High Throughput Synthesis and Screening of Oxygen Reduction Catalysts in the MTiO3 (M = Ca, Sr, Ba) Perovskite Phase Diagram.
Alexandra R GrovesThomas E AshtonJawwad A DarrPublished in: ACS combinatorial science (2020)
A library of 66 perovskite BaxSryCazTiO3 (x + y + z = 1) samples (ca. three grams per sample) was made in ca. 14 h using a high-throughput continuous hydrothermal flow synthesis system. The as-synthesized samples were collected from the outlet of the process and then cleaned and freeze-dried before being evaluated individually as oxygen reduction catalysts using a rotating disk electrode testing technique. To establish any correlations between physical and electrochemical characterization data, the as-synthesized samples were investigated using analytical methods including BET surface area, powder X-ray diffraction (PXRD) and in selected cases, transmission electron microscopy (TEM). The aforementioned approach was validated as being able to quickly identify oxygen reduction catalysts from new libraries of electrocatalysts.
Keyphrases
- electron microscopy
- high throughput
- highly efficient
- transition metal
- single cell
- high efficiency
- room temperature
- metal organic framework
- high resolution
- gold nanoparticles
- mental health
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- solar cells
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- machine learning
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- mass spectrometry
- carbon nanotubes
- dual energy
- heavy metals
- electron transfer