TY - JOUR
T1 - Electrochemical supercapacitor and water splitting electrocatalysis applications of self-grown amorphous Ni(OH)2 nanosponge-balls
AU - Al-Hejri, Tariq M.
AU - Shaikh, Zeenat A.
AU - Al-Naggar, Ahmed H.
AU - Raut, Siddheshwar D.
AU - Siddiqui, Tabassum
AU - Danamah, Hamdan M.
AU - Jadhav, Vijaykumar V.
AU - Al-Enizi, Abdullah M.
AU - Mane, Rajaram S.
N1 - Publisher Copyright:
© 2023
PY - 2024/1/10
Y1 - 2024/1/10
N2 - A promising self-growth (caused by surface modification due to oxidation/reduction) approach for the synthesis of nickel hydroxide (Ni(OH)2) nanosponge-balls on Ni-foam (NiF) electrode surface as a multifunctional electrode material for applications like energy storage and electrocatalysis is explored. Extensive physical and chemical characterizations carried out through advanced analytical techniques reveal the distinctive nanosponge-ball-type surface morphology of the Ni(OH)2@NiF, confirming the successful hydroxilation of the NiF electrode surface to Ni(OH)2@NiF. In terms of energy storage, on using Ni(OH)2@NiF electrode as a half-cell electrode material, an impressive specific capacitance of 803.08 F.g-1 at a current density of 6 mA.cm-2 is obtained, highlighting its energy storage potentiality. When integrated it into an asymmetric supercapacitor (ASC) alongside Bi2O3@NiF through the Ni(OH)2@NiF//Bi2O3@NiF, a remarkable power density of 2250 Wkg-1 at an energy density of 96.5 Wh kg-1 with exceptional cycling stability of 83.33 % even after 3500 cycles is confirmed. Moreover, on using the Ni(OH)2@NiF electrode as electrocatalyst, a robust activity with ultra-low overpotentials of 240 mV and 158 mV and Tafel slopes 62 mV dec‑1 and 127 mV dec‑1 are obtained for the oxygen evolution reaction and the hydrogen evolution reaction activities in a 6 M KOH electrolyte solution at a current density of 10 mA cm-2, respectively, suggesting importance of the developed Ni(OH)2@NiF electrode material in both energy storage and water splitting, into hydrogen and oxygen, applications.
AB - A promising self-growth (caused by surface modification due to oxidation/reduction) approach for the synthesis of nickel hydroxide (Ni(OH)2) nanosponge-balls on Ni-foam (NiF) electrode surface as a multifunctional electrode material for applications like energy storage and electrocatalysis is explored. Extensive physical and chemical characterizations carried out through advanced analytical techniques reveal the distinctive nanosponge-ball-type surface morphology of the Ni(OH)2@NiF, confirming the successful hydroxilation of the NiF electrode surface to Ni(OH)2@NiF. In terms of energy storage, on using Ni(OH)2@NiF electrode as a half-cell electrode material, an impressive specific capacitance of 803.08 F.g-1 at a current density of 6 mA.cm-2 is obtained, highlighting its energy storage potentiality. When integrated it into an asymmetric supercapacitor (ASC) alongside Bi2O3@NiF through the Ni(OH)2@NiF//Bi2O3@NiF, a remarkable power density of 2250 Wkg-1 at an energy density of 96.5 Wh kg-1 with exceptional cycling stability of 83.33 % even after 3500 cycles is confirmed. Moreover, on using the Ni(OH)2@NiF electrode as electrocatalyst, a robust activity with ultra-low overpotentials of 240 mV and 158 mV and Tafel slopes 62 mV dec‑1 and 127 mV dec‑1 are obtained for the oxygen evolution reaction and the hydrogen evolution reaction activities in a 6 M KOH electrolyte solution at a current density of 10 mA cm-2, respectively, suggesting importance of the developed Ni(OH)2@NiF electrode material in both energy storage and water splitting, into hydrogen and oxygen, applications.
KW - Electrochemical supercapacitor
KW - Hydrogen evolution reaction
KW - Hydrothermal method
KW - Oxygen evolution reaction
KW - Self-grown Ni(OH) nanosponge-balls
UR - http://www.scopus.com/inward/record.url?scp=85182157546&partnerID=8YFLogxK
U2 - 10.1016/j.electacta.2023.143516
DO - 10.1016/j.electacta.2023.143516
M3 - 文章
AN - SCOPUS:85182157546
SN - 0013-4686
VL - 474
JO - Electrochimica Acta
JF - Electrochimica Acta
M1 - 143516
ER -
