Water Oxidation Catalyzed by Cobalt Oxide Supported on the Mattagamite Phase of CoTe2

Water Oxidation Catalyzed by Cobalt Oxide Supported on the Mattagamite Phase of CoTe2

A chemical synthesis for the cobalt pertelluride mineral mattagamite is reported. Synthetic nanocrystalline mattagamite was investigated for electrochemical water oxidation and showed catalytic activity. Electrochemical water oxidation occurred at an overpotential of 380 mV at 10 mA/cm−2 with a Tafe...

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Veröffentlicht in:ACS catalysis 2016-11, Vol.6 (11), p.7393-7397
Hauptverfasser: McKendry, Ian G, Thenuwara, Akila C, Sun, Jianwei, Peng, Haowei, Perdew, John P, Strongin, Daniel R, Zdilla, Michael J
Format: Artikel
Sprache:eng
Schlagworte:
catalysis (heterogeneous)
catalysis surface
defects
energy storage (including batteries and capacitors)
hydrogen and fuel cells
INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
materials and chemistry by design
mechanical behavior
oxygen evolution reaction (OER)
solar (photovoltaic)
synthesis (novel materials)
water oxidation
water splitting
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Zusammenfassung:A chemical synthesis for the cobalt pertelluride mineral mattagamite is reported. Synthetic nanocrystalline mattagamite was investigated for electrochemical water oxidation and showed catalytic activity. Electrochemical water oxidation occurred at an overpotential of 380 mV at 10 mA/cm−2 with a Tafel slope of 58 mV/decade and with a Faradaic efficiency of 96% and turnover frequency of 0.021 s–1 at 0.5 V.
ISSN:2155-5435
2155-5435
DOI:10.1021/acscatal.6b01878