Jump to main content
Jump to site search
Access to RSC content Close the message box

Continue to access RSC content when you are not at your institution. Follow our step-by-step guide.


Issue 27, 2017
Previous Article Next Article

Nanoporous IrO2 catalyst with enhanced activity and durability for water oxidation owing to its micro/mesoporous structure

Author affiliations

Abstract

Herein, we report a nanoporous IrO2 catalyst with a surface area of 363.3 m2 g−1, the highest ever reported. The IrO2 catalysts were prepared by a facile ammonia-induced pore-forming method, and efficiently scaled up to several kilograms. Bimodal micro/mesopores were created at once without using a template. For the IrO2 (1 : 100)-450 °C (H2IrCl6 : NH3·H2O of 1 : 100) catalyst, the overpotential to attain a current density of 10 mA cm−2 for water oxidation was only 282 mV, and furthermore, its excellent durability was confirmed by accelerated durability tests. Moreover, the overall voltage to achieve a current density of 1000 mA cm−2 in a water electrolysis cell was only 1.649 V, making IrO2 (1 : 100)-450 °C a highly attractive catalyst for water electrolysis applications.

Graphical abstract: Nanoporous IrO2 catalyst with enhanced activity and durability for water oxidation owing to its micro/mesoporous structure

Back to tab navigation

Supplementary files

Article information


Submitted
24 Apr 2017
Accepted
08 Jun 2017
First published
13 Jun 2017

Nanoscale, 2017,9, 9291-9298
Article type
Communication

Nanoporous IrO2 catalyst with enhanced activity and durability for water oxidation owing to its micro/mesoporous structure

G. Li, S. Li, M. Xiao, J. Ge, C. Liu and W. Xing, Nanoscale, 2017, 9, 9291
DOI: 10.1039/C7NR02899G

Social activity

Search articles by author

Spotlight

Advertisements