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March 01, 2010

Planar Energy’s Solid-state Battery Potential for Triple Lithium Ion Energy Density at Half the Cost - University of Central Florida Confirms

Researchers at the University of Central Florida’s (UCF) Advanced Materials Processing and Analysis Center (AMPAC)) have verified findings by Planar Energy that could lead to dramatic cost and performance improvements in large format batteries required for practical electric vehicles.

AMPAC scientists independently confirmed that Planar Energy’s new generation of solid state electrolytes have ionic conductivity metrics comparable to liquid electrolytes used in traditional chemical batteries.

It will allow solid state battery fabrication that will enable manufacturers to increase their capacity by 200-to-300 percent, while reducing costs more than 50 percent,‖ he continued. ―This is what the automotive industry needs to make electric vehicles practical and affordable.

Planar Energy was on of six projects that received funding for breakthrough energy storage in the first round of ARPA-E projects



―Our partnership with UCF and the FHTCC has enabled us to validate what our team at Planar Energy had previously concluded: that we can cut the cost of manufacturing a battery by 75 percent while creating efficiency and storage-capacity improvements two or three times greater than conventional processes, most notably those involving lithium-ion.

Following are highlights of key test results:
* Planar Energy has identified a new class of solid state electrolytes that have conductivity of 10-4 in measured samples and 10-3 in functional battery calculations. The conductivity ranges displayed allow for high-rate batteries required in automotive applications.
* Planar Energy’s solid state electrolyte materials are deposited – stacked – as thin films directly on active layers in the battery, eliminating the historic process of having to deposit films on separate substrates and then mechanically joining them.
* Planar Energy’s electrolytes demonstrate the same performance level of liquid electrolytes currently used by the lithium-ion industry, but they are in a solid form factor.
* Planar Energy’s change in form factor greatly simplifies the battery manufacturing process and enables existing battery chemistries to function at 95 percent of their theoretical value.
* Planar Energy’s batteries will be intrinsically safe, allowing customers to further reduce packaging requirements, as well as simplify the battery management system.
* Planar Energy’s batteries have virtually no self discharge, allowing them to sit for long periods of time while retaining their charge. Traditional lithium-ion batteries have high discharge rates that are problematic for automotive applications.

In 2008 Planar Energy identified a new deposition technology, Streaming Protocol for Electroless Electrochemical Deposition, or SPEED, a high speed roll-to-roll deposition process that is dramatically more flexible and scalable than existing methods, allowing Planar Energy to overcome production barriers to low-cost solid state batteries.


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