Pseudocapacitive Behavior of Blade-Coated Mo1.33CTx i-MXene Electrodes in Aqueous Electrolytes

Pseudocapacitive Behavior of Blade-Coated Mo1.33CTx i-MXene Electrodes in Aqueous Electrolytes Full article

Journal

Nanomaterials
ISSN: 2079-4991

Output data

Year: 2025, Volume: 15, Article number : 1593, Pages count : 18 DOI: 10.3390/nano15201593

Tags

MXene; molybdenum carbide; nanosheet; capacitance; energy storage; supercapacitor

Authors

Tsyganov A. ¹ , Grapenko O. ² , Korotaev E. ³ , Shindrov A. ⁴ , Alferov A. ¹ , Gorokhovsky A. ¹ , Gorshkov N. ¹

Affiliations

1	Department of Chemistry and Technology of Materials, Yuri Gagarin State Technical University of Saratov, 77 Polytecnicheskaya Street, 410054 Saratov, Russia; andrey_080202@mail.ru (A.A.); algo54@mail.ru (A.G.)
2	Research Institute of Physics, Southern Federal University, 194 Stachki Avenue, 344011 Rostov-on-Don, Russia; grapenko@sfedu.ru
3	Nikolaev Institute of Inorganic Chemistry, Siberian Branch, Russian Academy of Sciences, 630090 Novosibirsk, Russia; korotaev@niic.nsc.ru
4	Institute of Solid State Chemistry and Mechanochemistry, Siberian Branch of the Russian Academy of Sciences, 18 Kutateladze, 630090 Novosibirsk, Russia; a.shindrov@yandex.ru

Two-dimensional molybdenum carbide (Mo1.33CTx MXene) with ordered vacancies is one of the most promising materials for electrochemical energy storage. However, the high defectivity and tendency to aggregate of nanosheets hinders the large-scale fabrication of highly efficient Mo1.33CTx -based electrodes. In this study, Mo1.33CTx/carbon nanotubes (CNTs) electrodes of varying thicknesses were fabricated using a scalable doctor blade technique. Their electrochemical performance was studied in H2SO4, H3PO4, LiCl and KCl electrolytes using cyclic voltammetry and galvanostatic charge–discharge methods. Electrodes with an active material mass loading of 1.6 mg/cm2 exhibited specific capacitances of 352, 287, 172, and 107 F/g in H2SO4, H3PO4, LiCl, and KCl electrolytes, respectively, at a scan rate of 2 mV/s. Increasing the mass loading of the electrode material to 3.5 mg/cm2 resulted in a specific capacitance of 349, 260, 162 and 98 F/g in the same electrolytes. The incorporation of CNTs enabled rapid electrolyte ion transport throughout the electrode bulk, maintaining high capacitance values even at high scan rates. These results open new avenues for the development of high-performance electrode materials for supercapacitors.

Tsyganov A. , Grapenko O. , Korotaev E. , Shindrov A. , Alferov A. , Gorokhovsky A. , Gorshkov N.
Pseudocapacitive Behavior of Blade-Coated Mo1.33CTx i-MXene Electrodes in Aqueous Electrolytes
Nanomaterials. 2025. V.15. 1593 :1-18. DOI: 10.3390/nano15201593 WOS OpenAlex

Submitted:	Sep 11, 2025
Published print:	Oct 19, 2025

Web of science:	WOS:001601990800001
OpenAlex:	W4415361710

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