| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Materials for Sustainable Hydrogen Energy
|
| Presentation Title |
Fe-W foams as energy storage materials |
| Author(s) |
Ming Chen, Samuel Pennell, David Dunand |
| On-Site Speaker (Planned) |
Ming Chen |
| Abstract Scope |
Iron-based foams can be utilized as large-scale energy storage materials in rechargeable oxide batteries (ROBs), comprising a reversible solid oxide cell (SOC) and an energy storage unit. In ROBs, metallic foams are oxidized by steam to generate H2 which is provided as fuel into SOC (fuel cell mode) during discharging, and then steam is split into H2 and O2- in SOC (electrolyzer mode) to supply reductant for Fe3O4 reduction during charging. Here, we demonstrate microstructural evolution of Fe-W foams with various W compositions during high-temperature redox cycling, i.e., water steam during the oxidation stage and H2 during reduction stage. We also elucidate the critical role of W concentrations on sintering behavior of Fe-W foams and reaction kinetics via in situ X-ray diffraction during redox cycling. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Phase Transformations, Sustainability, Energy Conversion and Storage |