Effect of the phase composition of cathode material basedon vanadium oxide nanofibers on the electrochemical characteristicsof a lithium-ion battery

Andrey S. Sharlaev; Olga Ya. Berezina; Filipp S. Volkov; Svetlana N. Eliseeva

doi:10.17308/kcmf.2026.28/13973

Authors

Andrey S. Sharlaev Petrozavodsk State University, 33, Lenin aven., Petrozavodsk 185910, Russian Federation
Olga Ya. Berezina Petrozavodsk State University, 33, Lenin aven., Petrozavodsk 185910, Russian Federation
Filipp S. Volkov St. Petersburg State University, 7-9, Universitetskaya Embankment, St. Petersburg 199034, Russian Federation
Svetlana N. Eliseeva St. Petersburg State University, 7-9, Universitetskaya Embankment, St. Petersburg 199034, Russian Federation

DOI:

https://doi.org/10.17308/kcmf.2026.28/13973

Keywords:

Cathode material, Lithium-ion battery, Vanadium oxides, Electrospinning, nanofibers

Abstract

Objectives: Progress in improving the performance characteristics of lithium-ion batteries is largely determined by the cathode material. Various modifications of vanadium oxides attract interest as cathode materials. For example, a vanadium ion or a vacancy at a vanadium pentoxide lattice site can accommodate two positively charged lithium ions, resulting in a high theoretical specific capacity (~294 mAh·g–1). However, during operation, the material rapidly degrades and loses its initial specific capacity. A variety of strategies has been proposed to mitigate capacity degradation, including structural modification, phase composition control, and heteroatom doping with foreign metal ions. The main aim of this work was to evaluate the effect of the phase composition of cathode material based on vanadium oxide nanofibers on the performance characteristics of a lithium-ion battery.

Experimental: The cathode material was fabricated from vanadium oxide nanofibers synthesized via electrospinning. The phase composition and surface morphology of the nanofibers were studied by X-ray diffraction and scanning electron microscopy. The cathode material was evaluated using standard electrochemical techniques.

Conclusions: All samples were mixtures of vanadium oxides (V₂O₅, VO₂, V₄O₉, V₆O₁₃) in various ratios. With increasing molar fraction of oxalic acid during annealing, the percentage of vanadium pentoxide decreases while that of vanadium dioxide increases. Electrochemical studies of the material showed that replacement of vanadium pentoxide nanofibers in the cathode material with nanofibers consisting of a mixture of vanadium oxides led to a decrease in initial specific capacity and did not increase cycling stabilit

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Author Biographies

Andrey S. Sharlaev, Petrozavodsk State University, 33, Lenin aven., Petrozavodsk 185910, Russian Federation

Senior Teacher at the Department of General Physics, Petrozavodsk State University (Petrozavodsk, Russian Federation)
Olga Ya. Berezina, Petrozavodsk State University, 33, Lenin aven., Petrozavodsk 185910, Russian Federation

Cand. Sci. (Phys.–Math.), Associate Professor at the Department of General Physics, Petrozavodsk State University (Petrozavodsk, Russian Federation)
Filipp S. Volkov, St. Petersburg State University, 7-9, Universitetskaya Embankment, St. Petersburg 199034, Russian Federation

postgraduate student at the Department of Electrochemistry, St. Petersburg State University (St. Petersburg, Russian Federation)
Svetlana N. Eliseeva, St. Petersburg State University, 7-9, Universitetskaya Embankment, St. Petersburg 199034, Russian Federation

Cand. Sci. (Chem.), Associate Professor at the Department of Electrochemistry, St. Petersburg State University (St. Petersburg, Russian Federation)

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