The PolyPlus Protected Lithium Electrode
+ – Protected Lithium Electrode
Protected Lithium Electrode. The Protected Lithium Electrode (PLE) is a free-standing battery anode with a lithium metal core that enables the development of safe batteries with unprecedented energy densities. The PLE was recognized by TIME magazine as one of the 50 Best Inventions of 2011, and by the Edison Committee with a Gold Edison Award in 2012.
What is it?
The PolyPlus PLE is a sheet of metallic lithium protected by a thin, dense, inorganic membrane that selectively conducts Li+ ions. The PLE makes possible what was thought to be impossible: to build batteries that combine lithium metal electrodes with water-based chemistries.
Highest Energy Density
The PolyPlus PLE is the world’s first air-stable lithium metal electrode, and it has enabled the design and fabrication of the most compact and energy dense batteries.
World-record performance of PolyPlus Li-Air cells has been verified by the U.S. Army CERDEC. Testing at their Aberdeen facility confirmed specific energy in excess of 800 Wh/kg for 10 Ah PolyPlus Li-Air cells.
Paradigm Shift for Battery Design
The PolyPlus PLE concept changes the way we think about battery cell design.
The membrane functions as an engineered solid electrolyte interface.
The PLE decouples the negative lithium electrode from chemical environment of the battery, allowing pairing of the PLE with unconventional electrolytes and high-voltage positive electrodes.
The invention of the PLE by PolyPlus enables the development of a new generation of battery chemistries. PolyPlus worked with a Tier 1 battery manufacturing engineering firm to design and build a first of its kind pilot line to produce the protected lithium electrodes used in state-of-the-art lithium-air, lithium-water, and lithium-sulfur batteries. PolyPlus is now refining the PLE to enable the manufacture of ultra-compact/ultra-light batteries that can be scaled to volumes that will satisfy the global marketplace.