Related Experiment Video
Updated: Dec 30, 2025

Evaluating the Electrochemical Properties of Supercapacitors using the Three-Electrode System
Published on: January 7, 2022
2.6 V aqueous symmetric supercapacitors based on phosphorus-doped TiO2 nanotube arrays
Yaxiong Zhang1, Shifang Duan2, Yan Li1
1School of Physical Science and Technology, Lanzhou University, Lanzhou 730000, China. zhangzx@lzu.edu.cn and Key Laboratory for Magnetism and Magnetic Materials of the Ministry of Education, Lanzhou University, Lanzhou 730000, China.
Abstract:
Increasing the voltage window of an electrode material is effective for improving the energy density of aqueous symmetric supercapacitors. Herein, a novel aqueous symmetric supercapacitor equipped with a high cell voltage window of 2.6 V was assembled by P-doped TiO2 nanotube arrays on a Ti sheet. The arrays exhibit a wide potential range of about 1.2 V as the cathode, and a stable wide potential range of 1.4 V as the anode was also obtained. These wide potential windows in the cathode and anode render the symmetric supercapacitor with a very large working voltage window reaching 2.6 V, and thus a high volumetric energy density (1.65 mW h cm-3). These results suggest that P-doped TiO2 nanotube arrays can be promising candidates for energy storage devices.
More Related Videos
08:59Synthesizing a Gel Polymer Electrolyte for Supercapacitors, Assembling a Supercapacitor Using a Coin Cell, and Measuring Gel Electrolyte Performance
Published on: November 30, 2022
14:37Ambient Method for the Production of an Ionically Gated Carbon Nanotube Common Cathode in Tandem Organic Solar Cells
Published on: November 5, 2014
Related Concept Videos
MOS Capacitor
The metal gate is typically made from highly conductive materials such as aluminum or polysilicon. Beneath the metal gate lies a thin layer of...
Capacitor With A Dielectric
Dielectrics are non-conducting materials with no free or loosely bound electrons. When a dielectric is...
Energy Stored in a Capacitor
Energy Stored in Capacitors
By integrating the equation that relates voltage and current in a capacitor, one can derive an equation for the voltage across the capacitor at any given time. This equation is crucial in understanding and predicting the behavior of capacitors in...
Energy Stored in a Capacitor: Problem Solving
Capacitor-discharge ignition is a type of ignition system commonly found in small engines where the energy released from a capacitor ignites an induction coil that, in turn, fires the spark plug.
To calculate the energy stored in a capacitor of...
Dielectric Polarization in a Capacitor