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A Bifunctional Perovskite Catalyst for Oxygen Reduction and Evolution |
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| Authors: | Dr Jae‐Il Jung Dr Hu Young Jeong Jang‐Soo Lee Dr Min Gyu Kim Prof?Dr Jaephil Cho |
| Institution: | 1. School of Energy and Chemical Engineering, Ulsan National Institute of Science & Technology (UNIST), Ulsan 689‐798 (South Korea) http://jpcho.com;2. UNIST Central Research Facilities (UCRF), Ulsan National Institute of Science & Technology (UNIST), Ulsan 689‐798 (South Korea);3. Beamline Research Division, Pohang Accelerator Laboratory, Pohang University of Science and Technology, Pohang 790‐784 (South Korea) |
| Abstract: | La0.3(Ba0.5Sr0.5)0.7Co0.8Fe0.2O3?δ is a promising bifunctional perovskite catalyst for the oxygen reduction reaction and the oxygen evolution reaction. This catalyst has circa 10 nm‐scale rhombohedral LaCoO3 cobaltite particles distributed on the surface. The dynamic microstructure phenomena are attributed to the charge imbalance from the replacement of A‐site cations with La3+ and local stress on Co‐site sub‐lattice with the cubic perovskite structure. |
| Keywords: | electrocatalysts heterogeneous catalysis oxygen evolution reaction oxygen reduction reaction perovskites |