A straightforward approach for synthesizing vanadium-doped 2D MoSe2 as cathode in high-energy lithium-ion supercapacitors
Journal
Inorganica Chimica Acta
Journal Volume
592
Start Page
123038
ISSN
00201693
Date Issued
2026-03-01
Author(s)
Abstract
A simple hydrothermal and calcination procedure was used to synthesize 2D‑vanadium-doped MoSe₂ nanosheets (V-MoSe₂ NSs) with good control over shape and crystallinity in this study. Se removal from the V-Mo structure was assessed by p-XRD, FE-SEM, EDAX, and FE-TEM. The findings demonstrate that the crystal phase and textural characteristics alter as a result of physical parameter adjustment. The V-MoSe₂ in the two-electrode system was found to have a specific capacitance of 369 F g−1, which is higher than that of the pristine MoSe₂ (P-MoSe₂) electrode. The assembled lithium-ion supercapacitor (LISC) also exhibits impressive electrochemical performance, possessing an energy density of 479 Wh kg−1 and a power density of 8.7 kW kg−1, with good cycling stability and 88 % capacitance retention after 5000 cycles. The novelty of this work lies in the rational incorporation of vanadium into the MoSe₂ lattice to engineer its electronic structure and surface properties, which effectively enhances charge storage capability and ion diffusion kinetics. The increase in the electrochemical performance of V-MoSe₂ was due to its distinctive nanosheet-like morphology, which features a high specific surface area, low charge transfer resistance, and reduced ion diffusion resistance. This study displays a practical scheme for a combination of electrodes made of the metallic element vanadium and selenide.
Subjects
2D MoSe2
Energy density
Li-ion supercapacitor
Vanadium doped MoSe2
SDGs
Publisher
Elsevier B.V.
Type
journal article