Ink Chemistry and Rheology for Printed Power Sources

Ink Chemistry and Rheology for Printed Power Sources

Sang-Young Lee
UNIST

The forthcoming ubiquitous energy era, which will find the widespread use of flexible/wearable electronics, the Internet-of-Things (IoTs), and electric vehicles (EVs), has stimulated the pursuit of high-energy/safe rechargeable power sources. Here, we present a new class of printable electrolytes as a new material/process strategy to develop all-solid-state lithium-ion batteries (LIBs). Combining the printable electrolytes with solvent-drying-free, ultraviolet (UV)-curing-assisted multistage printing allows facile fabrication of (in-series/in-parallel) bipolar-stacked all-solid-state LIBs onto complex-shaped objects. The printed all-solid-state LIBs show exceptional performance in mechanical flexibility, form factors and abuse tolerance (nonflammability) that lie far exceed those achievable with conventional LIB technologies.