Interfacial degradation of ceramic solid electrolytes in high energy density batteries
Abstract/Contents
- Abstract
- As rechargeable batteries seek higher energy densities, new chemistries are constantly being explored. A general trend in batteries is that reactions with higher degrees of transformation (phase changes, volume expansion, ect.) result in higher energy density systems. These are sometimes termed "conversion" reactions. However, the higher degree of transformation also results in systems which are morphologically unstable, leading to crossover between electrodes of the battery. Solid electrolytes are an attractive option for helping to stabilize conversion reactions in batteries because of their high mechanical stiffness and chemical stability. This work highlights the complex degradation processes which occur when ceramic solid electrolytes are incorporated into full battery systems. Specifically we examine ion exchange, chemical reactions, and mechanical fracture processes in a variety of solid electrolytes. Specifically, we examine the effect of hydronium ion exchange on K-beta'' alumina, (electro)chemical reactions between molten lithium and LLZO, and mechanical fracture processes driven by lithium intrusions in Li3PS4 (LPS) and LLZO via operando X-ray computed tomography (XCT) and operando scanning electron microscopy, respectively.
Description
| Type of resource | text |
|---|---|
| Form | electronic resource; remote; computer; online resource |
| Extent | 1 online resource. |
| Place | California |
| Place | [Stanford, California] |
| Publisher | [Stanford University] |
| Copyright date | 2022; ©2022 |
| Publication date | 2022; 2022 |
| Issuance | monographic |
| Language | English |
Creators/Contributors
| Author | McConohy, Geoffrey Lee |
|---|---|
| Degree supervisor | Chueh, William |
| Thesis advisor | Chueh, William |
| Thesis advisor | Dauskardt, R. H. (Reinhold H.) |
| Thesis advisor | Reed, Evan J |
| Degree committee member | Dauskardt, R. H. (Reinhold H.) |
| Degree committee member | Reed, Evan J |
| Associated with | Stanford University, Department of Materials Science and Engineering |
Subjects
| Genre | Theses |
|---|---|
| Genre | Text |
Bibliographic information
| Statement of responsibility | Geoffrey Lee Usiak McConohy. |
|---|---|
| Note | Submitted to the Department of Materials Science and Engineering. |
| Thesis | Thesis Ph.D. Stanford University 2022. |
| Location | https://purl.stanford.edu/cp182cn3781 |
Access conditions
- Copyright
- © 2022 by Geoffrey Lee McConohy
- License
- This work is licensed under a Creative Commons Attribution Non Commercial 3.0 Unported license (CC BY-NC).
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