Publications
Detailed Information
Modulating the valence electronic structure using earth-abundant aluminum for high-performance acidic oxygen evolution reaction
Cited 4 time in
Web of Science
Cited 4 time in Scopus
- Authors
- Issue Date
- 2023-12
- Publisher
- CELL PRESS
- Citation
- CHEM, Vol.9 No.12, pp.3600-3612
- Abstract
- Iridium oxide (IrO2) is the most widely used anode catalyst for a proton exchange membrane water electrolyzer (PEMWE). However, its high cost and poor intrinsic activity impede its practical application, which calls for the development of catalysts devoid of Ir or with minimal Ir content. Herein, we designed a facile synthetic route incorporating Al, a p-block metal, into RuO2 and RuIrOx for a durable PEMWE. Al dopants favorably modulate the valence electronic structure of Ru–O hybridized orbitals, which tunes the adsorption energy of oxygen intermediates, consequently promoting the formation of O–O bonds. The optimized Al-doped RuIrOx requires an overpotential of 178 mV at 10 mA cm−2 and maintains the high activity for over 300 h at 100 mA cm−2. In a PEMWE, a high current density of 4.1 A cm−2 at 2.0 V was achieved with negligible performance degradation at 1.0 A cm−2 for 60 h.
- ISSN
- 2451-9308
- Files in This Item:
- There are no files associated with this item.
Item View & Download Count
Items in S-Space are protected by copyright, with all rights reserved, unless otherwise indicated.