A highly active and stable IrO x /SrIrO 3 catalyst for the oxygen evolution reaction
Franciscan University of Steubenville · Interface (United States) · +2 more institutions
Abstract
Oxygen electrochemistry plays a key role in renewable energy technologies such as fuel cells and electrolyzers, but the slow kinetics of the oxygen evolution reaction (OER) limit the performance and commercialization of such devices. Here we report an iridium oxide/strontium iridium oxide (IrO x /SrIrO 3 ) catalyst formed during electrochemical testing by strontium leaching from surface layers of thin films of SrIrO 3 . This catalyst has demonstrated specific activity at 10 milliamps per square centimeter of oxide catalyst (OER current normalized to catalyst surface area), with only 270 to 290 millivolts of overpotential for 30 hours of continuous testing in acidic electrolyte. Density functional theory…
Citation impact
- FWCI
- 51.65
- Percentile
- 100%
- References
- 48
Authors
11- LCLinsey C. Seitz
Franciscan University of Steubenville, Interface (United States), Stanford University
- CFColin F. Dickens
Franciscan University of Steubenville, SLAC National Accelerator Laboratory, Interface (United States), Stanford University
- KNKazunori Nishio
SLAC National Accelerator Laboratory, Stanford University
- YHYasuyuki Hikita
SLAC National Accelerator Laboratory
- JHJoseph H. Montoya
SLAC National Accelerator Laboratory, Interface (United States)
Topics & keywords
- Overpotential
- Catalysis
- Oxygen evolution
- Strontium
- Electrolyte
- Oxide
- Ruthenium oxide
- Inorganic chemistry
- Affordable and clean energy