@article{71856e33e24346f6ba3fd58dbbeb7ce1,
title = "Ruthenium Oxide Nanosheets for Enhanced Oxygen Evolution Catalysis in Acidic Medium",
abstract = " The fabrication of highly active and robust hexagonal ruthenium oxide nanosheets for the electrocatalytic oxygen evolution reaction (OER) in an acidic environment is reported. The ruthenate nanosheets exhibit the best OER activity of all solution-processed acid medium electrocatalysts reported to date, reaching 10 mA cm −2 at an overpotential of only ≈255 mV. The nanosheets also demonstrate robustness under harsh oxidizing conditions. Theoretical calculations give insights into the OER mechanism and reveal that the edges are the origin of the high OER activity of the nanosheets. Moreover, the post OER analyses indicate, apart from coarsening, no observable change in the morphology of the nanosheets or oxidation states of ruthenium during the electrocatalytic process. Therefore, the present investigation suggests that ruthenate nanosheets are a promising acid medium OER catalyst with application potential in proton exchange membrane electrolyzers and beyond. ",
keywords = "DFT calculations, OER mechanism, electrocatalysis, exfoliation, nanosheets, oxygen evolution reaction, water splitting",
author = "Sourav Laha and Yonghyuk Lee and Filip Podjaski and Daniel Weber and Viola Duppel and Schoop, {Leslie M.} and Florian Pielnhofer and Christoph Scheurer and Kathrin M{\"u}ller and Ulrich Starke and Karsten Reuter and Lotsch, {Bettina V.}",
note = "Funding Information: The authors thank Marie-Luise Schreiber for inductively coupled plasma optical emission spectroscopy (ICP-OES) measurements and the Computer Service group at MPI-FKF for providing computational facilities. The authors also gratefully acknowledge the financial support by the Max Planck Society, the Nanosystems Initiative Munich (NIM), e-conversion, the Center for Nanoscience (CeNS) and the Kopernikus/ P2X programme (Cluster FC-A1) of the German Federal Ministry of Education and Research. Y.L. acknowledges the financial support by Deutscher Akademischer Austauschdienst (DAAD). L.M.S. is grateful to the Minerva Fast Track Fellowship for financial support. Funding Information: The authors thank Marie-Luise Schreiber for inductively coupled plasma optical emission spectroscopy (ICP-OES) measurements and the Computer Service group at MPI-FKF for providing computational facilities. The authors also gratefully acknowledge the financial support by the Max Planck Society, the Nanosystems Initiative Munich (NIM), e-conversion, the Center for Nanoscience (CeNS) and the Kopernikus/P2X programme (Cluster FC-A1) of the German Federal Ministry of Education and Research. Y.L. acknowledges the financial support by Deutscher Akademischer Austauschdienst (DAAD). L.M.S. is grateful to the Minerva Fast Track Fellowship for financial support. Publisher Copyright: {\textcopyright} 2019 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim",
year = "2019",
month = apr,
day = "18",
doi = "10.1002/aenm.201803795",
language = "English (US)",
volume = "9",
journal = "Advanced Energy Materials",
issn = "1614-6832",
publisher = "Wiley-VCH Verlag",
number = "15",
}