Samsung Electronics Co., Ltd.

Massachusetts Institute of Technology

Mariya Khiterer

Paula T Hammond

Sun Hwa Lee

Young-Gyoon Ryu

Yang Shao-Horn

Sang Bok Ma

Chibueze Vincent Amanchukwu

A lithium ion conducting protective film produced using a layer-by-layer assembly process. The lithium ion conducting protective film is assembled on a substrate by a sequential exposure of the substrate to a first poly(ethylene oxide) (PEO) layer including a cross-linking silane component on the first side of the substrate, a graphene oxide (GO) layer on the first PEO layer, a second poly(ethylene oxide) (PEO) layer including a cross-linking silane component on the GO layer and a poly(acrylic acid) (PAA) layer on the second PEO layer. The film functions as a lithium ion conducting protective film that isolates the lithium anode from the positive electrochemistry of the cathode in a lithium-air battery, thereby preventing undesirable lithium dendrite growth.

Lithium ion conducting protective film and method of use

A lithium ion conducting protective film is produced using a layer-by-layer assembly process. The lithium ion conducting protective film is assembled on a substrate by a sequential exposure of the substrate to a first poly(ethylene oxide) (PEO) layer including a cross-linking silane component on the first side of the substrate, a graphene oxide (GO) layer on the first PEO layer, a second poly(ethylene oxide) (PEO) layer including a cross-linking silane component on the GO layer and a poly(acrylic acid) (PAA) layer on the second PEO layer. The film functions as a lithium ion conducting protective film that isolates the lithium anode from the positive electrochemistry of the cathode in a lithium-air battery, thereby preventing undesirable lithium dendrite growth.

Provided are electrochemical cells that include a compound having the general formula wherein Ris moiety associated with a lithium ion, Xand Xare unsubstituted methylene moieties, Xand Xare each independently selected from a substituted or unsubstituted methylene moiety, X is a substituted or unsubstituted C-Calkylene moiety, arylene moiety or heteroarylene moiety, Ris selected from Li, H, an alkyl moiety, or a heteroalkyl moiety, 0&#x3c;m&#x2264;1, 0&#x2264;n&#x2264;1, and m+n=1.

Stable electrolyte for lithium air battery and lithium air battery including the same

A lithium ion conducting protective film is produced using a layer-by-layer assembly process. The lithium ion conducting protective film is assembled on a substrate by a sequential exposure of the substrate to a first poly(ethylene oxide) (PEO) layer including a cross-linking silane component on the first side of the substrate, a graphene oxide (GO) layer on the first PEO layer, a second poly(ethylene oxide) (PEO) layer including a cross-linking silane component on the GO layer and a poly(acrylic acid) (PAA) layer on the second PEO layer, The film functions as a lithium ion conducting protective film that isolates the lithium anode from the positive electrochemistry of the cathode in a lithium-air battery, thereby preventing undesirable lithium dendrite growth.

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Cambridge, MA, United States of America

Mariya Khiterer