Fast Charging, Solid-State, Roll-to-Roll Processed Li Metal Batteries Enabled by Intercalated Ions in Cellulose Molecular Channels
The University of Maryland (UMD) recently invented an elegant and scalable molecular engineering technique for fabricating a cellulose nanofiber (CNF)-based SSE that could overcome many of these problems. Unlike current SSEs, the CNF-based SSE uses natural materials, is easy to process, and is compatible with conventional coating processes. It can also be inexpensively manufactured due to its low material cost and paper-like roll-to-roll manufacturing, both as standalone electrolyte films and the electrolyte portion of solid-state cathodes for lithium ion and metallic lithium cells. UMD’s CNF-based SSEs will be capable of enabling electric vehicles (EV) with high energy and fast charge, promoting U.S. leadership in the EV market.
UMD’s application of expanded cellulose as a disruptive solid-state polymer electrolyte can potentially address all the problems that have prevented fast-charging Li metal batteries.