相关实验视频

Updated: Jun 11, 2025

Preparation of ZnO Nanorod/Graphene/ZnO Nanorod Epitaxial Double Heterostructure for Piezoelectrical Nanogenerator by Using Preheating Hydrothermal

Preparation of ZnO Nanorod/Graphene/ZnO Nanorod Epitaxial Double Heterostructure for Piezoelectrical Nanogenerator by Using Preheating Hydrothermal

Published on: January 15, 2016

基于三电效应的聚乙烯醇基纳米发电机的机制和性能研究

Wuliang Sun^1,2, Junhui Dong¹, Xiaobo Gao³

¹School of Materials Science and Engineering, Inner Mongolia University of Technology, Hohhot 010051, China.

Materials (Basel, Switzerland)

|September 28, 2024

概括

聚乙烯醇 (PVA) 和聚四乙烯 (PTFE) 显示出对 triboelectric纳米发电机 (TENGs) 的巨大潜力. 它们的分子相互作用为自动供电的智能设备带来了高性能.

科学领域:

材料科学材料科学材料科学
纳米技术纳米技术
三电纳米发电机 (TENGs) 的使用

背景情况:

聚乙醇 (PVA) 是一种广泛使用的聚合物,在 triboelectric纳米发电机 (TENG) 应用中探索有限.
了解分子级接触电气化对于推进TENG技术至关重要.

研究的目的:

在分子层面研究PVA的接触电气化机制.
通过与聚乙烯 (PE),聚乙烯化物 (PVDF) 和聚四乙烯 (PTFE) 进行比较,评估PVA在TENG中的潜力.
探索基于PVA的TENG在自动供电设备中的应用.

主要方法:

对PVA,PE,PVDF和PTFE的电子特性 (带间距,HOMO-LUMO水平) 的比较分析.
研究聚合物-聚合物接触期间的电子转移机制,重点研究分子功能组.
使用PVA和PTFE进行TENGs的实验制造和性能测试.

主要成果:

在测试的聚合物中,PVA 具有最高的带隙.
最小的带间隙发生在PVA的HOMO和PTFE的LUMO之间,促进了高效的电子传输.
接触PVA和PTFE导致TENG的开放电路电压 (VOC) 为128V,短路电流 (ISC) 为2.83μA,输出功率为384μW.
在PTFE中存在原子显著增强了与PVA的电子转移.

结论:

聚乙烯是TENG应用的一个有前途的材料,特别是与PTFE配对时.
该研究为优化TENG性能提供了对接触电气化的分子层面见解.
基于PVA/PTFE的TENG是有效的为智能设备提供动力和监控生理运动.

关键词:

接触电气化的电气化聚乙烯酒精的使用情况带电纳米发电机的 triboelectric 的使用.

更多相关视频

A Polymer-based Piezoelectric Vibration Energy Harvester with a 3D Meshed-Core Structure

A Polymer-based Piezoelectric Vibration Energy Harvester with a 3D Meshed-Core Structure

Published on: February 20, 2019

Vapor Phase Deposition of Electroactive Poly(3,4-ethylenedioxythiophene) onto Electrospun Commodity Polymer Nanofibers

Vapor Phase Deposition of Electroactive Poly(3,4-ethylenedioxythiophene) onto Electrospun Commodity Polymer Nanofibers

Published on: March 7, 2025

相关概念视频

Van de Graaff Generator

Van de Graaff Generator

Van de Graaff generators (or Van de Graaffs) are devices used to demonstrate high voltage due to static electricity that can also be used for research. Robert Van de Graaff first built one in 1931 (based on original suggestions by Lord Kelvin) for use in nuclear physics research.
Van de Graaff uses both smooth and pointed surfaces, conductors, and insulators to generate large static charges and, hence, large voltages. A substantial excess charge can be deposited on the sphere because it moves...

DC Generator

DC Generator

An alternator converts mechanical energy into electrical energy that varies sinusoidally, resulting in AC current. Meanwhile, a DC generator converts mechanical energy into electrical energy, which are DC pulses with the same polarity. The construction of a DC generator is similar to that of an alternator, except that the pair of slip rings is replaced by a single split ring, also called a commutator. The commutator functions like a periodic rotary switch; it changes the contacts with the...

Electric Generator: Alternator

Electric Generator: Alternator

Electric generators induce an emf by rotating a coil in a magnetic field. A simple alternator is an AC generator that creates electrical energy that varies sinusoidally with time. A simple alternator consists of a conducting loop that is placed inside a uniform magnetic field. The loop is connected to split rings connected to the external circuit with the help of brushes.
The magnetic flux passing through the coil varies sinusoidally as the loop rotates inside the magnetic field. This...