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ALKALI-METAL BATTERIES WITH A DENDRITE-FREE ANODE INTERFACING AN ORGANIC LIQUID ELECTROLYTE

United States Patent Application

20170301922
A1
View the Complete Application at the US Patent & Trademark Office
A rechargeable battery cell has an organic-liquid electrolyte contacting a dendrite free alkali-metal anode. The alkali-metal anode may be a liquid at the operating temperature that is immobilized by absorption into a porous membrane. The alkali-metal anode may be a solid that wets a porous-membrane separator, where the contact between the solid alkali-metal anode and the liquid electrolyte is at micropores or nanopores in the porous-membrane separator. The use of a dendrite-free solid lithium cell was demonstrated in a symmetric cell with a porous cellulose-based separator membrane. A K.sup.+-ion rechargeable cell was demonstrated with a liquid K--Na alloy anode immobilized in a porous carbon membrane using an organic-liquid electrolyte with a Celgard.RTM. or glass-fiber separator.
Goodenough, John B. (Austin, TX), Xue, Leigang (Austin, TX), You, Byoungchul (Austin, TX)
15/ 452,337
March 7, 2017
GOVERNMENT LICENSE STATEMENT [0002] This invention was made with government support under Grant no. DE-SC0005397 and Grant no. DE-AR0000297 awarded by the Department of Energy. The government has certain rights in the invention.