About this Abstract |
| Meeting |
MS&T25: Materials Science & Technology
|
| Symposium
|
Engineering Ceramics: Microstructure-Property-Performance Relations and Applications
|
| Presentation Title |
Design of an Environmentally Safe and Sustainable Process to Synthesize Compositionally Complex Cubic Spinel Ferrites |
| Author(s) |
B. A. Puente-Urbina, G. F. Hurtado-López, Antonio F. Fuentes, F. J. Rodríguez-Varela, F. J. Rodríguez-González, Eric C. Eric C. O'Quinn, Maik Lang, Sagrario M. Montemayor |
| On-Site Speaker (Planned) |
Sagrario M. Montemayor |
| Abstract Scope |
Simple and compositionally complex cubic spinel ferrites with the formula MFe2O4 (M= Co, Cu, Ni, Zn, and Gd) were successfully synthesized using pig iron, an abundant raw material, and high-energy ball milling. Both, simple and compositionally complex ferrites, show the characteristic cubic spinel-like structure, with crystallite sizes ranging from 9 to 220 nm depending on the synthesis experimental conditions. All samples display a ferrimagnetic magnetic behavior; CuFe2O4, NiFe2O4, and multielement ferrites show “S” like hysteresis loops while CoFe2O4 exhibits a more open loop. Saturation magnetization and coercivity values of each ferrite are in well agreement with those previously reported for similar ferrites. Ni0.5Zn0.48Gd0.02Fe2O4.01 shows a good performance for both ORR and OER catalysis, with EJ10 (OER) and E1/2 (ORR) potentials of 1.7282 and 0.6485 V (vs. RHE), respectively, making it a strong candidate for use as an air cathode in Zn–air batteries and related energy conversion and storage technologies. |