Supercapacitor and electrochemical techniques: A brief review

• Published in: Results in Chemistry Vol. 5; p. 100885
• Main Authors: Sharma, Swati, Chand, Prakash
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 01-01-2023; Elsevier
• Subjects: Electrochemical measurements; Electrolytes; Energy storage; Specific capacitance; Supercapacitor; Supercapacitor; Specific capacitance; Electrolytes; Electrochemical measurements; Energy storage
• ISSN: 2211-7156; 2211-7156
• DOI: 10.1016/j.rechem.2023.100885

•The current review article embraces the history along with the difference of supercapacitors with fuel cells, capacitors, and batteries.•The detailed explanation of fabrication of supercapacitors i.e. proper selection of electrode and electrolyte material, separator and current collector.•Each electrolyte type that is, aqueous, organic, redox additive and ionic liquids is thoroughly discussed.•Electrochemical characterization techniques such as Cyclic Voltammetry (CV), Galvanostatic Charge Discharge (GCD) and Electrochemical Impedance Spectroscopy (EIS) are also briefly discussed here.•Merit/challenges and future prospect of these systems in energy storage applications are summarized.
Energy storage plays crucial role to complete global and economical requirements of human beings. Supercapacitor act as promising candidate for energy storage applications due to its astonishing properties like - high power density, remarkable crystallinity, large porosity, elongated life-cycle, exceptional chemical & thermal stability, framework diversity and high specific surface area. The current review article embraces the history along with the difference of supercapacitors with fuel cells, capacitors, and batteriesand detailed explanation of fabrication of supercapacitors i.e. proper selection of electrode and electrolyte material, separator and current collector. As a supercapacitor electrode material, several carbon-based materials, metal-oxides, and metal–organic frameworks have been briefly mentioned here. The current review article also discusses the supercapacitor components and various types of electrolytes. Electrochemical characterization techniques such as Cyclic Voltammetry (CV), Galvanostatic Charge Discharge (GCD) and Electrochemical Impedance Spectroscopy (EIS) are also briefly discussed here. Furthermore, this article outlines the current issues as well as potential solutions for upcoming time period.