High energy density aqueous lithium/air-battery cells
First Claim
Patent Images
1. A battery cell, comprising:
- a protected anode, comprising,a lithium 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, prior to initial discharge, comprising;
a cathode for reducing molecular oxygen;
an aqueous catholyte comprising a dissolved portion of an active substance material; and
an un-dissolved solid phase portion of the active substance material, in contact with the aqueous catholyte;
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.
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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.
186 Citations
49 Claims
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1. A battery cell, comprising:
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a protected anode, comprising, a lithium 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, prior to initial discharge, comprising; a cathode for reducing molecular oxygen; an aqueous catholyte comprising a dissolved portion of an active substance material; and an un-dissolved solid phase portion of the active substance material, in contact with the aqueous catholyte; 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. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48)
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49. A method of making a battery cell comprising:
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providing, 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, prior to initial discharge, a cathode for reducing molecular oxygen, an aqueous catholyte, the catholyte comprising a dissolved portion of an active substance material, and an un-dissolved solid phase portion of the active substance material in contact with the aqueous catholyte; 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.
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Specification