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Developing low‐cost, high‐performance electro‐catalysts is essential for large‐scale application of electrochemical energy devices. In this article, reported are the findings in understanding and controlling oxygen defects in PrBa0.5Sr0.5Co1.5Fe0.5O5+δ (PBSCF) for significantly enhancing the rate of oxygen evolution reaction (OER) are reported. Utilizing surface‐sensitive characterization techniques...
In article number 1901783, Bote Zhao, Yan Chen, Meilin Liu, and co‐workers report their finding in understanding and controlling oxygen defects in PrBa0.5Sr0.5Co1.5Fe0.5O5+δ (PBSCF) for significantly enhancing the oxygen evolution reaction activity. Oxygen vacancies are found to promote OH− affiliation and lower the energy for the formation of O*. However, oxygen vacancies also increase the energy...
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