独特的接触点修改技术,以提高三电纳米发电机的性能,以及其在道路安全传感和检测中的应用
Siju Mishra1, Muddamalla Rakshita1, Haranath Divi1
1Energy Materials and Devices Laboratory, Department of Physics, National Institute of Technology, Warangal, Warangal 506 004, India.
ACS applied materials & interfaces
|June 29, 2023
概括
这项研究引入了一种新的表面修改,用于使用激光打印机增强能量转换的 triboelectric 纳米发电机 (TENGs). 改进的TENG设计显著提高了输出电压和电流,使得道路安全传感器等实际应用成为可能.
科学领域:
- 材料科学 材料科学 材料科学
- 收集能源 收集能源
- 纳米技术纳米技术
背景情况:
- 三电纳米发电机 (TENGs) 通过接触式静电感应将机械能量转化为电能.
- 现有的TENG经常因接触面积不足和工作功能的差异而面临输出功率和效率的限制.
- 提高TENG性能的可扩展和具有成本效益的方法对于实际的能源采集应用至关重要.
研究的目的:
- 通过增加 triboelectric 层的有效表面积来开发 TENG 的新型接触点修改技术.
- 研究使用激光打印机的表面工程对TENG性能的影响,包括输出电压,电流和功率密度.
- 展示增强型TENG在现实应用中的潜力,例如道路安全传感.
主要方法:
- 使用硫化物 (ZnS) 纳米结构在电极上作为积极的 triboelectric 层通过修改的热水方法制造TENG.
- 使用单色激光打印机,在空投 (OHP) 透明板上应用不同的线条图案作为负 triboelectric 层.
- 增强型TENG的电力输出 (开通电压,短路电流) 和能量转换效率的表征.
主要成果:
- 表面修改技术导致开通电路电压增加了约11倍 (高达~420V),短路电流密度增加了17倍 (高达~83.33 mA m-2).
- 在2 MΩ的负载阻力下,实现了~3.9 W m-2的超高即时输出功率密度.
- 直接能量转换效率高达66.67%,明显超过传统的TENG.
结论:
- 提出的基于激光打印的表面工程方法通过优化接触面积和工作功能,有效地提高了TENG的性能.
- 制造的TENG表现出高效率和输出功率,使其适合先进的能源采集.
- 在实际应用方面,TENG显得有前途,包括在具有挑战性的地形上用于车辆控制的创新道路安全传感系统.
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