Related Experiment Video
Updated: Aug 1, 2025
12:00
Evaluating the Electrochemical Properties of Supercapacitors using the Three-Electrode System
Published on: January 7, 2022
12.6K
Intrinsic Properties of GO/RGO Bilayer Electrodes Dictate Their Inter-/Intralayer Intractability to Modulate Their
Tamanna Islam1, Md Mahedi Hasan1, Subrata Sarker2
1Department of Chemistry, Jagannath University, Dhaka 1100, Bangladesh.
ACS Omega
|April 24, 2023
Summary
Researchers developed novel graphene oxide/reduced graphene oxide bilayer electrodes for supercapacitors. The GO/RGO electrodes demonstrate enhanced energy storage, paving the way for advanced, high-capacity supercapacitor applications.
Area of Science:
- Materials Science
- Electrochemistry
- Energy Storage
Background:
- Supercapacitors are crucial for high-capacity energy storage, high power output, and fast charging.
- Electrode material selection significantly impacts capacitor performance.
- Graphene oxide (GO) and reduced graphene oxide (RGO) are widely used for supercapacitor electrodes.
Purpose of the Study:
- To investigate the performance of novel graphene oxide/reduced graphene oxide (GO/RGO) bilayer electrodes for supercapacitor applications.
- To explore different combinations of GO and RGO layers on fluorine-doped tin oxide (FTO) substrates.
- To analyze the factors contributing to the electrochemical capacitance performance of these bilayer systems.
Main Methods:
- Synthesis of GO/RGO bilayer electrodes on FTO substrates with four configurations: RGO-RGO, RGO-GO, GO-RGO, and GO-GO.
- Electrochemical capacitance analysis using symmetrical and asymmetrical electrode configurations.
- Structural characterization and computational simulations to understand capacitance behavior.
Main Results:
- FTO-GO-RGO electrodes exhibited the best areal capacitance performance in symmetrical configurations.
- The highest specific areal capacitance (27.85 mF/cm²) was achieved with FTO-GO-RGO as the anode and FTO-GO-GO as the cathode in both symmetric/asymmetric setups.
- Inter-/intralayer molecular interactions within the GO/RGO bilayers, attributed to confinement pressure, influenced their unique properties.
Conclusions:
- The study successfully fabricated and characterized GO/RGO bilayer electrodes, demonstrating their potential for supercapacitors.
- The GO/RGO bilayer architecture offers a promising route to enhance supercapacitor performance.
- Fine-tuning the structural and molecular properties of multilayer GO/RGO electrodes is key for developing high-capacity energy storage solutions.
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
4.5K
09:27A Method for Systematic Electrochemical and Electrophysiological Evaluation of Neural Recording Electrodes
Published on: March 3, 2014
13.5K
Related Concept Videos
01:25MOS Capacitor
878
A Metal-Oxide-Semiconductor (MOS) capacitor is a fundamental structure used extensively in semiconductor device technology, particularly in the fabrication of integrated circuits and MOSFETs (metal-oxide-semiconductor field-effect transistors). The MOS capacitor consists of three layers: a metal gate, a dielectric oxide, and a semiconductor substrate.
The metal gate is typically made from highly conductive materials such as aluminum or polysilicon. Beneath the metal gate lies a thin layer of...
The metal gate is typically made from highly conductive materials such as aluminum or polysilicon. Beneath the metal gate lies a thin layer of...
878
01:31Dielectric Polarization in a Capacitor
4.8K
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...
4.8K
01:19Equivalent Capacitance
1.5K
Multiple capacitors can be connected in a circuit in series or parallel configuration. When the capacitor combination is connected to a battery, the potential drop across each capacitor and the magnitude of charge stored in the individual capacitor depends on the type of the connection. The capacitor combination is replaced by a single equivalent capacitor that stores the same amount of charge as the combination for a given potential difference.
The following strategies are adopted to calculate...
The following strategies are adopted to calculate...
1.5K
01:15Potentiometry: Membrane Electrodes
653
Membrane electrodes, also known as p-ion electrodes, use membranes that selectively interact with free analyte ions, generating a potential difference across the membrane. The resulting membrane potential, known as the asymmetry potential, is not zero even when analyte concentrations on both sides of the membrane are equal. The membrane's response is typically not selective to a single analyte but proportional to the concentration of all ions in the sample solution capable of interacting at...
653
01:18Capacitors and Capacitance
7.7K
A device consisting of two electrical conductors that are separated by a distance and used to store electrical charges is called a capacitor. The space between the conductors is either a vacuum or an insulating material, called a dielectric. Capacitors have many applications, ranging from filtering static from radio reception to energy storage in heart defibrillators.
When the conductors are two identical parallel plates, it is called a parallel plate capacitor. When battery terminals are...
When the conductors are two identical parallel plates, it is called a parallel plate capacitor. When battery terminals are...
7.7K
01:19Potentiometry: Types of Electrodes
770
Reference electrodes serve as a stable reference point for potentiometric measurements, while indicator and working electrodes react to variations in the composition of a solution.
The Standard Hydrogen Electrode (SHE) is a widely used reference electrode that maintains zero potential across all temperatures. However, its need for a continuous hydrogen gas supply renders it impractical for everyday use.
An alternative to SHE is the Saturated Calomel Electrode (SCE). This electrode features an...
The Standard Hydrogen Electrode (SHE) is a widely used reference electrode that maintains zero potential across all temperatures. However, its need for a continuous hydrogen gas supply renders it impractical for everyday use.
An alternative to SHE is the Saturated Calomel Electrode (SCE). This electrode features an...
770