Description:
<jats:p>While the size of electronic components has shrunk dramatically over the last few decades, the footprint of autonomous electronic devices is today often limited by the battery. Miniaturization of batteries is challenging in particular when using liquid electrolytes based on organic solvents. All-solid-state batteries employing solid-state electrolytes promise to facilitate miniaturization and integration. Current developments of solid-state electrolytes for lithium ion batteries focus mainly on oxide- and thiophosphate-based compounds, but have not yet enabled the fabrication of a competitive all-solid-state battery. </jats:p>
<jats:p>We recently reported the discovery of a superionic phase at room temperature in the class of lithium amide-borohydrides, enabling ionic conductivities comparable to values of common organic liquid electrolytes. We demonstrate good rate performance up to 5C and stable cycling over 400 cycles at 1C in a lithium titanate half-cell battery configuration, indicating high bulk and interfacial stability. Our results demonstrate the potential of lithium amide-borohydrides as solid-state electrolytes for scalable high-power lithium ion batteries.</jats:p>