TY - JOUR
T1 - Investigating the synergistic effects of NbCo-oxide composite electrodes in supercapacitor and water splitting applications via hydrothermal synthesis
AU - Teli, Aviraj M.
AU - Beknalkar, Sonali A.
AU - Burungale, Vishal V.
AU - Amte, Rutuja U.
AU - Morankar, Pritam J.
AU - Satale, Vinayak V.
AU - Yewale, Manesh A.
AU - Dhavale, Rushikesh P.
AU - Shin, Jae Cheol
N1 - Publisher Copyright:
© 2024 Elsevier Ltd
PY - 2024/5/1
Y1 - 2024/5/1
N2 - A self-supported, binderless NbCo-oxide composite electrode was synthesized directly on a nickel foam (NF) substrate through a simple one-step hydrothermal process and utilized for energy storage and conversion applications. The optimized NbCo-oxide electrode displayed impressive energy storage capabilities, boasting an areal capacitance of 10.1 F/cm2 (equivalent to 9.10C/cm2), an energy density of 0.57 mWh/cm2, and a power density of 6.75 mW/cm2 at a 15 mA/cm2 current density. Furthermore, this electrode exhibited notable bifunctional activity, with low overpotentials of 217 mV for the hydrogen evolution reaction (HER) and 250 mV for the oxygen evolution reaction (OER) at a 10 mA/cm2 current density. The distinctive morphology, featuring rectangular blocks and plate-like microstructures, provided numerous exposed electro-active sites, facilitating efficient charge transfer, and enhancing overall electrochemical performance. The sturdy self-supporting structure on the NF substrate ensures remarkable stability, highlighting NbCo-composite materials' potential for energy storage and conversion.
AB - A self-supported, binderless NbCo-oxide composite electrode was synthesized directly on a nickel foam (NF) substrate through a simple one-step hydrothermal process and utilized for energy storage and conversion applications. The optimized NbCo-oxide electrode displayed impressive energy storage capabilities, boasting an areal capacitance of 10.1 F/cm2 (equivalent to 9.10C/cm2), an energy density of 0.57 mWh/cm2, and a power density of 6.75 mW/cm2 at a 15 mA/cm2 current density. Furthermore, this electrode exhibited notable bifunctional activity, with low overpotentials of 217 mV for the hydrogen evolution reaction (HER) and 250 mV for the oxygen evolution reaction (OER) at a 10 mA/cm2 current density. The distinctive morphology, featuring rectangular blocks and plate-like microstructures, provided numerous exposed electro-active sites, facilitating efficient charge transfer, and enhancing overall electrochemical performance. The sturdy self-supporting structure on the NF substrate ensures remarkable stability, highlighting NbCo-composite materials' potential for energy storage and conversion.
KW - Asymmetric supercapacitor device
KW - Electrocatalysis
KW - Energy storage
KW - Hydrothermal
KW - Niobium cobalt oxide
UR - http://www.scopus.com/inward/record.url?scp=85187960839&partnerID=8YFLogxK
U2 - 10.1016/j.est.2024.111155
DO - 10.1016/j.est.2024.111155
M3 - Article
AN - SCOPUS:85187960839
SN - 2352-152X
VL - 86
JO - Journal of Energy Storage
JF - Journal of Energy Storage
M1 - 111155
ER -
