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Perovskite for Electrocatalytic Oxygen Evolution at Elevated Temperatures by Fatma Abdelghafar; Xiaomin Xu; San Ping Jiang; Zongping Shao is a Engineering article available to read on EtoBox.

What is Perovskite for Electrocatalytic Oxygen Evolution at Elevated Temperatures about?

The development of advanced electrolysis technologies such as anion exchange membrane water electrolyzer (AEMWE) is central to the vision of a sustainable energy future. Key to the realization of such AEMWE technology lies in the exploration of low‐cost and high‐efficient catalysts for facilitating the anodic oxygen evolution reaction (OER). Despite tremendous efforts in the fundamental research, most of today’s OER works are conducted under room temperature, which deviates significantly with AEMWE’s operating temperature (50–80 °C). To bridge this gap, it is highly desirable to obtain insights into the OER catalytic behavior at elevated temperatures. Herein, using the well‐known perovskite catalyst Ba0.5Sr0.5Co0.8Fe0.2O3−δ (BSCF) as a proof of concept, the effect of temperature on the variation in OER catalytic activity and stability is evaluated. It is found that the BSCF’s activity increases with increasing temperature due to enhanced lattice oxygen participation promoting the lattice oxygen‐mediated OER process. Further, surface amorphization and cation leaching of BSCF become more pronounced as temperature increases, causing a somewhat attenuated OER stability. These new under

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Author

Fatma Abdelghafar; Xiaomin Xu; San Ping Jiang; Zongping Shao

Publisher

Wiley

Published

2024

Language

EN

Field

Engineering (Physical Sciences)