Scalable Processing Routes for Solid-State Energy Conversion and Storage Devices
type: CreativeWork
description: Solid-state electrochemical devices all have at least one central component in common, an ion-conductive solid electrolyte (SE). The SE is the basis of the design of both all-solid-state batteries (ASSBs) and solid oxide fuel cells (SOFCs) and is a major determinate for their performance and the economic value in electrochemical storage and conversion applications. The optimization of the SE in ASSBs and SOFCs along with the entire electrochemical cell is mired with challenges concerning efficient transport of electronic, ionic, and fuel species (in the case of fuel cells) when designing cells to be made with scalable processes. Nonetheless, the transport properties of structures in SOFCs and ASSBs as they would be in a product design (thin coatings) are critical issues related to performance limitations and manufacturability. Chapter One briefly reviews solid-state electrochemistry, and Chapter Two provides a brief review specifically of SOFCs and ASSBs with emphasis on scalable processing of cells. Chapters Three and Four investigate scalable processes for SEs and composite cathodes for sulfide-based ASSBs and demonstrate how polymer affects dispersion stability and electrochemical properties. Chapter Three reveals how strict control of solid loading of a slurry prepared for tape casting SEs enables highly uniform, dense coatings suitable for ASSBs, resulting in ionic conductivity similar to that of the pristine powder but with 11 times less area-specific resistance due to a reduction in thickness of the SE. It is revealed that only 3 wt.% changes in the solid loading allow for significant changes in the dispersion stability based upon extended forms of Derjaguin, Landau, Verwey, and Overbeek (DLVO) theory and result in coatings four times more uniform, based upon an internally developed evaluation tool. A dry, solvent-free coating process for composite cathodes was demonstrated in Chapter Four and outperformed coatings prepared with a wet, tape casting process by…
abstract: Solid-state electrochemical devices all have at least one central component in common, an ion-conductive solid electrolyte (SE). The SE is the basis of the design of both all-solid-state batteries (ASSBs) and solid oxide fuel cells (SOFCs) and is a major determinate for their performance and the economic value in electrochemical storage and conversion applications. The optimization of the SE in ASSBs and SOFCs along with the entire electrochemical cell is mired with challenges concerning efficient transport of electronic, ionic, and fuel species (in the case of fuel cells) when designing cells to be made with scalable processes. Nonetheless, the transport properties of structures in SOFCs and ASSBs as they would be in a product design (thin coatings) are critical issues related to performance limitations and manufacturability. Chapter One briefly reviews solid-state electrochemistry, and Chapter Two provides a brief review specifically of SOFCs and ASSBs with emphasis on scalable processing of cells. Chapters Three and Four investigate scalable processes for SEs and composite cathodes for sulfide-based ASSBs and demonstrate how polymer affects dispersion stability and electrochemical properties. Chapter Three reveals how strict control of solid loading of a slurry prepared for tape casting SEs enables highly uniform, dense coatings suitable for ASSBs, resulting in ionic conductivity similar to that of the pristine powder but with 11 times less area-specific resistance due to a reduction in thickness of the SE. It is revealed that only 3 wt.% changes in the solid loading allow for significant changes in the dispersion stability based upon extended forms of Derjaguin, Landau, Verwey, and Overbeek (DLVO) theory and result in coatings four times more uniform, based upon an internally developed evaluation tool. A dry, solvent-free coating process for composite cathodes was demonstrated in Chapter Four and outperformed coatings prepared with a wet, tape casting process by…
author: Emley, Benjamin Jason
language: eng
keywords: Solid-State Battery, Solid Oxide Fuel Cell
date published: 2021-12
date modified: 2026-07-24T02:32:54Z
provider: University of Houston
publisher: Networked Digital Library of Theses and Dissertations
type: WebPage
source organization: University of Houston

PropertyValue
property ID: Handle
value: https://hdl.handle.net/10657/9287