Chemical Reviews· 2018Q1· Review
Design and Mechanisms of Asymmetric Supercapacitors
- 3,596citations
- Q1SCImago
- 2018year
Short summary
Asymmetric supercapacitors, using two different electrode materials, can overcome the voltage limitations of symmetric designs and improve energy storage capabilities.
AI-generated from the title and abstract; the full text is not read.
Key points
- Asymmetric supercapacitors use two different electrode materials.
- They extend the operating voltage window beyond electrolyte decomposition limits.
- This design overcomes energy storage limitations of symmetric supercapacitors.
- Recent progress in electrode materials and device structures is reviewed.
AI-generated from the title and abstract; the full text is not read.
Abstract
Ongoing technological advances in diverse fields including portable electronics, transportation, and green energy are often hindered by the insufficient capability of energy-storage devices. By taking advantage of two different electrode materials, asymmetric supercapacitors can extend their operating voltage window beyond the thermodynamic decomposition voltage of electrolytes while enabling a solution to the energy storage limitations of symmetric supercapacitors. This review provides comprehensive knowledge to this field. We first look at the essential energy-storage mechanisms and performance evaluation criteria for asymmetric supercapacitors to understand the wide-ranging research conducted in this area. Then we move to the recent progress made for the design and fabrication of electrode materials and the overall structure of asymmetric supercapacitors in different categories. We also highlight several key scientific challenges and present our perspectives on enhancing the electrochemical performance of future asymmetric supercapacitors.
The authors' abstract, as published at the source. Chemical Reviews, 2018 · DOI ↗
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Field: Electronic, Optical and Magnetic Materials
Electronic, Optical and Magnetic MaterialsMaterials Science