure. The VFR-TENG exhibits an instantaneous short-circuit current of 350 μA, an open-circuit voltage of 650 V, a transferred charge of 1.1 μC, and an optimum output power density of 4.4 W·m^–2. This high-performance VFR-TENG is used for electrochemical degradation systems, which achieves excellent degradation efficiencies of 88.9, 91.7, and 94.1% for methylene blue, methyl orange, and malachite green within 150 min, respectively. This work provides a new idea for the design of flexible self-recovery contact–separation TENGs, which is of great inspiration for the exploitation of TENGs with both the high peak current and high-frequency characteristics for efficient water treatment.

更新日期：2022-04-08

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