Issue 7, 2023

Assembling a high-performance asymmetric supercapacitor based on pseudocapacitive S-doped VSe2/CNT hybrid and 2D borocarbonitride nanosheets

Abstract

The construction of high-performance asymmetric supercapacitors is vital for achieving a sustainable energy storage model. Layered 2D materials are considered pivotal contributing factors to modern-day energy storage solutions. Herein, the electrochemical performance of the S-doped VSe2/CNT positrode and the BCN negatrode is explored for the construction of a compelling aqueous asymmetric supercapacitor. This study provides an understanding of the sulfur doping effects and contributions of CNT addition in the energy storage performance of VSe2. The S doping and CNT addition played a significant role in boosting the pseudocapacitive energy storage performance of metallic VSe2. Borocarbonitride (BCN), which is utilized as a conventional electric double layer material, shows outstanding performance as a negatrode owing to its inherent properties. An asymmetric supercapacitor (ASC) assembled using S-VSe2/CNT and BCN yields a high energy density of 36.3 μW h cm−2 with remarkable reversibility and initial capacitance retention of 87.2% even after 5000 cycles. The remarkable electrochemical performance of S-VSe2/CNT//BCN ASC provides a significant reference for futuristic electronic and energy storage applications.

Graphical abstract: Assembling a high-performance asymmetric supercapacitor based on pseudocapacitive S-doped VSe2/CNT hybrid and 2D borocarbonitride nanosheets

Supplementary files

Article information

Article type
Paper
Submitted
29 lis 2022
Accepted
16 sij 2023
First published
17 sij 2023

J. Mater. Chem. C, 2023,11, 2565-2573

Assembling a high-performance asymmetric supercapacitor based on pseudocapacitive S-doped VSe2/CNT hybrid and 2D borocarbonitride nanosheets

S. R. K. A., K. Pramoda and C. S. Rout, J. Mater. Chem. C, 2023, 11, 2565 DOI: 10.1039/D2TC04600H

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