Abstract: A nanogap device includes a first insulation layer having a nanopore formed therein, a first nanogap electrode which may be formed on the first insulation layer and may be divided into two parts with a nanogap interposed between the two parts, the nanogap facing the nanopore, a second insulation layer formed on the first nanogap electrode, a first graphene layer formed on the second insulation layer, a first semiconductor layer formed on the first graphene layer, a first drain electrode formed on the first semiconductor layer, and a first source electrode formed on the first graphene layer such as to be apart from the first semiconductor layer.

Abstract: Disclosed herein is a reduced graphene oxide doped with a dopant, and a thin layer, a transparent electrode, a display device and a solar cell including the reduced graphene oxide. The reduced graphene oxide doped with a dopant includes an organic dopant and/or an inorganic dopant.

Abstract: Provided is a method for preparing a carbon material based on an organic nanofilm using thermal evaporation, including: depositing a liquid polymer or polymer solution containing a polymer and a solvent onto a substrate, thereby forming an organic nanofilm; stabilizing the organic nanofilm so that the carbon atoms in the organic nanofilm have a cyclic arrangement; and carbonizing the stabilized organic nanofilm, thereby forming a carbon material, wherein the organic nanofilm is formed from the liquid polymer or polymer solution through a thermal evaporation process. The method provides a carbon material with a thickness, sheet resistance and surface roughness suitable for various applications and allows control thereof. In addition, the method uses a relatively inexpensive starting material, pitch, thereby reducing the overall production cost, and avoids a need for a complicated additional patterning operation, so that the carbon material is applied directly to electronic devices.

Abstract: Disclosed herein is a absorbed glass matt (AGM) valve regulated lead-acid (VRLA) battery, comprising: a positive plate comprising a positive active material; a negative plate comprising a negative active material; wherein the negative active material comprises a composition comprising a carbon additive; an AGM separator; and an electrolyte; wherein the positive plate, the negative plate, the separator, and the electrolyte are disposed in a container comprising a valve; and wherein the electrolyte is present in an amount that ranges from 100 to 150% by volume based on the total pore volume of the separator.

Abstract: Methods for producing macroscopic quantities of oxidized graphene nanoribbons are disclosed herein. The methods include providing a plurality of carbon nanotubes and reacting the plurality of carbon nanotubes with at least one oxidant to form oxidized graphene nanoribbons. The at least one oxidant is operable to longitudinally open the carbon nanotubes. In some embodiments, the reacting step takes place in the presence of at least one acid. In some embodiments, the reacting step takes place in the presence of at least one protective agent. Various embodiments of the present disclosure also include methods for producing reduced graphene nanoribbons by reacting oxidized graphene nanoribbons with at least one reducing agent. Oxidized graphene nanoribbons, reduced graphene nanoribbons and compositions and articles derived therefrom are also disclosed herein.

Abstract: A substrate is provided that has a metallic layer on a substrate surface of a substrate. A film made of a two dimensional (2-D) material, such as graphene, is deposited on a metallic surface of the metallic layer. The metallic layer is dewet and/or removed to provide the film on the substrate surface.

Abstract: A light emitting device includes a nano-structure, a first semiconductor layer on the nano-structure, an active layer on the first semiconductor layer, and a second conductive semiconductor layer on the active layer. The nano-structure includes a graphene layer provided under the first semiconductor layer to make contact with the first semiconductor layer; and a plurality of nano-textures extending from a top surface of the graphene layer to the first semiconductor layer and in contact with the first semiconductor layer.

Abstract: The invention provides a graphene device structure and a method for manufacturing the same, the device structure comprising a graphene layer; a gate region in contact with the graphene layer; semiconductor doped regions formed in the two opposite sides of the gate region and in contact with the graphene layer, wherein the semiconductor doped regions are isolated from the gate region; a contact formed on the gate region and contacts formed on the semiconductor doped regions. The on-off ratio of the graphene device is increased through the semiconductor doped regions without increasing the band gap of the graphene material, i.e., without affecting the mobility of the material or the speed of the device, thereby increasing the applicability of the graphene material in CMOS devices.

Abstract: A thermal interface material (1) comprises a bulk polymer (2) within which is embedded sub-micron (c. 200 to 220 nm) composite material wires (3) having Ag and carbon nanotubes (“CNTs”) 4. The CNTs are embedded in the axial direction and have diameters in the range of 9.5 to 10 nm and have a length of about 0.7 ?m. In general the pore diameter can be in the range of 40 to 1200 nm. The material (1) has particularly good thermal conductivity because the wires (3) give excellent directionality to the nanotubes (4)—providing very low resistance heat transfer paths. The TIM is best suited for use between semiconductor devices (e.g. power semiconductor chip) and any type of thermal management systems for efficient removal of heat from the device.

