期刊
ENERGY & ENVIRONMENTAL SCIENCE
卷 12, 期 11, 页码 3348-3355出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c9ee02787d
关键词
-
资金
- Ministry of Education of Singapore through Academic Research Fund (AcRF) Tier-1 Funding [M4011783, RG5/17]
Efficient electrocatalysts are of great importance in improving the water splitting efficiency. Herein, we develop a self-templating strategy to construct porous iron cobalt (oxy)phosphide (Fe-Co-P) nanoboxes as promising pre-catalysts for the oxygen evolution reaction in alkaline solution. The constructed Fe-Co-P nanoboxes exhibit excellent electrocatalytic activity and afford a current density of 10 mA cm(-2) at a small overpotential of 269 mV. Moreover, the structural evolution of the metal phosphides in the oxygen evolution process has been well monitored. X-ray absorption near-edge structure analyses and computational studies reveal that the structural merits and the effective intramolecular electronic coupling between the Fe and Co atoms via P/O bridges are responsible for the greatly improved electrocatalytic activity.
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