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  Coffee-Waste Templating of Metal Ion-Substituted Cobalt Oxides for the Oxygen Evolution Reaction

Yu, M., Chan, C. K., & Tüysüz, H. (2018). Coffee-Waste Templating of Metal Ion-Substituted Cobalt Oxides for the Oxygen Evolution Reaction. ChemSusChem, 11(3), 605-611. doi:10.1002/cssc.201701877.

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 Urheber:
Yu, Mingquan1, Autor           
Chan, Candace K.2, Autor
Tüysüz, Harun1, Autor           
Affiliations:
1Research Group Tüysüz, Max-Planck-Institut für Kohlenforschung, Max Planck Society, ou_1950290              
2Materials Science and Engineering, School for Engineering of Matter, Transport and Energy, Arizona State University, Tempe, Arizona, United States, ou_persistent22              

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Schlagwörter: cobalt; electrocatalysis; nanostructures; oxygen evolution reaction; waste valorization
 Zusammenfassung: A facile and scalable method using coffee waste grounds as a hard template has been developed to fabricate nanostructured Co3O4 for the oxygen evolution reaction (OER). Co3O4 incorporating metals with different valences (M/Co=1:4; M=Cu, Ni, Fe, Cr, and W) were also prepared with similar sheet-like structures comprising nanosized crystallites. After detailed characterization by X-ray diffraction, electron microscopy, and nitrogen sorption, the oxides were employed as OER electrocatalysts. Substitution of octahedral and tetrahedral sites of the spinel structure with divalent and trivalent transition metals (Cu, Ni, Fe, and Cr) increased the activity of Co3O4 for the OER, whereas incorporation of hexavalent W led to formation of a second crystal phase and significantly higher electrocatalytic performance. Furthermore, this method is easily scaled up for mass production of Co3O4 with the same nanostructure, which is highly desirable for large-scale application.

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Sprache(n): eng - English
 Datum: 2017-10-042017-12-012018-02-09
 Publikationsstatus: Online veröffentlicht
 Seiten: 7
 Ort, Verlag, Ausgabe: -
 Inhaltsverzeichnis: -
 Art der Begutachtung: Expertenbegutachtung
 Identifikatoren: DOI: 10.1002/cssc.201701877
 Art des Abschluß: -

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Titel: ChemSusChem
Genre der Quelle: Zeitschrift
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Ort, Verlag, Ausgabe: Weinheim : Wiley-VCH
Seiten: - Band / Heft: 11 (3) Artikelnummer: - Start- / Endseite: 605 - 611 Identifikator: ISSN: 1864-5631
CoNE: https://pure.mpg.de/cone/journals/resource/1864-5631