Protected lithium electrodes having a polymer electrolyte interlayer and battery cells thereof
First Claim
1. An electrochemical cell structure, comprising:
- an anode comprising a material selected from the group consisting of an active metal, active metal-ion, active metal alloy, active metal alloying metal and active metal intercalating material; and
an ionically conductive protective architecture on a first surface of the anode, the architecture comprising,an active metal ion conducting polymeric separator layer comprising a polymer electrolyte, the polymeric separator layer being chemically compatible with the active metal anode, and in contact with the anode, anda substantially impervious ionically conductive layer chemically compatible with the polymeric separator layer, and in contact with the polymeric separator layer.
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Abstract
Active metal and active metal intercalation electrode structures and battery cells having ionically conductive protective architecture including an active metal (e.g., lithium) conductive impervious layer separated from the electrode (anode) by a porous separator impregnated with a non-aqueous electrolyte (anolyte). This protective architecture prevents the active metal from deleterious reaction with the environment on the other (cathode) side of the impervious layer, which may include aqueous or non-aqueous liquid electrolytes (catholytes) and/or a variety electrochemically active materials, including liquid, solid and gaseous oxidizers. Safety additives and designs that facilitate manufacture are also provided.
236 Citations
20 Claims
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1. An electrochemical cell structure, comprising:
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an anode comprising a material selected from the group consisting of an active metal, active metal-ion, active metal alloy, active metal alloying metal and active metal intercalating material; and an ionically conductive protective architecture on a first surface of the anode, the architecture comprising, an active metal ion conducting polymeric separator layer comprising a polymer electrolyte, the polymeric separator layer being chemically compatible with the active metal anode, and in contact with the anode, and a substantially impervious ionically conductive layer chemically compatible with the polymeric separator layer, and in contact with the polymeric separator layer. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 20)
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19. The cell of clam 15, wherein the cathode structure comprises an air electrode.
Specification