Enhanced Electrochemical Performance of MWCNT-Assisted Molybdenum-Titanium Carbide MXene as a Potential Electrode Material for Energy Storage Application.

Autor: Hakim MW; Physics Characterization and Simulations Lab (PCSL), Department of Physics, School of Natural Sciences (SNS), National University of Sciences and Technology (NUST), Islamabad 54000, Pakistan., Ali I; Physics Characterization and Simulations Lab (PCSL), Department of Physics, School of Natural Sciences (SNS), National University of Sciences and Technology (NUST), Islamabad 54000, Pakistan., Fatima S; Physics Characterization and Simulations Lab (PCSL), Department of Physics, School of Natural Sciences (SNS), National University of Sciences and Technology (NUST), Islamabad 54000, Pakistan., Li H; Shandong Technology Center of Nanodevices and Integration, School of Microelectronics, Shandong University, Jinan 250101, China.; Department of Material Science and Engineering, Uppsala University, 75121 Uppsala, Sweden., Jafri SHM; Department of Electrical Engineering, Mirpur University of Science and Technology (MUST), Mirpur 10250, Azad Jammu and Kashmir, Pakistan., Rizwan S; Physics Characterization and Simulations Lab (PCSL), Department of Physics, School of Natural Sciences (SNS), National University of Sciences and Technology (NUST), Islamabad 54000, Pakistan.
Jazyk: angličtina
Zdroj: ACS omega [ACS Omega] 2024 Feb 14; Vol. 9 (8), pp. 8763-8772. Date of Electronic Publication: 2024 Feb 14 (Print Publication: 2024).
DOI: 10.1021/acsomega.3c04932
Abstrakt: Two-dimensional (2D) materials such as MXenes have attracted considerable attention owing to their enormous potential for structural flexibility. Here, we prepared a Mo 2 TiC 2 T x -layered structure from parent Mo 2 TiAlC 2 T x MAX by chemically selective etching of the aluminum layer. The prepared MXene was employed in composite formation with CTAB-grafted multiwalled carbon nanotubes (MWCNTs) to have a structure with improved electrochemical performance. The samples were characterized to analyze the structure, morphology, elemental detection, vibrational modes, and surface chemistry, followed by an electrochemical performance of the Mo 2 TiC 2 T x MXene and MWCNTs@Mo 2 TiC 2 T x composite using the GAMRAY Potentiostat under a 1 M KOH electrolyte. The specific capacitance of pristine Mo 2 TiC 2 T x was 425 F g -1 , which was enhanced to 1740 F g -1 (almost 4 times) at 5 mV s -1 due to the increase in active surface area and conductive paths between the MXene sheets. The charge storage mechanism was studied by further resolving the cyclic voltammograms. MWCNTs@Mo 2 TiC 2 T x showed much improved electrochemical performance and reaction kinetics, making it an ideal material candidate for supercapacitor applications.
Competing Interests: The authors declare no competing financial interest.
(© 2024 The Authors. Published by American Chemical Society.)
Databáze: MEDLINE
Externí odkaz: