High-Stability RuO2/MoO3 Electrocatalyst for the Oxygen Evolution Reaction in Proton-Exchange-Membrane Water Electrolysis

作者：Ren, Wenqing; Wang, Kaixin; Lu, Dan; Xu, Chenxi^*

来源：ACS Applied Energy Materials, 2023, 6(24): 12573-12578.

DOI：10.1021/acsaem.3c02795

• proton-exchange-membrane (PEM) waterelectrolysis
• oxygenevolution reaction (OER)
• MoO3 nanosheets
• stability

The slow kinetics and low durability of catalysts in the oxygen evolution reaction (OER) have been long-standing issues. The scarcity and high cost of iridium have posed limitations on its widespread implementation. Therefore, a noniridium catalyst with high activity and stability is the key for proton-exchange-membrane water electrolysis. This work reports a high activity and stability RuO2/MoO3 catalyst for water electrolysis. The catalyst exhibits an oxygen evolution reaction (OER) performance with an overpotential of 267 mV at 10 mA cm(-2) and demonstrates outstanding long-term stability. Moreover, the PEMWE cell-based RuO2/MoO3 anode achieves an overpotential of 0.777 V at 2 A cm(-2) and high stability for 12 h at 1 A cm(-2).