Jump to main content
Jump to site search

Issue 32, 2020
Previous Article Next Article

IrCo nanocacti on CoxSy nanocages as a highly efficient and robust electrocatalyst for the oxygen evolution reaction in acidic media

Author affiliations

Abstract

Developing highly efficient Ir-based electrocatalysts for the oxygen evolution reaction (OER) has been an important agenda in spearheading the water splitting technology. In this study, the synthesis of IrCo nanocacti on CoxSy nanocages (ICS NCs) is demonstrated by utilizing CoO@CoxSy nanoparticles as reactive nanotemplates. In addition to the high catalytic activities with a low overpotential of 281 mV at 10 mA cm−2 and an outstanding mass activity of 1285 mA mgIr−1 at 1.53 V, the ICS NCs endure a prolonged OER test for over 100 h, greatly outperforming other previously reported Ir-based electrocatalysts. This work suggests that the unique hetero-nanostructure of IrCo/CoxSy induces in situ S doping during electrochemical oxidation and the beneficial effect of S doping on the enhanced stability of ICS NCs for the OER.

Graphical abstract: IrCo nanocacti on CoxSy nanocages as a highly efficient and robust electrocatalyst for the oxygen evolution reaction in acidic media

Back to tab navigation

Supplementary files

Article information


Submitted
18 Jun 2020
Accepted
12 Jul 2020
First published
21 Jul 2020

Nanoscale, 2020,12, 17074-17082
Article type
Paper

IrCo nanocacti on CoxSy nanocages as a highly efficient and robust electrocatalyst for the oxygen evolution reaction in acidic media

J. Kim, T. Kwon, S. Yu, S. Y. Chun, A. Oh, J. M. Kim, H. Baik, H. C. Ham, J. Y. Kim, K. Kwak and K. Lee, Nanoscale, 2020, 12, 17074
DOI: 10.1039/D0NR04622A

Social activity

Search articles by author

Spotlight

Advertisements