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US 8,389,147 B2Granted
Hydrogels for aqueous lithium/air battery cells
AssigneePolyPlus Battery Company
InventorsSteven J. Visco, Lutgard C. De Jonghe, Yevgeniy S. Nimon, Alexei Petrov, Kirill Pridatko
Life of this patent
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Abstract
Li/air battery cells are configurable to achieve very high energy density. The cells include a protected a lithium metal or alloy anode and an aqueous catholyte in a cathode compartment. In addition to the aqueous catholyte, components of the cathode compartment include an air cathode (e.g., oxygen electrode) and a variety of other possible elements.
Claims17
A battery cell, comprising:
- a protected anode, comprising,
- a lithium metal anode having a first surface and a second surface,
- a protective membrane architecture on at least the first surface of the anode,
- a cathode compartment comprising a cathode for reducing molecular oxygen, an aqueous catholyte, and a hydrogel reservoir structure;
- and,
- wherein the protective membrane architecture comprises one or more materials configured to provide a first membrane surface chemically compatible with the alkali metal anode in contact with the anode, and a second membrane surface substantially impervious to and chemically compatible with the components of the cathode compartment.
3 more elements
Dependencies are inferred from the claim text.