| About this Abstract |
| Meeting |
MS&T22: Materials Science & Technology
|
| Symposium
|
ACerS Richard M. Fulrath Award Session
|
| Presentation Title |
Fabrication and Morphology Control of Advanced Glass-Ceramics for Next-generation All-Solid-State Batteries |
| Author(s) |
Tsuyoshi Honma |
| On-Site Speaker (Planned) |
Tsuyoshi Honma |
| Abstract Scope |
The glassy state is thermodynamically non-equilibrium and exhibits softening, viscous flow, and crystallization upon reheating. Glass-ceramics are hybrid ceramics that combine the glassy phases with isotropic physical properties with the crystalline phases that exhibit unique properties. The morphology of glass-ceramics can be controlled from nanometer to micrometer range depends on the thermal history (by an electric furnace or laser irradiation). We will talk about our recent progress on phosphate glass-ceramics for sodium-ion-batteries and all-solid-state batteries. Sodium iron phosphate (Na2FeP2O7) was found to be in a glassy state by a conventional melting method, and the crystals formed by recrystallization served as the active cathode material for sodium-ion batteries. The cathode glass-ceramics successfully adhered to a solid electrolyte using a supercooled state above the glass transition temperature. Adhesion of the glass to the solid electrolyte can be effectively achieved by heat treatment in an electric furnace and by local heating by laser irradiation. |