Monolayer NiIr-Layered Double Hydroxide as a Long-Lived Efficient Oxygen Evolution Catalyst for Seawater Splitting
Chinese Academy of Sciences · Fujian Institute of Research on the Structure of Matter · +4 more institutions
Abstract
Promoting the oxygen evolution reaction (OER) with saline water is highly desired to realize seawater splitting. This requires OER catalysts to resist serious corrosion and undesirable chloride oxidation. We introduce a 5d transition metal, Ir, to develop a monolayer NiIr-layered double hydroxide (NiIr-LDH) as the catalyst with enhanced OER performance for seawater splitting. The NiIr-LDH catalyst delivers 500 mA/cm2 at only 361 mV overpotential with ∼99% O2 Faradaic efficiency in alkaline seawater, which is more active than commercial IrO2 (763 mV, 23%) and the best known OER catalyst NiFe-LDH (530 mV, 92%). Moreover, it shows negligible activity loss at up to 650 h chronopotentiometry measurements at an…
Citation impact
- FWCI
- 16.49
- Percentile
- 100%
- References
- 60
Authors
9- HYHanhui You
Chinese Academy of Sciences, Fujian Institute of Research on the Structure of Matter
- DWDongshuang Wu
Kyoto University
- DSDuan‐Hui Si
Chinese Academy of Sciences, Fujian Institute of Research on the Structure of Matter
- MCMinna CaoCorresponding
Chinese Academy of Sciences, Fujian Institute of Research on the Structure of Matter, University of Chinese Academy of Sciences
- FSFanfei Sun
Chinese Academy of Sciences, Shanghai Institute of Applied Physics
Topics & keywords
- Overpotential
- Oxygen evolution
- Water splitting
- Chemistry
- Seawater
- Catalysis
- Hydroxide
- Faraday efficiency
- Life below water