# Defect Detection in Solid-State Battery Electrolytes Using Lock-In Thermal Imaging

> Defective regions in battery materials often generate excess or non-uniform heat profiles during operation. Here, we discuss lock-in thermography as a high-sensitivity, spatially-resolved, and non-destructive technique to characterize defects and guide the targeted optimization of new battery materi...

## Metadata
- Authors: Dana B. Sulas, Steve W. Johnston, Natalie Seitzman, Heather A. S. Platt, Mowafak M. Al-Jassim, Harvey L Guthrey
- Journal: Journal of The Electrochemical Society
- Published: 2018-01-01
- DOI: https://doi.org/10.1149/2.0131814jes
- Citations: 14
- Source: OpenAlex
- Access: Open Access

## Technology Hub
- Hub: Battery Technology
- Discipline: Chemistry / Engineering
- Hub URL: https://science-database.com/technology/battery-technology
- Hub llms.txt: https://science-database.com/technology/battery-technology/llms.txt

## Abstract
Defective regions in battery materials often generate excess or non-uniform heat profiles during operation. Here, we discuss lock-in thermography as a high-sensitivity, spatially-resolved, and non-destructive technique to characterize defects and guide the targeted optimization of new battery materials and cell designs. As an example, we thermally image all-solid-state cells with β-Li 3 PS 4 electrolyte, showing point-like heat signatures that correlate with cell breakdown. Based on the current/voltage cycling characteristics and electrochemical impedance spectroscopy, we attribute heating at the breakdown sites primarily to resistive current flow through dendrites. To assist in enabling wider application of lock-in thermography to emerging battery materials, we discuss several parameters necessary to optimize this technique, including the influences of surface thermal emissivity, thermal diffusivity, and lock-in modulation frequency.

## Links
- DOI: https://doi.org/10.1149/2.0131814jes
- OpenAlex: https://openalex.org/W2896432757
- PDF: https://iopscience.iop.org/article/10.1149/2.0131814jes/pdf
- JSON API: https://science-database.com/api/v1/technology/battery-technology

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Paper ID: oa-W2896432757 | Hub: battery-technology