Tomography shows high potential of copper sulfide solid-state batteries

3D reconstruction of the formation of a copper crystallite in a copper sulfide particle (CuS) during the discharge of a lithium CuS solid-state battery. The volume expansion can lead to the formation of cracks (blue). Credit: K. Dong / HZB

Solid-state batteries (SSBs) are currently regarded as a promising battery technology of the future. Compared to the current lithium-ion batteries, which are used in mobile phones, laptops and electric vehicles, SSBs could achieve even higher energy densities and better safety. In addition to research institutes, all major automotive companies are therefore also researching this technology.

The main feature of the technology …

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