Journal
SCIENCE CHINA-MATERIALS
Volume 63, Issue 2, Pages 240-248Publisher
SCIENCE PRESS
DOI: 10.1007/s40843-019-1171-3
Keywords
cobalt ferrite phosphides; 3D ordered mesoporous structure; highly efficient electrocatalysts; water splitting
Categories
Funding
- National Natural Science Foundation of China [51571072, 51871078]
- Heilongjiang Science Foundation [E2018028]
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Developing low-cost and earth-abundant electrocatalysts with high performance for electrochemical water splitting is a challenging issue. Herein, we report a facile and effective way to fabricate three-dimension (3D) ordered mesoporous Co1-xFexP (x=0, 0.25, 0.5, 0.75) electrocatalyst. Benefiting from 3D ordered mesoporous pore channels and composition optimization, the Co0.75Fe0.25P exhibits excellent electrocatalytic activities with low overpotentials of 270 and 209 mV at 10 mA cm(-2) for oxygen evolution reaction (OER) and hydrogen evolution reaction (HER), respectively, in the alkaline electrolyte along with a durable electrochemical stability. In addition, as both the cathode and anode, the Co0.75Fe0.25P also exhibits superior electrolysis water splitting performance with only an applied voltage of 1.63 V to attain a current density of 10 mA cm(-2) without obvious decay for 18 h, indicating that the Co0.75Fe0.25P is an efficient electrocatalyst for overall water splitting.
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