Improved charge storage performance of a layered Mo1.33C MXene/MoS2/graphene nanocomposite

Ahmed El Ghazaly; Ulises A Méndez-Romero; Joseph Halim; Eric Nestor Tseng; Per O Å Person; Bilal Ahmed; Ergang Wang; Johanna Rosen

doi:10.1039/d1na00642h

Improved charge storage performance of a layered Mo_1.33C MXene/MoS₂/graphene nanocomposite

Nanoscale Adv. 2021 Oct 1;3(23):6689-6695. doi: 10.1039/d1na00642h. eCollection 2021 Nov 24.

Authors

Ahmed El Ghazaly¹, Ulises A Méndez-Romero², Joseph Halim¹, Eric Nestor Tseng³, Per O Å Person³, Bilal Ahmed³, Ergang Wang², Johanna Rosen¹

Affiliations

¹ Materials Design Division, Department of Physics, Chemistry and Biology (IFM), Linköping University 581 83 Linköping Sweden johanna,rosen@liu.se.
² Department of Chemistry and Chemical Engineering, Chalmers University of Technology Goteborg SE-412 96 Sweden.
³ Thin Film Physics Division, Department of Physics, Chemistry and Biology (IFM), Linköping University 581 83 Linköping Sweden.

Abstract

The construction of nanocomposite electrodes based on 2D materials is an efficient route for property enrichment and for exploitation of constituent 2D materials. Herein, a flexible Mo_1.33C i-MXene/MoS₂/graphene (MOMG) composite electrode is constructed, utilizing an environment-friendly method for high-quality graphene and MoS₂ synthesis. The presence of graphene and MoS₂ between MXene sheets limits the commonly observed restacking, increases the interlayer spacing, and facilitates the ionic and electronic conduction. The as-prepared MOMG electrode delivers a volumetric capacitance of 1600 F cm^-3 (450 F g^-1) at the scan rate of 2 mV s^-1 and retains 96% of the initial capacitance after 15 000 charge/discharge cycles (10 A g^-1). The current work demonstrates that the construction of nanocomposite electrodes is a promising route towards property enhancement for energy storage applications.