About this Abstract |
Meeting |
MS&T23: Materials Science & Technology
|
Symposium
|
Energy Materials for Sustainable Development
|
Presentation Title |
Towards Designing Mn- and Fe-rich Cathode Materials in Sodium-ion Batteries |
Author(s) |
Hugh B. Smith, Iwnetim Abate |
On-Site Speaker (Planned) |
Hugh B. Smith |
Abstract Scope |
Decarbonizing transportation, grid energy, and industrial processes requires low-cost batteries made from abundant, environmentally friendly, sustainable elements in the critical minerals supply chain. Towards these ends, Mn- and Fe-rich sodium-ion battery cathodes are a promising option. However, the practical use of these materials is inhibited by their structural instability upon deep desodiation. We investigated the role of composition and defect engineering to achieve stable and reversible electrochemistry with high-energy density. First-principles calculations, X-ray diffraction and in-situ X-ray absorption spectroscopy were performed to elucidate the redox mechanism and determine chemical and structural stability. Our findings present new design principles at the nexus of composition and defect engineering for intercalation electrodes with ideal characteristics for applications in energy storage and beyond. |