Journal
NEW JOURNAL OF CHEMISTRY
Volume 46, Issue 27, Pages 13117-13121Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/d2nj01971j
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Funding
- Young Taishan Scholars Program of Shandong Province [tsqn201909124]
- National Natural Science Foundation of China [21775054]
- Project of 20 items of University of Jinan [2019GXRC018]
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Introducing defects can enhance the electrocatalytic activity of nanomaterials. In this study, defect-rich and porous cobalt phosphide nanowire array electrocatalyst was successfully prepared from a MOF material, showing excellent catalytic performance in water splitting. The catalyst exhibits efficient hydrogen and oxygen evolution reactions and demonstrates good stability.
It is an indisputable fact that electrocatalytic activity is always improved by introducing defects into nanomaterials. Thus, this study demonstrates a simple strategy for a defect-rich and porous cobalt phosphide nanowire array electrocatalyst derived from a MOF material on a nickel foam, which drives water splitting well in alkaline media. Excitingly, p-CoP/NF shows an excellent catalytic performance toward the hydrogen evolution reaction with an ultralow overpotential of 35 mV to achieve 10 mA cm(-2). Similarly, it is capable of the oxygen evolution reaction and reaches a current density of 10 mA cm(-2) with an overpotential of 253 mV. Furthermore, when the anode and cathode of a two-electrode electrolytic cell are both assembled from p-CoP/NF electrodes, this cell requires a voltage of only 1.55 V to afford a current density of 10 mA cm(-2) and exhibits satisfactory durability, which fully demonstrates the potential application of p-CoP/NF electrodes for water splitting.
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