A Bifunctional Perovskite Catalyst for Oxygen Reduction and Evolution1. Issue 18 (28th March 2014)

• Record Type: Journal Article
• Authors: Jung, Jae‐Il; Jeong, Hu Young; Lee, Jang‐Soo; Kim, Min Gyu; Cho, Jaephil
• Is Part Of: Angewandte Chemie international edition. Volume 53:Issue 18(2014)
• Page Start: 4582
• Page End: 4586
• Publication Date: 2014-03-28
• Subjects: electrocatalysts -- heterogeneous catalysis -- oxygen evolution reaction -- oxygen reduction reaction -- perovskites; Chemistry -- Periodicals; 540
• DOI: 10.1002/anie.201311223
• Languages: English
• ISSNs: 1433-7851

Abstract

Abstract: La0.3 (Ba0.5 Sr0.5 )0.7 Co0.8 Fe0.2 O3− 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 La 3+ and local stress on Co‐site sub‐lattice with the cubic perovskite structure. Abstract : The perovskite La0.3 (Ba0.5 Sr0.5 )0.7 Co0.8 Fe0.2 O3− δ (La0.3 ‐5582) is introduced as a bifunctional catalyst to compete with precious‐metal‐based catalysts. The newly introduced perovskite bears rhombohedral phase LaCoO3− δ particles on the surface of the grains.