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Evaluating the Electrochemical Properties of Supercapacitors using the Three-Electrode System
Published on: January 7, 2022
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Polymorphous Supercapacitors Constructed from Flexible Three-Dimensional Carbon Network/Polyaniline/MnO2 Composite
Jinjie Wang1, Liubing Dong1,2, Chengjun Xu1
1Graduate School at Shenzhen , Tsinghua University , Shenzhen 518055 , China.
ACS Applied Materials & Interfaces
|March 13, 2018
Summary
Flexible textile electrodes made of carbon networks, polyaniline (PANI), and manganese dioxide (MnO2) were developed for polymorphous supercapacitors. These novel supercapacitors offer high energy and power densities, demonstrating potential for advanced energy storage applications.
Area of Science:
- Materials Science
- Electrochemistry
- Energy Storage
Background:
- Flexible electronics require high-performance energy storage components.
- Textile-based electrodes offer unique advantages in flexibility and conformability.
- Composite materials combining conductive networks with pseudocapacitive materials are promising for supercapacitors.
Purpose of the Study:
- To construct polymorphous supercapacitors using flexible 3D carbon network/polyaniline (PANI)/MnO2 composite textile electrodes.
- To investigate the electrochemical performance of symmetric and asymmetric supercapacitors based on these textile electrodes.
- To explore the fabrication of solid-state and fiber-like supercapacitors for versatile applications.
Main Methods:
- Layer-by-layer fabrication of textile electrodes on activated carbon fiber cloth (ACFC) using electropolymerization, dipping/drying, and in situ chemical reactions.
- Construction of symmetric and asymmetric supercapacitors using the composite textile electrodes.
- Preparation of solid-state textile supercapacitors with gel electrolytes and fiber-like supercapacitors.
Main Results:
- The ACFC/PANI/CNTs/MnO2 textile electrodes exhibited excellent performance in symmetric supercapacitors (4615 mF cm-2 areal capacitance, 157 μWh cm-2 energy density).
- Asymmetric supercapacitors achieved enhanced energy density (413 μWh cm-2) and power density (16120 μW cm-2).
- Solid-state and fiber-like supercapacitors demonstrated good electrochemical performance and high flexibility.
Conclusions:
- The developed flexible composite textile electrodes are highly effective for constructing high-performance polymorphous supercapacitors.
- The study highlights the potential of textile-based electrodes for flexible and wearable energy storage devices.
- This work offers a versatile approach for designing advanced textile supercapacitors with tunable properties.
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