Abstract: Photovoltaic cells comprising an active layer comprising, as p-type material, conjugated polymers such as polythiophene and regioregular polythiophene, and as n-type material at least one fullerene derivative. The fullerene derivative can be C60, C70, or C84. The fullerene also can be functionalized with indene groups. Improved efficiency can be achieved.

Abstract: A spacer-modified nano graphene platelet electrode, comprising: (a) multiple nano graphene platelets or sheets having an average thickness smaller than 10 nm; and (b) discrete, non-metallic nano-scaled particles that are disposed between two graphene platelets or sheets to serve as a spacer. In such a spacer-modified graphene electrode, large amounts of electrolyte-accessible pores are formed, enabling the formation of large amounts of electric double layer charges in a supercapacitor, which exhibits an exceptionally high specific capacitance.

Abstract: According to example embodiments, a tunneling field-effect transistor (TFET) includes a first electrode on a substrate, a semiconductor layer on a portion of the first electrode, a graphene channel on the semiconductor layer, a second electrode on the graphene channel, a gate insulating layer on the graphene channel, and a gate electrode on the gate insulating layer. The first electrode may include a portion that is adjacent to the first area of the substrate. The semiconductor layer may be between the graphene channel and the portion of the first electrode. The graphene channel may extend beyond an edge of at least one of the semiconductor layer and the portion of the first electrode to over the first area of the substrate.

Abstract: Technologies are generally described for a system and process effective to coat a substance with graphene. A system may include a first container including graphene oxide and water and a second container including a reducing agent and the substance. A third container may be operative relationship with the first container and the second container. A processor may be in communication with the first, second and third containers. The processor may be configured to control the third container to receive the graphene oxide and water from the first container and to control the third container to receive the reducing agent and the substance from the second container. The processor may be configured to control the third container to mix the graphene oxide, water, reducing agent, and substance under sufficient reaction conditions to produce sufficient graphene to coat the substance with graphene to produce a graphene coated substance.

Abstract: In one embodiment, a memory device includes a first electrode layer on a substrate; a data storing layer on the first electrode layer; and a second electrode layer on the data storing layer. At least one of the first and second electrode layers may be formed of a material having a conduction band offset that varies with an applied voltage. One of the first and second electrode layers may be connected to a bit line and the other may be connected to a word line. The first electrode layer may include one of graphene and metastable oxide. The second electrode layer may include one of graphene and metastable oxide.

Abstract: Embodiments of the present invention comprise different methods and equipment for efficiently and relatively inexpensively producing Casimir cavities for use in quantum vacuum energy extraction. The methods include without limitation, sintering; submicron porous filter materials; web roll-to-roll produced mesh or foil layers; nanotube arrays; web roll-to-roll produced porous membranes such as graphene, metallically doped; web roll-to-roll produced metallic crystals with self assembling arrays of nano-channels; three-dimensional prototyping; charged particle deposition; metal wire bundles; metal tube bundles; and metallically doped or metallically coated glass or polymer wire bundles.

Abstract: A graphene lattice comprising an ordered array of graphene nanoribbons is provided in which each graphene nanoribbon in the ordered array has a width that is less than 10 nm. The graphene lattice including the ordered array of graphene nanoribbons is formed by utilizing a layer of porous anodized alumina as a template which includes dense alumina portions and adjacent amorphous alumina portions. The amorphous alumina portions are removed and the remaining dense alumina portions which have an ordered lattice arrangement are employed as an etch mask. After removing the amorphous alumina portions, each dense alumina portion has a width which is also less than 10 nm.

Abstract: A transparent conductive electrode stack containing a work function adjusted carbon-containing material is provided. Specifically, the transparent conductive electrode stack includes a layer of a carbon-containing material and a layer of a work function modifying material. The presence of the work function modifying material in the transparent conductive electrode stack shifts the work function of the layer of carbon-containing material to a higher value for better hole injection into the OLED device as compared to a transparent conductive electrode that includes only a layer of carbon-containing material and no work function modifying material.

