China Nuvo Solar provides information on Freya Energy’s unique large format lithium ion cells and batteries

WEST PALM BEACH, USA: China Nuvo Solar Energy Inc. provided more information on Freya Energy’s large format lithium ion cells and batteries in response to inquiries from shareholders.

Freya has developed for manufacturing and sale, SAFE, large format lithium ion cells and batteries for high-power and high-energy applications. Freya’s unique technology solves the problem of lithium ion batteries venting and catching fire, and permits the use of the highest energy cathodes available, while providing greater safety than low energy cathodes such as Lithium iron phosphate.

The secret is in Freya’s cell separator. All cells have separators. The separators are thin film sheets inside the cells, which separate the positive cathode from the negative anode. The separators have to be electrically insulating, but have to allow lithium ions to flow from one electrode to the other. Freya’s unique composite technology turns the separators into multi-function safety devices.

Overcharge protection: Freya cells and batteries have overcharge protection, which protects the cells from damage during continuous overcharging. This protection, which is unique in the industry, eliminates the risk of fire and/or explosion, and the cells are not damaged. Freya’s cells will continue to work after abuse.

Thermal shutdown protection: The Freya thermal shutdown technology prevents thermal runaway by shutting down and discharging cells, if the cells reach excessive temperatures. Freya’s unique capability leaves the cells discharged and inert. Competitive separators leave cells frozen in a fully charged state, which is dangerous.

Structural failure protection: The Freya technology is thermally stable. The separator does not shrink or melt at temperatures as high as 180°C. And the Freya technology is chemically stabile. All commercial separators available to date soften or dissolve in their electrolyte at elevated temperatures, which can lead to dangerous shorting.

Penetration protection: Freya cells do not fail catastrophically if penetrated. Freya cells and batteries can survive being hit by a bullet, or pierced by a flying piece of metal in an accident, without danger of catching fire or exploding.

In addition to these protections, Freya’s technology provides an intrinsic overcharge protection feature without the need for battery management electronics. Competitors depend on expensive, and failure prone, battery management electronics to prevent overcharging.

The Freya separator is a complex combination of polymers that offer bonding, very low shrinkage, thermal shutdown, thermal stability and the very unique property of electrical conductivity at elevated voltages. Only Freya cells and batteries offer this complete protection.

Richard Fox, CEO of Freya, commented: “Concerns over safety have limited the use of lithium-ion cells and batteries in larger applications. Traditional lithium-ion cells are prone to venting and fire. Competitors using lower-energy chemicals reduce the risk of venting and fire, but also reduce the energy in the batteries. We are very encouraged about the commercialization of our technology, as evidenced by the multi-million dollars in order commitments we have received, subject to the delivery of satisfactory prototypes.”

As announced on March 9, 2011, the companies have executed a non-binding Letter of Intent through which China Nuvo Solar is set to acquire one hundred percent of the outstanding common stock of Freya. Closing of the transaction is subject to customary conditions including, among other things, the negotiation and execution of definitive agreements as well as the approval of both company's boards of directors and any necessary stockholder or regulatory approval.