TY - JOUR
T1 - Synergistic effects of niobium phosphate/tungsten oxide core-shell nanocomposites for asymmetric supercapacitor
AU - Morankar, Pritam J.
AU - Amate, Rutuja U.
AU - Teli, Aviraj M.
AU - Beknalkar, Sonali A.
AU - Jeon, Chan Wook
N1 - Publisher Copyright:
© 2024 Elsevier B.V.
PY - 2025/1/1
Y1 - 2025/1/1
N2 - The energy requirements of modern civilization necessitate the use of efficient renewable energies. Therefore, this research assessed the effectiveness of newly developed niobium phosphate (NbPO5)/tungsten oxide (WO3) core-shell nanocomposite thin film electrodes fabricated through a combination of facile hydrothermal synthesis with electrodeposition method as promising energy storage devices. The investigation involved a thorough analysis of the optimization of reaction time for NbPO5 to explore the resulting modifications in their structural, morphological, and energy storage properties. Raman spectroscopy offers a detailed exploration of vibrational modes and structural characteristics while, X-ray photoelectron spectroscopy (XPS) spectra provide comprehensive information on the chemical composition, elemental state, and surface properties. NbPO5/WO3 core-shell electrode presented variable surface morphologies in accordance with the different synthesis times. The optimized NbP-W-6 sample demonstrated excellent energy storage performance, with a high areal capacitance of 5.97 F/cm2 at a current density of 20 mA/cm2 and energy density of 0.406 mWh/cm2 at a power density of 7 mW/cm2. Moreover, the NbP-W-6 sample exhibited outstanding long-term cycling stability, retaining 84.63 % of its total capacitance throughout 12,000 consecutive cycles. The remarkable energy storage capacity of the NbP-W-6 is attributed to its enhanced diffusion rate, higher charge transfer efficiency, and improved carrier mobility facilitated by the core-shell structure that combines the stability of NbPO5 with the high conductivity of WO3. The assembled asymmetric pouch-type supercapacitor device (APSD) achieves an areal capacitance of 759.0 mF/cm2 at a current density of 30 mA/cm2. Through highly competitive electrochemical performance, our findings reveal that core-shell nanocomposites deposited directly onto Ni-foam, opening up potential applications in energy storage.
AB - The energy requirements of modern civilization necessitate the use of efficient renewable energies. Therefore, this research assessed the effectiveness of newly developed niobium phosphate (NbPO5)/tungsten oxide (WO3) core-shell nanocomposite thin film electrodes fabricated through a combination of facile hydrothermal synthesis with electrodeposition method as promising energy storage devices. The investigation involved a thorough analysis of the optimization of reaction time for NbPO5 to explore the resulting modifications in their structural, morphological, and energy storage properties. Raman spectroscopy offers a detailed exploration of vibrational modes and structural characteristics while, X-ray photoelectron spectroscopy (XPS) spectra provide comprehensive information on the chemical composition, elemental state, and surface properties. NbPO5/WO3 core-shell electrode presented variable surface morphologies in accordance with the different synthesis times. The optimized NbP-W-6 sample demonstrated excellent energy storage performance, with a high areal capacitance of 5.97 F/cm2 at a current density of 20 mA/cm2 and energy density of 0.406 mWh/cm2 at a power density of 7 mW/cm2. Moreover, the NbP-W-6 sample exhibited outstanding long-term cycling stability, retaining 84.63 % of its total capacitance throughout 12,000 consecutive cycles. The remarkable energy storage capacity of the NbP-W-6 is attributed to its enhanced diffusion rate, higher charge transfer efficiency, and improved carrier mobility facilitated by the core-shell structure that combines the stability of NbPO5 with the high conductivity of WO3. The assembled asymmetric pouch-type supercapacitor device (APSD) achieves an areal capacitance of 759.0 mF/cm2 at a current density of 30 mA/cm2. Through highly competitive electrochemical performance, our findings reveal that core-shell nanocomposites deposited directly onto Ni-foam, opening up potential applications in energy storage.
KW - Asymmetric pouch-type supercapacitor device
KW - Charge storage kinetics
KW - Core-shell nanocomposites
KW - Hydrothermal and electrodeposition
KW - Tungsten oxide decoration on niobium phosphate
UR - http://www.scopus.com/inward/record.url?scp=85212409165&partnerID=8YFLogxK
U2 - 10.1016/j.surfin.2024.105639
DO - 10.1016/j.surfin.2024.105639
M3 - Article
AN - SCOPUS:85212409165
SN - 2468-0230
VL - 56
JO - Surfaces and Interfaces
JF - Surfaces and Interfaces
M1 - 105639
ER -