Fast Charging, Solid-State, Roll-to-Roll Processed Li Metal Batteries Enabled by Intercalated Ions in Cellulose Molecular Channels

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OPEN 2021
College Park, Maryland
Project Term:
06/24/2022 - 06/23/2025

Technology Description:

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.

Potential Impact:

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.


UMD’s cellulose-based batteries will be capable of enabling electric vehicles (EV) with high energy and fast charge, ensuring reliable transportation.


This technology could enable wider EV adoption, reducing U.S. reliance on fossil fuels that create harmful greenhouse gas emissions.


The price of the fast-charging CNF-based SSE is estimated be < 60 $/kWh, much lower than current commercial Li-ion batteries and other potential solid-state batteries.


ARPA-E Program Director:
Dr. Halle Cheeseman
Project Contact:
Prof. Liangbing Hu
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