Abstract: Graphene is used as a replacement for indium tin oxide as a transparent conductive electrode which can be used in an organic light emitting diode (OLED) device. Using graphene reduces the cost of manufacturing OLED devices and also makes the OLED device extremely flexible. The graphene is chemically doped so that the work function of the graphene is shifted to a higher value for better hole injection into the OLED device as compared to an OLED device containing an undoped layer of graphene. An interfacial layer comprising a conductive polymer and/or metal oxide can also be used to further reduce the remaining injection barrier.

Abstract: Described herein is a device comprising a plurality of first reaction electrodes arranged in an array, the plurality of first reaction electrodes configured to be exposed to a solution and having a capacitance; first circuitry configured to controllably connect the plurality of first reaction electrodes to a bias source and controllably disconnect the plurality of first reaction electrodes from the bias source; and second circuitry configured to measure a rate of charging or discharging of the capacitance. Also described herein is a method of using this device to sequence DNA.

Abstract: According to one embodiment, a semiconductor device includes a catalyst underlying layer formed on a substrate including semiconductor elements formed thereon and processed in a wiring pattern, a catalyst metal layer that is formed on the catalyst underlying layer and whose width is narrower than that of the catalyst underlying layer, and a graphene layer growing with a sidewall of the catalyst metal layer set as a growth origin and formed to surround the catalyst metal layer.

Abstract: Non-planar semiconductor devices having group III-V material active regions with multi-dielectric gate stacks are described. For example, a semiconductor device includes a hetero-structure disposed above a substrate. The hetero-structure includes a three-dimensional group III-V material body with a channel region. A source and drain material region is disposed above the three-dimensional group III-V material body. A trench is disposed in the source and drain material region separating a source region from a drain region, and exposing at least a portion of the channel region. A gate stack is disposed in the trench and on the exposed portion of the channel region. The gate stack includes first and second dielectric layers and a gate electrode.

Abstract: Graphene is used as a replacement for indium tin oxide as a transparent conductive electrode which can be used in an organic light emitting diode (OLED) device. Using graphene reduces the cost of manufacturing OLED devices and also makes the OLED device extremely flexible. The graphene is chemically doped so that the work function of the graphene is shifted to a higher value for better hole injection into the OLED device as compared to an OLED device containing an undoped layer of graphene. An interfacial layer comprising a conductive polymer and/or metal oxide can also be used to further reduce the remaining injection barrier.

Abstract: Inks for the formation of transparent conductive films are described that comprise an aqueous or alcohol based solvent, carbon nanotubes as well as suitable dopants. Suitable dopants generally comprise halogenated ionic dopants. In some embodiment, the inks comprise sulfonated dispersants that can effectively provide additional doping to improve electrical conductivity as well as stabilize the inks with respect to settling and/or improve the fluid properties of the inks for certain processing approaches. The inks can be processed into films with desirable levels of electrical conductivity and optical transparency.

Abstract: Described herein is a device comprising: a plurality of first reaction electrodes arranged in an array, the plurality of first reaction electrodes configured to be exposed to a fluid and having a capacitance; first circuitry configured to controllably set the plurality of first reaction electrode to a predetermined voltage and allow the capacitance of the plurality of first reaction electrode to charge or discharge through the fluid; and second circuitry configured to measure a rate of charging or discharging of the capacitance of the plurality of first reaction electrodes. Also described herein is a method of using this device to sequence DNA.

Abstract: An article of manufacture and method of preparation thereof. The article of manufacture and method of making the article includes an eutectic salt solution suspensions and a plurality of nanocrystalline phase change material particles having a coating disposed thereon and the particles capable of undergoing the phase change which provides increase in thermal energy storage.

Abstract: A method for production of various morphologies of solid carbon product by reducing carbon oxides with a reducing agent in the presence of a catalyst. The carbon oxides are typically either carbon monoxide or carbon dioxide. The reducing agent is typically either a hydrocarbon gas or hydrogen. The desired morphology of the solid carbon product may be controlled by the specific catalysts, reaction conditions, and optional additives used in the reduction reaction. The resulting solid carbon products have many commercial applications.

Abstract: Devices comprising functionalized materials, and embodiments of a method for making and using such devices, are disclosed. Exemplary devices include ophthalmic devices, nanoparticles, quartz crystal microbalances, microarrays, and nanocomposites. In particular embodiments, device surfaces are modified with monomers and/or polymers, typically carbohydrate monomers and/or polymers. Embodiments of a method for making and using such devices are disclosed. Monomers and/or polymers are covalently bonded to surfaces using functionalized perhalophenylazides. In some embodiments, device surfaces are functionalized with a perhalophenylazide. One or more monomers and/or polymers subsequently are covalently bonded to the device surface using the perhalophenylazide. In other embodiments, monomers and/or polymers are derivatized with a functionalized perhalophenylazide. The derivatized monomers and/or polymers then are covalently bonded to the device surface using the perhalophenylazide.

