Related Experiment Video
Updated: Jun 2, 2025

Evaluating the Electrochemical Properties of Supercapacitors using the Three-Electrode System
Published on: January 7, 2022
High-performance hybrid supercapacitors enabled by CoTe@CoFeTe double-shelled nanocubes.
Helya Gholami Shamami1, Akbar Mohammadi Zardkhoshoui2, Saied Saeed Hosseiny Davarani1
1Department of Chemistry, Shahid Beheshti University, G. C., 1983963113, Evin, Tehran, Iran. ss-hosseiny@sbu.ac.ir.
Novel metal telluride nanocubes synthesized using a metal-organic framework hybrid show excellent performance for supercapacitors. These CoTe@CoFeTe materials offer high capacity and durability, paving the way for advanced energy storage solutions.
Area of Science:
- Materials Science
- Electrochemistry
- Nanotechnology
Background:
- Metal tellurides possess superior electrical conductivity and electrochemical properties, making them suitable for energy storage.
- Supercapacitors require advanced electrode materials for enhanced performance and durability.
Purpose of the Study:
- To develop a novel synthesis method for CoTe@CoFeTe double-shelled nanocubes.
- To evaluate the supercapacitive performance of the synthesized material.
Main Methods:
- Synthesis of zeolitic imidazolate framework-67 (ZIF67) and CoFe Prussian blue analog (PBA) nanocubes.
- Conversion to Co3O4@CoFe2O4 double-shelled nanocubes via annealing.
- Tellurization to form CoTe@CoFeTe nanocubes.
Main Results:
- CoTe@CoFeTe nanocubes exhibited a specific capacity of 1312 C g⁻¹ at 1 A g⁻¹.
- The material maintained 92.35% capacity after 10,000 cycles.
- A hybrid supercapacitor with activated carbon achieved an energy density of 64.66 W h kg⁻¹ and 88.25% capacity retention.
Conclusions:
- The developed CoTe@CoFeTe nanocubes demonstrate superior supercapacitive performance compared to oxide counterparts.
- The hollow structure and synergistic effect of mixed metals contribute to enhanced durability and performance.
- The material shows significant potential for advanced supercapacitor applications.
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
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...
Capacitor With A Dielectric
Dielectrics are non-conducting materials with no free or loosely bound electrons. When a dielectric is...
Capacitors
When a voltage source is connected to a capacitor, positive and negative charges accumulate on the opposite plates. This accumulation generates a potential difference that equals the product of the...
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...
Equivalent Capacitance