Abstract
Researchers at the University of Central Florida have
developed an inexpensive battery cell that overcomes the safety hazards,
performance problems and capacity loss associated
with using lithium metal as an anode electrode in lithium-ion (rechargeable)
batteries. The UCF invention includes a novel semi-liquid coating that forms a stable,
evenly distributed solid electrolyte interface (SEI) buffer between the
electrolyte layer and the surface of the lithium metal anode.With the innovation, manufacturers
now have the technology to produce next-generation energy storage devices as
well as better lithium-ion batteries.
Technical Details
The invention comprises a battery cell with an inexpensive
buffer layer (coating) and a method of applying
it onto a lithium metal electrode surface. Made
of a semi-liquid gallium-indium-tin eutectic alloy, the buffer forms a
stable and conformal interfacial layer that deters dendritic growth and
protects the electrolyte during charging/discharging
cycles. Since the alloy is in a liquid state at room temperature, it can
maintain good contact with the lithium
metal surface. Also, by solidifying in
the presence of lithium ions and liquefying in the absence of lithium ions, the SEI allows the battery to safely achieve coulombic efficiency over multiple cycles
without losing capacity.
Partnering Opportunity
The research team is looking for partners to develop the
technology for commercialization.
Stage of Development
Prototype available.
Benefit
Low costMaintains good contact with the lithium surface, improving its durabilityCan be created using traditional roll-to-roll manufacturing methodsSelf-healing liquid does not crack (compared to solid SEI layers)Market Application
Any lithium batteries that use lithium metal anode (lithium-ion, lithium-air, lithium-sulfur)Anti-corrosion coatingAutomobile batteries
Brochure
