Patent ID: 11923139
Assignee: ENI S.P.A.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  Y | IPC H

Claim 0:
1. A device comprising:
current collector elements, wherein each current collector element comprises metallic components having at least one surface covered with a composite material;
wherein the composite material comprises a carbonaceous matrix and a polymeric binder able to sustain temperatures up to 200° C. without detrimental degradation;
wherein the carbonaceous matrix is based on graphene and is doped with transition metal dichalcoqenides that comprise one or more transition metal compounds; and
wherein the carbonaceous matrix is a 3D-multilayer structure that is formed by introducing precursors of the dichalcoqenides into graphene oxide to be dispersed in water or into a graphene oxide dispersion in water and then subjecting the dispersion to a hydrothermal treatment;
wherein the device is filled with a non-aqueous electrolyte composition so that the carbonaceous matrix is in contact with the non-aqueous electrolyte composition that comprises cations and anions in a liquid medium selected from high boiling temperature solvents and ionic liquids; and
wherein the solvents do not undergo a change to a gaseous state at normal atmospheric pressure and at a temperature of at least 150° C.