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 Научная публикация

Журнал

Nanomaterials
ISSN: 2079-4991

Вых. Данные

Год: 2025, Том: 15, Номер статьи : 1593, Страниц : 18 DOI: 10.3390/nano15201593

Ключевые слова

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

Авторы

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

Организации

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

Поступила в редакцию:	11 сент. 2025 г.
Опубликована в печати:	19 окт. 2025 г.

Web of science:	WOS:001601990800001
OpenAlex:	W4415361710

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