期刊
CHEMICAL SCIENCE
卷 6, 期 1, 页码 190-196出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c4sc02685c
关键词
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资金
- Danish Ministry of Science's UNIK initiative, Catalysis for Sustainable Energy
- Danish Council for Strategic Research [10-093906]
- Danish National Research Foundation [DNRF54]
Oxygen evolution was investigated on model, mass-selected RuO2 nanoparticles in acid, prepared by magnetron sputtering. Our investigations include electrochemical measurements, electron microscopy, scanning tunneling microscopy and X-ray photoelectron spectroscopy. We show that the stability and activity of nanoparticulate RuO2 is highly sensitive to its surface pretreatment. At 0.25 V overpotential, the catalysts show a mass activity of up to 0.6 A mg(-1) and a turnover frequency of 0.65 s(-1), one order of magnitude higher than the current state-of-the-art.
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