About this Abstract |
| Meeting |
MS&T26: Materials Science & Technology
|
| Symposium
|
Energy Materials for Sustainable Development
|
| Presentation Title |
Accelerated Synthesis of Wadsley-Roth High-Rate Battery Anodes |
| Author(s) |
Ruby Kavanagh, Jessica Lyza, Iva Milisavljevic, Roque Santiago, Morgan Stefik, Scott Misture |
| On-Site Speaker (Planned) |
Ruby Kavanagh |
| Abstract Scope |
This work compares phase evolution in the Nb-W-Mo-O system synthesized via conventional solid-state methods vs. an activated synthesis route incorporating partially reduced precursors. Activated synthesis lowers formation temperatures and improves phase purity, an important result because Wadsley-Roth (WR) oxides are difficult to synthesize in pure form. In/ex-situ X-ray diffraction (XRD) were used to track phase development and identify temperature-composition relationships governing WR phase formation. Activated synthesis was employed to construct partial phase diagrams, enabling systematic evaluation of temperature, composition, and redox effects. Secondary phases were observed across multiple compositions; their origins were investigated through phase identification and energy-dispersive spectroscopy (ESD) via electron microscopy. Scanning electron microscopy (SEM) was used to characterize powder morphology, including particle size and agglomeration, which are strongly correlated to the synthesis method. These results establish synthesis-structure relationships and guide extension of activation-based strategies to new compositions. |