• Effect of electrolyte concentration on the electrochemical performance of RGO–KOH supercapacitor

• # Fulltext

https://www.ias.ac.in/article/fulltext/boms/044/0288

• # Keywords

Supercapacitor; reduced graphite oxide (RGO); electrolyte concentration, hybrid charge storage.

• # Abstract

The electrolyte used, plays a crucial role in the electrochemical performance of supercapacitors. It is known that the concentration of electrolyte is also a controlling parameter for a given active material where the performance will be optimum for a particular concentration. Herein, we report a study on the effect of electrolyte concentration on the electrochemical performance of reduced graphite oxide–potassium hydroxide supercapacitor. The supercapacitor achievesa maximum specific capacitance of 232 F g$^{-1}$ in 6 M KOH with energy and power density values of ${\sim}$21 Wh kg$^{-1}$ and ${\sim}$400 W kg$^{-1}$, respectively. The kinetics of charge storage reveals that the combination of surface phenomenon andintercalation process leads to maximum specific capacitance.

• # Author Affiliations

1. Department of Physics, University of Kerala, Karyavattom, Thiruvananthapuram 695 581, India

• # Bulletin of Materials Science

Volume 45, 2022
All articles
Continuous Article Publishing mode

• # Dr Shanti Swarup Bhatnagar for Science and Technology

Posted on October 12, 2020

Prof. Subi Jacob George — Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur, Bengaluru
Chemical Sciences 2020