151. Ni doped Bi2WO6 for electrochemical OER activity.
- Author
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Keerthana, SP., Rani, B. Jansi, Ravi, G., Yuvakkumar, R., Hong, S.I., Velauthapillai, Dhayalan, Saravanakumar, B., Thambidurai, M., and Dang, Cuong
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HYDROGEN evolution reactions , *ELECTRODE potential , *ELECTROCHEMICAL electrodes , *ELECTRON transport , *HYDROGEN as fuel , *FOSSIL fuels - Abstract
Due to over depletion of fossil fuels, researchers started to find hydrogen energy to compete with the energy demands. Bi 2 WO 6 and Ni (5% and 10%) doped Bi 2 WO 6 were prepared via hydrothermal route. Structural confirmation of undoped and doped Bi 2 WO 6 nanostructures was estimated by using standard characterization studies. The nanoflake and nanoneedle like morphology of undoped and Ni doped Bi 2 WO 6 was confirmed in nanoscale range. The highest OER activity was achieved for 10% Ni doped Bi 2 WO 6 nanostructure electrode with the excellent current density of 272 mA/g with overpotential of 242 mV in the fabricated three electrode half cell set up. The higher electron transport offered by Ni ions to Bi 2 WO 6 host has been reported with the electrochemical mechanism. Hence, the unusual robust electrodes for electrochemical potential applications by tuning its property via suitable foreign ion dopant could be the great beginning of this recent year research. In such a way, this work would be the better way of swapping of nobel metal catalysts for electrochemical OER activity. • Bare and Ni doped Bi 2 WO 6 morphological evolution has been explored. • 10% Ni doped Bi 2 WO 6 revealed excellent OER activity of 272 mA/g at 10 mV/s. • Appreciably low overpotential of 242 mV has been achieved for 10% Ni doped Bi 2 WO 6. • Explored higher electron transport offered by Ni ions to Bi 2 WO 6 host. • Outstanding stability over 24 h with high conductivity was achieved. [ABSTRACT FROM AUTHOR]
- Published
- 2020
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