ChemRxiv
These are preliminary reports that have not been peer-reviewed. They should not be regarded as conclusive, guide clinical practice/health-related behavior, or be reported in news media as established information. For more information, please see our FAQs.
Operando visualization of morphological dynamics in all-solid-state batteries.pdf (8.1 MB)
0/0

Operando Visualization of Morphological Dynamics in All-Solid-State Batteries

preprint
submitted on 20.06.2019 and posted on 20.06.2019 by Xiaohan Wu, Juliette Billaud, Iwan Jerjen, Federica Marone, Yuya Ishihara, Masaki Adachi, Yoshitaka Adachi, Claire Villevieille, Yuki Kato

All-solid-state batteries are considered as attractive options for next-generation energy storage owing to the favourable properties (unit transference number and thermal stabilities) of solid electrolytes. However, there are also serious concerns about mechanical deformation of solid electrolytes leading to the degradation of the battery performance. Therefore, understanding the mechanism underlying the electro-mechanical properties in SSBs are essentially important. Here, we show three-dimensional and time-resolved measurements of an all-solid-state cell using synchrotron radiation x-ray tomographic microscopy. We could clearly observe the gradient of the electrochemical reaction and the morphological evolution in the composite layer. Volume expansion/compression of the active material (Sn) was strongly oriented along the thickness of the electrode. While this results in significant deformation (cracking) in the solid electrolyte region, we also find organized cracking patterns depending on the particle size and their arrangements. This study based on operando visualization therefore opens the door towards rational design of particles and electrode morphology for all-solid-state batteries.

History

Email Address of Submitting Author

katoyuki.2.2.4@gmail.com

Institution

Toyota Motor Europe NV/SA

Country

Belgium

ORCID For Submitting Author

0000-0002-2402-9815

Declaration of Conflict of Interest

No conflict of interest

Exports