Where is a carbon negative electrode buried in a lithium ion battery?

In cycled Li-ion batteries, the carbon negative electrode is buried under a thin passivating layer referred to as the solid electrolyte interphase (SEI).

Can X-ray tomography help develop polymer-based solid-state batteries?

In light of our results, it follows that X-ray tomography could perform a key role in the development of polymer-based solid-state batteries by pinpointing the areas that are of interest to perform detailed analytical studies.

Can X-ray tomography be used in a polymer-based lithium symmetric cell?

While X-ray tomography is applicable to both anodes and cathodes, with both liquid and solid electrolytes, we will focus on the example of a polymer-based lithium symmetric cell to illustrate our claim. The cell is subjected to cycling at different current densities up to failure.

Are solid-state batteries based on polymer electrolytes?

Nowadays, most solid-state batteries are based on solid polymer electrolytes, as they present low flammability, flexible processability, and increased tolerance to vibration, shock, and mechanical deformation compared to liquid electrolytes [ , , ].

How can we detect morphological and chemical evolution in Li-metal batteries?

Learn more. Using complementary in situ characterizations including atomic force microscopy and X-ray photoelectron spectroscopy, we directly detected morphological/chemical evolution, Li plating/stripping processes and SEI dynamics in all-solid-state Li-metal batteries.

How X-ray tomography reveals lithium-metal battery failure?

In situ X-ray tomography for comprehending lithium-metal battery failure scenarios. 3D tomogram reveals polymer electrolyte thickening, puncturing and contact loss. Resistance measurements consistent with contact loss and subsequent cell shorting. Ex situ XPS identifies Li salts and organic compounds as source for thickening.