Achieving Higher Activity of Acidic Oxygen Evolution Reaction Using an Atomically Thin Layer of IrO x over Co 3 O 4
Argonne National Laboratory · Center for Nanoscale Materials · +5 more institutions
Abstract
The development of electrocatalysts with reduced iridium (Ir) loading for the oxygen evolution reaction (OER) is essential to produce low-cost green hydrogen from water electrolysis under acidic conditions. Herein, an atomically thin layer of iridium oxide (IrOx) has been uniformly dispersed onto cobalt oxide (Co3O4) nanocrystals to improve the efficient use of Ir for acidic OER. In situ characterization and theoretical calculations reveal that compared to the conventional IrOx cluster, the atomically thin layer of IrOx shows stronger interaction with the Co3O4 and consequently higher OER activity due to the Ir–O–Co bond formation at the interface. Equally important, the facile synthetic method and the…
Citation impact
- FWCI
- 16.73
- Percentile
- 100%
- References
- 54
Authors
8- GLGengnan LiCorresponding
Argonne National Laboratory, Center for Nanoscale Materials
- APAdyasa Priyadarsini
Florida Agricultural and Mechanical University
- ZXZhenhua Xie
Brookhaven National Laboratory, Columbia University
- SKSinwoo Kang
Brookhaven National Laboratory
- YLYuzi Liu
Argonne National Laboratory, Center for Nanoscale Materials
Topics & keywords
- Chemistry
- Oxygen
- Layer (electronics)
- Thin film
- Oxygen evolution
- Chemical engineering
- Inorganic chemistry
- Nanotechnology
Funding
- NSNational Science FoundationAwards: 2137603, 2138259, 2138296, 2138307, 2138286
- UDU.S. Department of EnergyAwards: No. DE-SC0012704, SC0012704
- OOOffice of ScienceAwards: No. DE-SC0012704, Contract No. DE-SC0012704, SC0012704, DE-SC0012704
- BEBasic Energy SciencesAwards: Contract No. DE-SC0012704, DE-SC0012704, DE-SC0024485, No. DE-SC0012704, BES-ERCAP27318, SC0012704, DE-SC0012653