Multi-layer structures prepared by layer-by-layer assembly
AssigneeMassachusetts Institute of Technology
InventorsPaula T. Hammond, Sun Hwa Lee
Life of this patent
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Abstract
A protective layer can be deposited on a surface of an porous polymer separator placing on a Li-metal electrode to protect against adverse electrochemical activity in a battery. The protective layer can be a multilayered structure including graphene oxide.
Claims17
A multi-layer structure comprising a tetralayer on a substrate, the tetralayer including an ion-conductive polymer and a barrier layer, the tetralayer on the substrate positioned between a surface of a separator and a surface of a Li-metal electrode in a battery, wherein the tetralayer includes a first polyethylene oxide layer, a graphene oxide layer adjacent to the first polyethylene oxide layer, a second polyethylene oxide layer adjacent to the graphene oxide layer and opposite the first polyethylene oxide layer, and a polyacrylic acid layer adjacent to the second polyethylene oxide layer.
A battery device comprising an electrode protective structure, wherein the electrode protective structure includes graphene oxide in a tetralayer on a substrate positioned between a surface of a separator and a surface of a Li-metal electrode, wherein the tetralayer includes a first polyethylene oxide layer, a graphene oxide layer adjacent to the first polyethylene oxide layer, a second polyethylene oxide layer adjacent to the graphene oxide layer and opposite the first polyethylene oxide layer, and a polyacrylic acid layer adjacent to the second Polyethylene oxide layer.
Dependencies are inferred from the claim text.