Self-Decorated MnO Nanoparticles on Double Perovskite Solid Oxide Fuel Cell Anode by in Situ Exsolution

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ACS Sustainable Chemistry and Engineering, ISSN: 2168-0485, Vol: 5, Issue: 10, Page: 9207-9213

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Sengodan, Sivaprakash; Ju, Young-Wan; Kwon, Ohhun; Jun, Areum; Jeong, Hu Young; Ishihara, Tatsumi; Shin, Jeeyoung; Kim, Guntae
American Chemical Society (ACS); AMER CHEMICAL SOC
Chemistry; Environmental Science; Chemical Engineering; Energy; Ceramic anode; Exsolution; Layered perovskite; Oxygen nonstoichiometry; Solid oxide fuel cells
article description
Surface decorated electrocatalytic nanoparticles coupled with oxide materials can effectively improve the electrochemical catalytic properties in energy storage and conversion application, such as chemical processes, electrolysis, batteries, and fuel cells. Particularly, Mn rich simple perovskite-type RBaMnO (R = Pr and Nd) undergoes a phase transition to layered perovskite RBaMnO at high temperature reduced condition. During this phase transition, the exsolution of MnO nanoparticles (MnO-NP) from the bulk layered perovskite NdBaMnO is observed. For in-depth investigation on the exsolution of MnO, a layered NdBaMnO thin film is fabricated with pulsed laser deposition and characterized by transmission electron microscopy. For the first time, this paper reports clear evidence of self-decorated MnO nanoparticles on a layered NdBaMnO matrix via exsolution process and their electro catalytic effect in solid oxide fuel cells.