Ultrasonic Scanning to Observe Wetting and 'Unwetting' in Li-Ion Pouch Cells
| Autor: | Roby Gauthier, Han Ding, Huang Zhenyu, Yue Shen, Yunhui Huang, Michel B. Johnson, J. R. Dahn, J. E. Harlow, Zhe Deng, Aidan Luscombe |
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| Rok vydání: | 2020 |
| Předmět: |
Materials science
Cell swelling 02 engineering and technology Electrolyte 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences 0104 chemical sciences Ion Ultrasonic imaging General Energy Transmittance Ultrasonic sensor Wetting Pouch 0210 nano-technology Biomedical engineering |
| Zdroj: | Joule. 4:2017-2029 |
| ISSN: | 2542-4351 |
| Popis: | Summary An ultrasonic imaging technique has been developed to investigate the internal changes of pouch cells nondestructively. The local ultrasonic transmittance of pouch cells has been measured and used for imaging with a new ultrasonic scanning machine designed and built in-house. The wetting process of the cells is clearly observed via such ultrasonic imaging techniques. Furthermore, ultrasonic transmission images of fresh cells and aged cells with different electrolytes and cycling conditions exhibit very different ultrasonic transmittance, which can be caused by electrolyte dry-out or “unwetting” due to cell swelling. The ultrasonic imaging technique is a very sensitive method to probe failure mechanisms in Li-ion pouch cells. |
| Databáze: | OpenAIRE |
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