Issue 10, 2023

Role of the electrode-edge in optically sensitive three-dimensional carbon foam-MoS2 based high-performance micro-supercapacitors

Abstract

Developing high-performance micro-supercapacitors in a limited footprint area is important for miniaturized electronics, where enhancement in energy storage per unit area is critical. In this study, we used zig-zag edge based interdigitated electrodes for the micro-supercapacitor. The novel electrode geometry contributes to improved electrochemical capacitance, energy density, and power density compared to planar edge interdigitated electrodes. The zig-zag edges of the electrodes induce stronger electric field intensity between the interdigitated fingers contributing to enhanced charge storage capacity. A simulation study further confirmed the enhanced electric field intensity. A layered molybdenum disulfide (MoS2) nanostructure directly grown on a three-dimensional scaffold of carbon foam (CF) is used as the electrode material. The novel zig-zag interdigitated electrode geometry demonstrated an areal capacitance of 21 mF cm−2, which is 242% (or ∼350% enhancement while considering electrode interdigitated finger area only) higher than that of the planar edge electrodes using the same material. Moreover, the optically sensitive CF–MoS material resulted in an optically chargeable supercapacitor upon illumination with 600 nm radiation, where a self-powered voltage generation is observed. The study provides broad future prospects for combining electrode design and optically sensitive materials for enhanced charge storage in micro-supercapacitors. Thus, the study demonstrated a promising route to design efficient planar supercapacitor devices for miniaturized electronics and self-powered devices.

Graphical abstract: Role of the electrode-edge in optically sensitive three-dimensional carbon foam-MoS2 based high-performance micro-supercapacitors

Supplementary files

Article information

Article type
Communication
Submitted
18 Pun 2022
Accepted
23 Phe 2023
First published
26 Phe 2023

J. Mater. Chem. A, 2023,11, 4963-4976

Role of the electrode-edge in optically sensitive three-dimensional carbon foam-MoS2 based high-performance micro-supercapacitors

S. Kumar, A. Mukherjee, S. Telpande, A. D. Mahapatra, P. Kumar and A. Misra, J. Mater. Chem. A, 2023, 11, 4963 DOI: 10.1039/D2TA09002C

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.

Social activity

Spotlight

Advertisements