Abstract: A method of manufacturing graphene includes forming a germanium layer on a surface of a substrate, and forming the graphene directly on the germanium layer by supplying carbon-containing gas into a chamber in which the substrate is disposed.

Abstract: A method for detecting particles is presented. The method comprises generating a reaction to a plurality of particles using a converter material, wherein the converter material is operable to interact with the plurality of particles, and wherein a subset of the plurality of particles comprises neutrons. Further, the method comprises converting a response to the reaction to a readable electrical signal using a sensor, wherein the sensor comprises an array of pixels. Also, the method comprises processing the readable electrical signal from the sensor to generate information for each pixel on the array of pixels and transmitting the information to a processing unit. Also, the method comprises executing a discrimination procedure using the information for distinguishing between instances of impingement of neutrons and non-neutron particles on the array of pixels. Further, the method comprises determining the radionuclide or non-radionuclide source of origin of the neutron and non-neutron particles.

Abstract: According to one embodiment, a semiconductor device includes a semiconductor substrate including semiconductor elements formed thereon, a graphene wiring structure stuck on the substrate with a connection insulating film disposed therebetween and including graphene wires, and through vias each formed through the graphene wiring structure and connection insulating film to connect part of the semiconductor elements to the graphene wires.

Abstract: Disclosed is an electrode material comprising a phthalocyanine compound encapsulated by a protective material, preferably in a core-shell structure with a phthalocyanine compound core and a protective material shell. Also disclosed is a rechargeable lithium cell comprising: (a) an anode; (b) a cathode comprising an encapsulated or protected phthalocyanine compound as a cathode active material; and (c) a porous separator disposed between the anode and the cathode and/or an electrolyte in ionic contact with the anode and the cathode. This secondary cell exhibits a long cycle life, the best cathode specific capacity, and best cell-level specific energy of all rechargeable lithium-ion cells ever reported.

Abstract: A rechargeable lithium cell comprising: (a) an anode comprising an anode active material; (b) a cathode comprising a hybrid cathode active material composed of an electrically conductive substrate and a phthalocyanine compound chemically bonded to or immobilized by the conductive substrate, wherein the phthalocyanine compound is in an amount of from 1% to 99% by weight based on the total weight of the conductive substrate and the phthalocyanine compound combined; and (c) electrolyte or a combination of electrolyte and a porous separator, wherein the separator is disposed between the anode and the cathode and the electrolyte is in ionic contact with the anode and the cathode. This secondary cell exhibits a long cycle life, the best cathode specific capacity, and best cell-level specific energy of all rechargeable lithium-ion cells ever reported.

Abstract: A dielectric material suitable for use between electrodes of a capacitor includes dipole-impregnated fullerenes able to increase a dielectric constant of the dielectric material in order to enhance the energy storage capacity of the capacitor is provided. The dielectric material includes buckminsterfullerenes each having a dipole molecule impregnated within the buckminsterfullerene, the dipole molecules within the buckminsterfullerenes able to rotate and align with forces of an electric field when in the presence of the electric field so that, when in use between the electrodes of the capacitor, they counteract the electric field between the electrodes and increase the energy storage capacity of the capacitor.

Abstract: Methods of forming a pattern on a substrate are provided. The methods include providing a substrate and radiating a laser beam through a transmitting phase mask on the substrate. The transmitting phase mask includes a pattern and radiating the laser beam through the transmitting phase mask forms the pattern on a first surface of the substrate.

Abstract: An imaging member includes a surface layer comprising a fluoroelastomer-fluorosilicone composite. Methods of manufacturing the imaging member and processes for variable lithographic printing using the imaging member are also disclosed.

Abstract: The method of manufacturing a graphene device includes forming an insulating material layer on a substrate, forming first and second metal pads on the insulating material layer spaced apart from each other, forming a graphene layer having a portion defined as an active area between the first and second metal pads on the insulating material layer, forming third and fourth metal pads on the graphene layer spaced apart from each other with the active area therebetween, the third and fourth metal pads extending above the first metal pad and the second metal pad, respectively, forming a first protection layer to cover all the first and second metal pads, the graphene layer, and the third and fourth metal pads, and etching an entire surface of the first protection layer until only a residual layer made of a material for forming the first protection layer remains on the active area.

