|About this Abstract
||MS&T22: Materials Science & Technology
||Energy Materials for Sustainable Development
||Ceramic-based Solid-state Sodium-ion Batteries Fabricated in a Single Step via Cold Sintering
||Zane Grady, Julian Fanghanel, Clive A Randall
|On-Site Speaker (Planned)
One of the most prominent solid-state battery (SSB) challenges is the development of processing techniques that allows for the unification of ceramic solid electrolytes with an array of other useful battery materials, including electrode active materials and conductive carbon additives. Specifically, high ceramic sintering temperatures preclude (1) sintering of bulk composites containing dissimilar ceramics and organic materials and (2) the co-sintering of layered structures of solid-state electrodes and electrolytes with low interfacial impedance.
We apply a low-temperature sintering technique, cold sintering, to densify ceramic materials below 400°C. This is applied to prototypical sodium SSB materials to produce dense composites with minimal chemical interaction between constituent phases. An array of composite compositions are cold sintered, demonstrating a systematic optimization approach to SSB design. Subsequently, we demonstrate the ability to cold sinter layers of electrodes and electrolytes with conductive interfaces allowing for cycling at practical temperatures.