Journal
NANOSCALE
Volume 9, Issue 26, Pages 9230-9237Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c7nr03182c
Keywords
-
Categories
Funding
- NSFC [21571089, 41573128, 21403115, 21522305]
- Fundamental Research Funds for the Central Universities [lzujbky-2016-k02, lzujbky-2016-38, Lzujbky-2014-177]
- U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences [DE-AC02-06CH11357]
Ask authors/readers for more resources
A rational design of highly active and robust catalysts based on earth-abundant elements for hydrogen evolution reaction (HER) is essential for future renewable energy applications. Herein, we report the synthesis of a new class of ultrathin metallic CuFeS2 nanosheets (NSs) with abundant exposed high-index {0 (2) over bar4} facets. They serve as a robust catalyst for the HER with a lower onset potential of 28.1 mV, an over-potential of only 88.7 mV (at j = 10 mA cm(-2)) and remarkable long-term stability in 0.5 M H2SO4, which make them the best system among all the reported non-noble metal catalysts. The theoretical calculations reveal that the mechanistic origin for such a high HER activity should be attributed to the excess S(2-)active sites on the exposed {0 (2) over bar 4} high-index facets of CuFeS2 NSs, which have a rather favorable Gibbs free energy for atomic hydrogen adsorption. The present work highlights the importance of designing ultrathin metallic chalcopyrite nanosheets with high-index facets in order to increase the number of active sites for boosting the HER performance.
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