Abstract: Ultra-high-performance cementitious materials are made using suitably functionalized and relatively low-cost carbon nanofibers and graphite platelets. Polyelectrolytes and surfactants are physisorbed upon these graphite nanomaterials in water, and dispersion of nanomaterials in water is achieved by stirring. Stable and well-dispersed suspensions of nanomaterials in water are realized without using energy-intensive and costly methods, and also without the use of materials which could hinder the hydration and strength development of ultra-high-performance cementitious materials. The water incorporating dispersed nanomaterials is then mixed with the cementitious matrix and, optionally, microfibers, and cured following standard concrete mixing and curing practices. The resulting cementitious materials incorporating graphite nanomaterials and optionally microfibers offer a desired balance of strength, toughness, abrasion resistance, moisture barrier attributes, durability and fire resistance.

Abstract: A graphite-based device comprising a substrate with a plurality of zones and one or more graphene stacks overlaying the zones is provided. A first zone comprises a plurality of surfaces. A first surface is adjacent to a second surface in the plurality of surfaces. The one or more graphene stacks comprise a first graphene stack in the first zone. The first graphene stack comprises a plurality of graphene layers, a first of which is formed on the first surface. The first graphene layer is either planar or non-planar. A second graphene layer in the plurality of graphene layers comprises a first portion formed on a top surface of the first graphene layer, a second portion formed on the second surface and a first intermediate portion connecting the first and second portions. The second graphene layer is non-planar. The first and second graphene layers have different characteristic dimensions and different bandgaps.

Abstract: A high-strength, lightweight inflatable structure is formed of at least one flexible fabric member that, in an inflated condition, forms a self-supporting structure. The flexible fabric member is formed from a bare fabric having an areal weight of less than 4.5 oz/yd2. The fabric is coated with air-impervious resin coating comprising a polyurethane resin having a mixture of graphene nanoplatelets and a phosphorus-based flame retardant added thereto. The thermally exfoliated graphene nanoplatelets contain residual graphene oxide. Graphene oxide, which is a polar molecule, has an affinity for the polar molecules that make up the phosphorus based flame retardant. Accordingly, in addition to its inherent flame-retardant properties, the phosphorus based flame retardant acts as a dispersant to improve the uniform dispersion of the graphene nanoplatelets within the matrix, thus reducing or eliminating the need to use additional dispersants.

Abstract: There is provided a method for fabricating a three dimensional graphene structure using a catalyst template, in which the three dimensional graphene structure in various forms can be obtained through a simple process by using a metal catalyst in various forms as a template and growing graphene thereon. There is also provided a method for controlling length of a three dimensional graphene structure to be from a few nanometers to a few millimeters by controlling length of the metal catalyst template.

Abstract: The present invention provides for a one or more layer graphene optical modulator. In a first exemplary embodiment the optical modulator includes an optical waveguide, a nanoscale oxide spacer adjacent to a working region of the waveguide, and a monolayer graphene sheet adjacent to the spacer. In a second exemplary embodiment, the optical modulator includes at least one pair of active media, where the pair includes an oxide spacer, a first monolayer graphene sheet adjacent to a first side of the spacer, and a second monolayer graphene sheet adjacent to a second side of the spacer, and at least one optical waveguide adjacent to the pair.

Abstract: Aspects of the invention are directed to a method of forming graphene structures. Initially, a cluster of particles is received. The cluster of particles comprises a plurality of particles with each particle in the plurality of particles contacting one or more other particles in the plurality of particles. Subsequently, one or more layers are deposited on the cluster of particles with the one or more layers comprising graphene. The plurality of particles are then etched away without substantially etching the deposited one or more layers. Lastly, the remaining one or more layers are dried. The resultant graphene structures are particularly resistant to the negative effects of aggregation and compaction.

Abstract: Nanomaterials of the JT phase of the titanium oxide TiO2-x, where 0?x?1 having as a building block a crystalline structure with an orthorhombic symmetry and described by at least one of the space groups 59 Pmmn, 63 Amma, 71 Immm or 63 Bmmb. The nanomaterials are in the form of nanofibers, nanowires, nanorods, nanoscrolls and/or nanotubes and are obtained from a hydrogen titanate and/or a mixed sodium and hydrogen titanate precursor compound that is isostructural to the JT crystalline structure. The titanates are the hydrogenated, the protonated, the hydrated and/or the alkalinized phases of the JT crystalline phase that are obtained from titanium compounds such as titanium oxide with an anatase crystalline structure, amorphous titanium oxide, and titanium oxide with a rutile crystalline structure, and/or directly from the rutile mineral and/or from ilmenite.

