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Rechargeable magnesium ion battery with nanoporous-carbon electrode for reversible magnesium ion intercalation

United States Patent Application

View the Complete Application at the US Patent & Trademark Office
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Nanoporous-carbon grown via pulsed laser deposition can be used as an electrically conductive anode host material for Mg.sup.2+ intercalation in rechargeable magnesium batteries. Nanoporous carbon has high surface area, and an open, accessible pore structure tunable via mass density that can improve diffusion. A preferred nanoporous carbon mass density of about 0.5 g/cm.sup.3 does not mechanically degrade with successive insertion/de-insertion cycles and provides an average interplanar spacing between graphene sheet fragments of greater than about 4.8 .ANG., large enough for reversible intercalation of partially-solvated Mg.sup.2+.
Siegal, Michael P. (Albuquerque, NM), Yelton, William G. (Sandia Park, NM)
15/ 457,598
March 13, 2017
STATEMENT OF GOVERNMENT INTEREST [0002] This invention was made with Government support under contract no. DE-AC04-94AL85000 awarded by the U. S. Department of Energy to Sandia Corporation. The Government has certain rights in the invention.