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Evaluating the Electrochemical Properties of Supercapacitors using the Three-Electrode System
Published on: January 7, 2022
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Electrochemical capacitors: mechanism, materials, systems, characterization and applications
Yonggang Wang1, Yanfang Song1, Yongyao Xia1
1Department of Chemistry and Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Institute of New Energy, iChEM (Collaborative Innovation Center of Chemistry for Energy Materials), Fudan University, Shanghai, 200433, China. yyxia@fudan.edu.cn.
Chemical Society Reviews
|August 23, 2016
Summary
Supercapacitors offer high power and stability, bridging the gap between capacitors and batteries. This review covers their mechanisms, materials, and applications, highlighting new intercalative pseudocapacitive behavior.
Area of Science:
- Materials Science
- Electrochemistry
- Energy Storage
Background:
- Supercapacitors, including electrochemical double-layer and pseudo-capacitors, store energy via ion adsorption or surface redox reactions.
- They offer higher energy density than dielectric capacitors but lower than batteries, with advantages in power density, cyclic stability, and safety.
- Supercapacitors serve as alternatives or complements to batteries for high-power or fast-energy-harvesting applications.
Approach:
- This article reviews recent advancements in supercapacitor technology.
- Key areas include charge storage mechanisms, electrode and electrolyte materials, system design, and characterization techniques.
- A novel intercalative pseudocapacitive mechanism, bridging battery and conventional pseudocapacitive behaviors, is discussed.
Key Points:
- Exploration of diverse charge storage mechanisms, including conventional and novel intercalative pseudocapacitive behaviors.
- Analysis of state-of-the-art electrode and electrolyte materials for enhanced performance.
- Discussion of system integration, characterization methodologies, and emerging applications.
Conclusions:
- Supercapacitors present a promising energy storage solution with unique advantages for specific applications.
- Further research into advanced materials and charge storage mechanisms is crucial for unlocking their full potential.
- Addressing current challenges will pave the way for broader practical implementation of supercapacitor technology.
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