Graphene Electrode Based Ceramic Capacitor

A ceramic capacitor comprising at least a dielectric ceramic layer and at least an electrode layer deposited on said dielectric ceramic layer, wherein said electrode layer consists of a graphene electrode layer or an exfoliated graphite electrode layer being in direct contact with or bonded to said dielectric ceramic layer and wherein said graphene electrode layer has a thickness no less than 2 nm and consists of multiple discrete sheets of a graphene material stacked together or a graphene composite material containing from 0.1% to 99% by weight of multiple discrete sheets of a graphene material dispersed in a matrix material or bonded by a binder material to form said graphene electrode layer;

• wherein said graphene material is selected from (a) single-layer or multi-layer pristine graphene sheets having less than 0.01% by weight of non-carbon elements or (b) single-layer or multi-layer non-pristine graphene sheets having at least 0.01% by weight of non-carbon elements;
• wherein said multi-layer pristine or non-pristine graphene sheets have a thickness less than 100 nm and said non-pristine graphene is selected from graphene oxide, reduced graphene oxide, graphene fluoride, graphene chloride, graphene bromide, graphene iodide, hydrogenated graphene, nitrogenated graphene, doped graphene, chemically functionalized graphene, or a combination thereof;
• and
• wherein said binder material or matrix material is selected from a metal, carbon, polymer, pitch, glass, metal oxide, ceramic, organic material, or a combination thereof.