Largely Enhanced Output of the Non-Contact Mode Triboelectric Nanogenerator via a Charge Excitation Based on a High Insulation Strategy

作者：Lei, Rui; Li, Shuyao; Shi, Yuxiang; Yang, Peng; Tao, Xinglin; Zhai, Hua^*; Wang, Zhong Lin; Chen, Xiangyu^*

来源：Advanced Energy Materials, 2022, 12(40): 2201708.

DOI：10.1002/aenm.202201708

• charge density
• non-contact mode
• self-excitation
• triboelectric nanogenerators

The non-contact triboelectric nanogenerator (TENG) based on floating plane motion can achieve a very low interface abrasion and high durability. However, the output performance of non-contact TENG is still less than 72 mu C m(-2), due to the decay of tribo-induced charges in air. Here, this work proposes two different charge excitation strategies for non-contact mode TENG by elevating the electric insulation strength to avoid air breakdown, while both the external charge excitation and the self-excitation system are developed. A double dielectric layer capacitance model is also established to analyze the change of charge density. A maximum output charge density of 260.15 mu C m(-2) is obtained using the external charge excitation with 6 kV excitation voltage. In addition, the self-excitation strategy with non-contact mode and more compact system is also demonstrated and an output charge density of 212.5 mu C m(-2) is achieved with the help of developed voltage multiple circuit, which is 2.97 times of the reported highest record for non-contact TENG. The charge-excited TENG via high electric insulation strategy realized in this work provides a promising way for boosting the output performance of TENGs.

• 单位
  中国科学院研究生院