Novel, large area scalable polycrystalline Zn1-xCoxO films RF sputtered from a single mixed target for electrochemical water oxidation
Autor: | Wolfram Calvet, Matthias Driess, Th. Schedel-Niedrig, C. Goebel, Iver Lauermann, Anahita Azarpira, Sören Selve, Johannes Pfrommer, Alexander Steigert, Michael Lublow, S. Mikhailov, Reiner Klenk |
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Rok vydání: | 2020 |
Předmět: |
Materials science
Nanocomposite Renewable Energy Sustainability and the Environment Oxygen evolution Energy Engineering and Power Technology RF sputtered films Electron microscopy TEM Oxygen evolution reaction Electrochemistry Transition metal oxides X ray absorption spectroscopy NEXAFS 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics Electrocatalyst 01 natural sciences 0104 chemical sciences Amorphous solid Fuel Technology Chemical engineering Specific surface area Crystallite Thin film 0210 nano-technology |
Zdroj: | International Journal of Hydrogen Energy. 45:9380-9385 |
ISSN: | 0360-3199 |
DOI: | 10.1016/j.ijhydene.2020.01.216 |
Popis: | The compound semiconductor Zn1-xCoxO (x = 0.42; ZnO:Co) has recently gained interest as a highly active electrocatalyst material for water oxidation (WOCs). We report on the significant structural and electronic transformations under anodic oxygen evolution reaction conditions of a novel, large area scalable sputtered ZnO:Co electrocatalyst. ZnO:Co sputtered films showed the transition of the polycrystalline ZnO:Co electrocatalyst material to a partially amorphous nanocomposite (ZnO:Co/Co(OH)2/CoOOH). A high reactivity of the electrocatalyst material compensates effectively the low specific surface area of sputtered electrocatalyst thin films. The aim of this work is to examine the polycystral morphology of sputtered electrocatalyst thin film material, which can be also produced industrially on large areas and has a high WOC performance. |
Databáze: | OpenAIRE |
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