Impact of Ir-Valence Control and Surface Nanostructure on Oxygen Evolution Reaction over a Highly Efficient Ir–TiO2 Nanorod Catalyst

• Published in: ACS catalysis Vol. 9; no. 8; pp. 6974 - 6986
• Main Authors: Cheng, Junfang, Yang, Jun, Kitano, Sho, Juhasz, Gergely, Higashi, Manabu, Sadakiyo, Masaaki, Kato, Kenichi, Yoshioka, Satoru, Sugiyama, Takeharu, Yamauchi, Miho, Nakashima, Naotoshi
• Format: Journal Article
• Language: English
• Published: American Chemical Society 02.08.2019
• Subjects: iridium-valence-engineering; oxygen evolution reaction (OER); in situ electrochemical XANES and EXAFS; Ir-oxide catalyst

Iridium oxide (IrO x )-based materials are the most suitable oxygen evolution reaction (OER) catalysts for water electrolysis in acidic media. There is a strong demand from industry for improved performance and reduction of the Ir amount. Here, we report a composite catalyst, IrO x –TiO2–Ti (ITOT),...