Enhancement of Triboelectric Charge Density by Chemical Functionalization,Advanced Functional Materials

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Enhancement of Triboelectric Charge Density by Chemical Functionalization
Advanced Functional Materials ( IF 18.5 ) Pub Date : 2020-09-09 , DOI: 10.1002/adfm.202004714
Yanhua Liu _{1,

2} , Jilong Mo _{1,

2} , Qiu Fu _{1,

2} , Yanxu Lu _{1,

2} , Ni Zhang _{1,

2} , Shuangfei Wang _{1,

2} , Shuangxi Nie _{1,

2}

Affiliation

A triboelectric nanogenerator (TENG) can convert energy in the surrounding environment to electricity. Therefore, in recent years, research related to TENGs has significantly increased owing to its simple and low‐cost manufacturing process, high portability, and high efficiency. The principle of the TENG lies in the coupling effect of contact electrification and electrostatic induction. Its output performance is directly proportional to the square of the surface charge density, which is related to friction materials. To increase the output power of a TENG and continuously provide electricity for other electronic equipment, many scholars have conducted detailed studies on the triboelectric properties of materials. Particularly, there has been research interest in the chemical functionalization of TENGs due to their unique advantages, such as high triboelectric charge density, durability, stability, and self‐cleaning properties. This Progress Report highlights the research progress in chemical modification methods for improving the charge density of TENGs, and classifies their modification methods according to their mechanisms. The effects of chemical reaction, surface chemical treatment, and chemical substance doping on the output performance of TENGs are systematically elaborated. Furthermore, the applications of chemically modified TENG in self‐powered sensors and emerging fields, including wearable electronic devices, human‐machine interfaces, and implantable electronic devices, are introduced. Lastly, the challenges faced in the future developments of chemical modification methods are discussed, thereby guiding researchers to the use of chemical modification methods for the improvement of charge density for further exploration.

中文翻译：

通过化学官能化提高摩擦电荷密度

摩擦电纳米发电机（TENG）可以将周围环境中的能量转换为电能。因此，近年来，由于TENGs的制造过程简单且成本低，可移植性高且效率高，与TENGs相关的研究已大大增加。TENG的原理在于接触带电和静电感应的耦合作用。它的输出性能与表面电荷密度的平方成正比，这与摩擦材料有关。为了增加TENG的输出功率并持续为其他电子设备供电，许多学者对材料的摩擦电性能进行了详细的研究。特别是，由于TENG的独特优势，人们对TENG的化学功能化产生了浓厚的兴趣，例如高摩擦电荷密度，耐用性，稳定性和自清洁特性。该进展报告重点介绍了用于改善TENGs电荷密度的化学修饰方法的研究进展，并根据其机理对它们进行了分类。系统地阐述了化学反应，表面化学处理和化学物质掺杂对TENGs输出性能的影响。此外，还介绍了化学修饰的TENG在自供电传感器和新兴领域中的应用，包括可穿戴电子设备，人机界面和可植入电子设备。最后，讨论了化学修饰方法未来发展中面临的挑战，

更新日期：2020-09-09

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