Small-scale batteries less than 1 cm3, often called microbatteries, will be key for powering the internet-of-things as well as many miniature medical implants and devices. In order for such a small battery to deliver useful power, store enough energy, and at the same time being safe and non-toxic for a broad range of conditions, both the materials as well as the battery design need to be reconsidered. Therefore, we develop 3-dimensional battery designs while also employing solid-state electrolyte systems. In this work, construction of highly complex electrode structures and ultrathin layers of electrolytes are areas of research. Modelling of how the current distribution changes when employing 3D-battery designs is also necessary for input on how to build the 3D-battery system.

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