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US 11,699,806 B2Granted
Thin nanocoating separators for batteries
AssigneeThe Board of Trustees of the University of Illinois
InventorsReza Shahbazian-Yassar, Tara Foroozan
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Abstract
The disclosure provides a battery and methods for making and using the battery. The battery includes (a) a separator that is woven and porous, and (b) a graphene oxide (GO) nanosheet coating coupled to a surface of the separator. The GO nanosheet coating is configured as a buffer layer to permit transport of Li-ions therethrough and to regulate a rate of flow of the transport of the Li-ions.
Claims24
A battery, comprising:
- a separator that is porous;
- and
- a graphene oxide (GO) nanosheet coating coupled to a surface of the separator, wherein the GO nanosheet coating is configured as a buffer layer to permit transport of Li-ions therethrough and to regulate a rate of flow of the transport of the Li-ions, and
- wherein the GO nanosheet coating is lithiophilic.
1 more element
A battery, comprising:
- a separator that is porous;
- and
- a graphene oxide (GO) nanosheet coating coupled to a surface of the separator, wherein the GO nanosheet coating is configured as a buffer layer to permit transport of Li-ions therethrough and to regulate a rate of flow of the transport of the Li-ions, and
- wherein a plurality of gaps exist between a plurality of GO nanosheets in the GO nanosheet coating and the plurality of GO nanosheets have a plurality of defective sites and have negatively charged functional groups on a surface of the plurality of GO nanosheets that each permit and regulate the transport of Li-ions therethrough.
1 more element
A battery, comprising:
- a separator that is porous;
- and
- a graphene oxide (GO) nanosheet coating coupled to a surface of the separator, wherein the GO nanosheet coating is configured as a buffer layer to permit transport of Li-ions therethrough and to regulate a rate of flow of the transport of the Li-ions, and
- wherein the surface of the separator that is coupled to the GO nanosheet coating is uneven or bumpy and wherein the GO nanosheet coating is three-dimensional and integrated into the porous separator.
1 more element
Dependencies are inferred from the claim text.