相关实验视频

Updated: May 10, 2026

Evaluating the Electrochemical Properties of Supercapacitors using the Three-Electrode System
12:00

Evaluating the Electrochemical Properties of Supercapacitors using the Three-Electrode System

Published on: January 7, 2022

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作为超级电容器的电极材料的柔性,自承载的PVA/硫酸/聚烯复合电膜

Mengzhen Yan1, Siyi Jia1, Weifeng Liu1,2,3

  • 1School of Chemistry and Chemical Engineering, Guangdong Provincial Key Lab of Green Chemical Product Technology, State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou, 510640, P. R. China.

ChemSusChem
|September 1, 2025
PubMed
概括

研究人员使用聚乙醇/硫酸盐 (PVA/LS) 和聚烯 (PPy) 开发了灵活的导电材料. 一种堆叠方法显著提高了超级电容器的性能,实现了储能设备的高面积容量.

关键词:
电旋转聚烯聚乙烯醇硫酸盐超级电容器

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Capacitor With A Dielectric01:18

Capacitor With A Dielectric

Parallel plate capacitors consist of two conducting plates separated by a certain distance. However, it is mechanically difficult to hold the large plates parallel to each other without actual contact. Hence, a dielectric layer is commonly placed between the plates, which provides an easy solution for holding the plates together with a small gap and increases the capacitance of the capacitor.
Dielectrics are non-conducting materials with no free or loosely bound electrons. When a dielectric is...
Dielectric Polarization in a Capacitor01:31

Dielectric Polarization in a Capacitor

The presence of a dielectric medium in a capacitor not only changes the voltage and capacitance but also affects the electric field. In general, dielectrics can be of two types: polar and nonpolar. In a polar dielectric, the positive and negative charges in the molecules are separated by a distance and hence have a permanent dipole moment. In contrast, no such charge separation exists in a nonpolar dielectric, however the nonpolar molecules get polarized in the presence of an external electric...