Related Experiment Video
Updated: Jan 24, 2026

Evaluating the Electrochemical Properties of Supercapacitors using the Three-Electrode System
Published on: January 7, 2022
Electrochemical performance of l-tryptophanium picrate as an efficient electrode material for supercapacitor
Rajkumar Srinivasan1, Elanthamilan Elaiyappillai, S Gowri
1Department of Chemistry, Bishop Heber College, Tiruchirappalli-620 017, Tamil Nadu, India. pmej_68@yahoo.co.in.
Abstract:
A new, prominently stable organic material, l-tryptophanium picrate, was synthesized via a one-step process. The as-prepared sample was characterized by UV-visible, FT-IR, Raman, TGA-DSC, XRD, FE-SEM, EDX, 1H-NMR, 13C-NMR and GC-MS. The significant capacitive behaviour of l-tryptophanium picrate was investigated by cyclic voltammetric studies (CV), galvanostatic charge-discharge tests and impedance spectroscopy techniques in 1 M aqueous KOH. The newly fabricated l-tryptophanium picrate electrode material exhibited an excellent specific capacitance of 263 F g-1 at a current density of 1 A g-1. Furthermore, it exhibited a capacitance retention of about 92% even after 2000 consecutive charge/discharge cycles. Moreover, the as-prepared electrode material illustrated electrochemically reversible behaviour. In addition, the synthesized material showed good electrochemical performance under the selected potential window. Thus, the fabricated electrode was proved to be a promising alternate electrode for high performance energy storage applications.
Related Concept Videos
What is an Electrochemical Gradient?
The chemical gradient relies on differences in the abundance of a substance on the outside versus the inside of a cell and flows from areas of high to low ion concentration. In contrast, the electrical gradient revolves around an...
Standard Electrode Potentials
Electrodes: Overview
There are two main types of electrodes in electrochemical cells. The first type, known as the working or indicator electrode, has a potential that is sensitive to the analyte's concentration and reacts to changes in...
Interfacial Electrochemical Methods: Overview
Members Made of Elastoplastic Material
As the bending moment...
Genetic Material

