|The Avestor battery.|
Avestor, the Canadian developer of Lithium-Metal-Polymer (LMP) battery technology, is shutting down. The company filed with the Office of the Superintendent of Bankruptcy in Montréal with a view to making a Proposal to its creditors on 31 October.
In August, the company had produced and shipped its 20,000th battery. At that time, Avestor said it had signed multimillion dollar, multiyear contracts with major telecommunications service providers in North America and also was a provider to several other telecommunications customers in North America.
Considerable sums were invested in developing a battery that could be marketed profitably to the telecommunications industry; nevertheless, the enterprise was not able to reach the break-even point. Despite more than a year of active searching, Avestor failed to attract new industrial and financial partners to replace its current investors. Consequently, it is no longer able to continue operations.—Company statement
AVESTOR was a privately-owned equal partnership of Hydro-Québec and Kerr-McGee and was exclusively dedicated to the development, manufacturing and commercialization of energy-storage solutions based on its exclusive Lithium-Metal-Polymer technology.
|LMP Technology Electrochemical System. Click to enlarge.|
The Lithium-Metal-Polymer cell is a laminate of four thin materials:
A metallic lithium foil anode. The ultra-thin lithium foil acts as both a lithium source and a current collector.
A solid polymeric electrolyte. This lithium ion carrier is obtained by dissolving a lithium salt in a solvating co-polymer.
A metallic oxide cathode based on a reversible intercalation compound of vanadium oxide, blended with lithium salt and polymer to form a plastic composite.
An aluminum foil current collector.
The solid, dry, lithium-ion conducting polymer membrane special polymer serves both as the electrolyte and as the separator between the anode and cathode foils. The membrane is a solid, rubber type polymer matrix with an ionic lithium salt complexed into the matrix. The elastic behaviour of the polymer assures a perfect interface to the surfaces of the two. The result is a totally solid state electro-chemical cell, having neither liquid nor gel components.
(A hat-tip to Gerald!)