Abstract: Embodiments relate to a method for representing data in a graphene-based memory device. The method includes applying a first voltage to a back gate of a graphene-based memory device and a second voltage to a first graphene layer of the graphene-based memory device. The graphene-based memory device includes the first graphene layer and a second graphene layer and a first insulation layer located between the first and second graphene layers. The first insulation layer has an opening between the first and second graphene layers. The back gate is located on an opposite side of the second graphene layer from the first insulation layer. The first graphene layer is configured to bend into the opening of the first insulation layer to contact the second graphene layer based on a first electrostatic force generated by the applying the first voltage to the back gate.

Abstract: A graphene lattice comprising an ordered array of graphene nanoribbons is provided in which each graphene nanoribbon in the ordered array has a width that is less than 10 nm. The graphene lattice including the ordered array of graphene nanoribbons is formed by utilizing a layer of porous anodized alumina as a template which includes dense alumina portions and adjacent amorphous alumina portions. The amorphous alumina portions are removed and the remaining dense alumina portions which have an ordered lattice arrangement are employed as an etch mask. After removing the amorphous alumina portions, each dense alumina portion has a width which is also less than 10 nm.

Abstract: Semiconductor structures including parallel graphene nanoribbons or carbon nanotubes oriented along crystallographic directions are provided from a template of silicon carbide (SiC) fins or nanowires. The SiC fins or nanowires are first provided and then graphene nanoribbons or carbon nanotubes are formed on the exposed surfaces of the fin or the nanowires by annealing. In embodiments in which closed carbon nanotubes are formed, the nanowires are suspended prior to annealing. The location, orientation and chirality of the graphene nanoribbons and the carbon nanotubes that are provided are determined by the corresponding silicon carbide fins and nanowires from which they are formed.

Abstract: Semiconductor structures including parallel graphene nanoribbons or carbon nanotubes oriented along crystallographic directions are provided from a template of silicon carbide (SiC) fins or nanowires. The SiC fins or nanowires are first provided and then graphene nanoribbons or carbon nanotubes are formed on the exposed surfaces of the fin or the nanowires by annealing. In embodiments in which closed carbon nanotubes are formed, the nanowires are suspended prior to annealing. The location, orientation and chirality of the graphene nanoribbons and the carbon nanotubes that are provided are determined by the corresponding silicon carbide fins and nanowires from which they are formed.

Abstract: Disclosed herein are a flux and a soldering paste based on the flux. The flux is free from a change in viscosity with age, “skinned surface,” and “rough and crumbling,” and is excellent in printability and solderability. The flux contains, as elements, a resin, a thixo agent, an activator, a solvent and glucopyranosylamine type nanotube. The soldering paste further contains a solder powder. Preferably, the solder powder is free from lead.

Abstract: A cathode electrode of a lithium ion battery includes a cathode current collector and a cathode material layer. The cathode material layer is located on a surface of the cathode current collector. The cathode material layer includes a cathode active material. The cathode active material includes sulfur grafted poly(pyridinopyridine). The sulfur grafted poly(pyridinopyridine) includes a poly(pyridinopyridine) matrix and sulfur dispersed in the poly(pyridinopyridine) matrix. The cathode current collector includes a polymer substrate and a graphene layer located on a surface of the polymer substrate adjacent to the cathode material layer. A lithium ion battery using the cathode electrode is also disclosed.

Abstract: A method for fabricating a magnetic graphene-based nanocomposite comprises a mixing step: placing a graphene oxide layer, an iron-containing precursor and a microwave-receiving material in a container; and a microwaving step: applying microwave radiation to the graphene oxide layer, the iron-containing precursor and the microwave-receiving material to reduce the graphene oxide layer into the reduced graphene oxide (RGO) layer and decompose the iron-containing precursor into a plurality of iron nanoparticles adhering to at least one surface of the RGO layer, whereby is formed a magnetic graphene-based nanocomposite. Via applying microwave radiation within one minute, a magnetic graphene-based nanocomposite can be fabricated, whereby is greatly decreased the time to fabricate a composite containing graphene oxide and magnetite. Therefore, the method has advantages of high efficiency and simple processes.