About this Abstract |
| Meeting |
MS&T26: Materials Science & Technology
|
| Symposium
|
Ceramics for Clean Hydrogen
|
| Presentation Title |
Direct Ink Writing of High Temperature Perovskite Catalysts for Solar Thermochemical Hydrogen Production |
| Author(s) |
Juan Claudio Nino, Ayden Israel, Rohan Thota, Yogesh Ghadge, Durgesh Ranjan, Jonathan Scheffe |
| On-Site Speaker (Planned) |
Juan Claudio Nino |
| Abstract Scope |
Advanced porous structures for thermochemical hydrogen production are of interest to the solar thermal community due to their favorable heat transfer properties and reaction kinetics. Direct ink writing (DIW) has shown promise in manufacturing porous structures with high heat conduction and surface area. We will show that under isothermal cycling, DIW structures based on La-Ga-Sr-Mn-O (LSMG) perovskites achieve higher normalized hydrogen yields and enhanced thermal stability than current state-of-the-art structures. We will demonstrate LSMG inks with a shear index of 0.584 and a dynamic yield stress of ~1.5 kPa tailored for the DIW production of porous monoliths with complex internal geometries. The ink development for and the effects of suspension components on rheology, resulting printing regimes, and CAD model considerations will be described. We will compare the performance of additively manufactured LSMG foams with those produced by the replica method in terms of hydrogen yield and thermal conductivity. |
