Journal
ADVANCED SCIENCE
Volume 5, Issue 10, Pages -Publisher
WILEY
DOI: 10.1002/advs.201800949
Keywords
bifunctional electrocatalysts; large current density; oxygen evolution; Prussian blue analogues
Categories
Funding
- 973 program of China [2014CB845602]
- NSFC [21401095, 21790052, 21331007, 2167103]
- 111 Project [D17003]
- NSF of Guangdong Province [S2012030006240]
Ask authors/readers for more resources
Industrial application of overall water splitting requires developing readily available, highly efficient, and stable oxygen evolution electrocatalysts that can efficiently drive large current density. This study reports a facile and practical method to fabricate a non-noble metal catalyst by directly growing a Co-Fe Prussian blue analogue on a 3D porous conductive substrate, which is further phosphorized into a bifunctional Fe-doped CoP (Fe-CoP) electrocatalyst. The Fe-CoP/NF (nickel foam) catalyst shows efficient electrocatalytic activity for oxygen evolution reaction, requiring low over-potentials of 190, 295, and 428 mV to achieve 10, 500, and 1000 mA cm(-2) current densities in 1.0 m KOH solution. In addition, the Fe-CoP/NF can also function as a highly active electrocatalyst for hydrogen evolution reaction with a low overpotential of 78 mV at 10 mA cm(-2) current density in alkaline solution. Thus, the Fe-CoP/NF electrode with meso/macropores can act as both an anode and a cathode to fabricate an electrolyzer for overall water splitting, only requiring a cell voltage of 1.49 V to afford a 10 mA cm(-2) current density with remarkable stability. This performance appears to be among the best reported values and is much better than that of the IrO2-Pt/C-based electrolyzer.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available