|About this Abstract
||Materials Science & Technology 2019
||Controlled Synthesis, Processing, and Applications of Structural and Functional Nanomaterials
||Scalable Electrospinning of CsH2PO4 Micro- and Nanometer Fibers for Solid Acid Fuel Cell Applications
||Ryan J. McCarty, Konstantinos P. Giapis, Fernando Diaz Campos, Mandy Abbott, Calum R.I. Chisholm
|On-Site Speaker (Planned)
||Ryan J. McCarty
We designed and demonstrated a scalable approach to synthesize micro- and nanometer-sized fibers of Cesium dihydrogen phosphate (CsH2PO4) for solid acid fuel cell (SAFC) applications. Warm (250C) CsH2PO4 is utilized in SAFCs as an electrolyte membrane material for its high proton conductivity. In this application, high surface area electrodes are thought to increase fuel cell output; electrodes must also be porous to permit gas access. We employed a novel electrospinning device in a humidity-controlled environment to spin a “honey-like” viscus solution of water and CsPO3. After producing fiber mats of CsPO3, we hydrated them with steam to produce CsH2PO4. Unlike most electrospinning devices that use needles and syringes, our device uses rotating drums, which have demonstrated good scalability in the R&D setting and show promise for scaling to industrial sizes.
We also comment on applying electrospinning approaches to other nanoscale ceramics, and the challenges in spinning commonly-avoided vicious materials.