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US 8,785,055 B2Granted
Ionic liquid batteries
AssigneeThe United States of America as represented by the Secretary of the Navy
InventorThomas E. Sutto
Life of this patent
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Abstract
Novel electric battery systems are disclosed utilizing selected ionic liquids as electrolytes and selected metals and metal oxides as electrodes. The ionic liquids utilize a substituted imidazolium cation, which does not have the corrosive safety and environmental concerns associated with corrosive acid and alkali electrolytes.
Claims6
A lithium-free battery consisting essentially of:
- (a) an anode consisting essentially of one of zinc (Zn), manganese (Mn), aluminum (Al), and lead (Pb);
- (b) a cathode consisting essentially of a metal oxide selected from the group consisting of MnO2, PbO2, NiO, and Ag2O;
- and
- (c) an ionic liquid electrolyte consisting essentially of an imidazolium cation as:
- wherein each R independently is H or a halogen;
- R1 and R2 independently are one of hydrogen (H), a halogen, and CH3;
- and R3 is an aliphatic moiety of formula CnAm with n≧1 and m≧n,
- wherein each A independently is one of H and a halogen of Group 17 (IUPAC designation) elements, and
- wherein lithium (Li) is excluded among all of said anode, said cathode and said electrolyte.
6 more elements
Dependencies are inferred from the claim text.