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US 10,873,117 B2Granted
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.
Claims21
A method of preparing a multi-layer structure on a substrate comprising:
- forming a pair of bilayers on a surface of the substrate in a layer-by-layer assembly by contacting the substrate with a solution with sequential adsorption of materials in each layer,
- the first bilayer including a first material and a second material, the first and second material having complementary functional groups;
- the second bilayer including a third material and a fourth material, the third and fourth material having complementary functional groups;
- and
- the pair of bilayers includes an ion-conductive polymer layer, a polyanion or polycation, and a graphene oxide barrier layer substantially free of graphene.
2 more elements
Dependencies are inferred from the claim text.