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Anisotropic Triboelectric Nanogenerator Based on Ordered Electrospinning.
Ning Wang1, Xiao-Xiong Wang1, Kang Yan1
1Collaborative Innovation Center for Nanomaterials & Devices, College of Physics, Qingdao University, Qingdao 266071, China.
ACS Applied Materials & Interfaces
|September 16, 2020
Summary
This study introduces an ordered polymer nanofiber nanogenerator to prevent electrostatic discharge (ESD) risks. The anisotropic design offers enhanced mechanical properties and a simple 90° rotation to avoid circuit burnout in wearable applications.
Area of Science:
- Materials Science
- Energy Harvesting
- Nanotechnology
Background:
- Nanogenerators convert environmental energy into electrical energy, offering flexibility for small systems.
- Triboelectric nanogenerators (TENGs) are notable for high energy density but risk electrostatic discharge (ESD) due to static charge accumulation.
- Existing TENGs face challenges with static charge buildup, potentially damaging nearby circuits.
Purpose of the Study:
- To develop an anisotropic triboelectric nanogenerator (TENG) using ordered polymer nanofibers.
- To mitigate the risk of electrostatic discharge (ESD) in TENG devices.
- To enhance mechanical properties and provide a method for safe storage of TENGs.
Main Methods:
- Electrospinning technology was employed to create ordered polymer nanofibers.
- An anisotropic TENG structure was fabricated using these nanofibers.
- The effective contact area was adjusted to control voltage output in different directions.
- A 90° rotation mechanism was proposed for safe storage and ESD prevention.
Main Results:
- The ordered nanofiber TENG exhibited improved tensile properties and mechanical strength compared to disordered TENGs.
- Anisotropic voltage output was achieved, with longitudinal direction output one order of magnitude higher than lateral.
- A 90° rotation effectively prevents static charge accumulation when the device is not in use.
Conclusions:
- The developed anisotropic TENG effectively addresses ESD risks associated with triboelectric nanogenerators.
- Ordered polymer nanofibers enhance mechanical performance and enable directional voltage control.
- The simple 90° rotation offers a practical solution for preventing circuit burnout in wearable electronic applications.
