Abstract: An interconnected corrugated carbon-based network comprising a plurality of expanded and interconnected carbon layers is disclosed. In one embodiment, each of the expanded and interconnected carbon layers is made up of at least one corrugated carbon sheet that is one atom thick. In another embodiment, each of the expanded and interconnected carbon layers is made up of a plurality of corrugated carbon sheets that are each one atom thick. The interconnected corrugated carbon-based network is characterized by a high surface area with highly tunable electrical conductivity and electrochemical properties.

Abstract: Provided herein are energy storage devices (400, 500, 600A, and 600B) having an anode comprising a layered double hydroxide (702) comprising divalent ions and trivalent ions, both of which contribute to energy storage. In some embodiments, the specific combination of device chemistry, active materials, and electrolytes (430) described herein form storage devices that operate at high voltage and exhibit the capacity of a battery and the power performance of supercapacitors in one device.

Abstract: Provided herein are energy storage devices comprising a first electrode comprising a layered double hydroxide, a conductive scaffold, and a first current collector; a second electrode comprising a hydroxide and a second current collector; a separator; and an electrolyte. In some embodiments, the specific combination of device chemistry, active materials, and electrolytes described herein form storage devices that operate at high voltage and exhibit the capacity of a battery and the power performance of supercapacitors in one device.

Abstract: The present disclosure provides for an exemplary energy storage device and methods of forming thereof, comprising an exemplary conductive graphene ink on exemplary substrates to form durable, flexible, and facile graphene films and energy storage devices for use with and within a variety of electronics and devices.

Abstract: Provided herein are energy storage devices high energy and power densities, cycle life, and safety. In some embodiments, the energy storage device comprise a non-flammable electrolyte that eliminate and/or reduce fire hazards for improved battery safety, with improved electrode compatibility with electrode materials.

Abstract: The present disclosure provides for an exemplary energy storage device and methods of forming thereof, comprising an exemplary conductive graphene ink on exemplary substrates to form durable, flexible, and facile graphene films and energy storage devices for use with and within a variety of electronics and devices.

Abstract: Capacitors having electrodes made of interconnected corrugated carbon-based networks (ICCNs) are disclosed. The ICCN electrodes have properties that include high surface area and high electrical conductivity. Moreover, the electrodes are fabricated into an interdigital planar geometry with dimensions that range down to a sub-micron scale. As such, micro-supercapacitors employing ICCN electrodes are fabricated on flexible substrates for realizing flexible electronics and on-chip applications that can be integrated with micro-electromechanical systems (MEMS) technology and complementary metal oxide semiconductor technology in a single chip. In addition, capacitors fabricated of ICCN electrodes that sandwich an ion porous separator realize relatively thin and flexible supercapacitors that provide compact and lightweight yet high density energy storage for scalable applications.

Abstract: Disclosed herein are methods and compositions directed to a promising class of nanomaterials called organic nanoparticles, or carbon nanodots. The present disclosure provides a facile method for the conversion of biomolecule-based carbon nanodots into high surface area three-dimensional graphene networks with excellent electrochemical properties.

Abstract: Provided herein are devices comprising one or more cells, and methods for fabrication thereof. The devices may be electrochemical devices. The devices may include three-dimensional supercapacitors. The devices may be microdevices such as, for example, microsupercapacitors. In some embodiments, the devices are three-dimensional hybrid microsupercapacitors. The devices may be configured for high voltage applications. In some embodiments, the devices are high voltage microsupercapacitors. In certain embodiments, the devices are high voltage asymmetric microsupercapacitors. In some embodiments, the devices are integrated microsupercapacitors for high voltage applications.

Abstract: Disclosed herein are methods and compositions directed to a promising class of nanomaterials called organic nanoparticles, or carbon nanodots. The present disclosure provides a facile method for the conversion of biomolecule-based carbon nanodots into high surface area three-dimensional graphene networks with excellent electrochemical properties.

Abstract: Provided herein are carbon-based oxide (CBO) materials and reduced carbon-based oxide (rCBO) materials, fabrication processes, and devices with improved performance and a high throughput. In some embodiments, the present disclosure provides materials and methods for synthesizing CBO and rCBO materials. Such methods avoid the shortcomings of current synthesizing methods to facilitate facile, high-throughput production of CBO and rCBO materials.

Abstract: The present disclosure relates to conductive adhesives and inks. The disclosed conductive adhesives include glues and epoxies, based on graphene and graphene/carbon composites and the methods of manufacture thereof, such conductive adhesives exhibiting excellent conductivity, thermal properties, durability, low curing temperatures, mechanical flexibility, and reduced environmental impact. Further, adhesives with conductive additives such as silver nanowires and the methods of production thereof are disclosed herein.

Abstract: Described are electromagnetic shields comprising a substrate, a conductive additive, and a binder incorporated with the conductive additive and deposited on the substrate, and methods of making thereof.

Abstract: Energy storage devices comprising carbon-based electrodes and/or redox electrolytes are disclosed herein. In some embodiments, the carbon-based electrodes comprise laser-scribed activated carbon comprising one or more micro-channels. In some embodiments, the redox electrolytes comprise a ferricyanide/ferrocyanide redox couple. Also described are processes, methods, protocols and the like for manufacturing carbon-based electrodes comprising micro-channels for use in high energy storage devices such as supercapacitors, and for manufacturing high energy storage devices comprising redox electrolytes.

Abstract: Provided herein are devices comprising one or more cells, and methods for fabrication thereof. The devices may be electrochemical devices. The devices may include three-dimensional supercapacitors. The devices may be microdevices such as, for example, microsupercapacitors. In some embodiments, the devices are three-dimensional hybrid microsupercapacitors. The devices may be configured for high voltage applications. In some embodiments, the devices are high voltage microsupercapacitors. In certain embodiments, the devices are high voltage asymmetric microsupercapacitors. In some embodiments, the devices are integrated microsupercapacitors for high voltage applications.

Abstract: Capacitors having electrodes made of interconnected corrugated carbon-based networks (ICCNs) are disclosed. The ICCN electrodes have properties that include high surface area and high electrical conductivity. Moreover, the electrodes are fabricated into an interdigital planar geometry with dimensions that range down to a sub-micron scale. As such, micro-supercapacitors employing ICCN electrodes are fabricated on flexible substrates for realizing flexible electronics and on-chip applications that can be integrated with micro-electromechanical systems (MEMS) technology and complementary metal oxide semiconductor technology in a single chip. In addition, capacitors fabricated of ICCN electrodes that sandwich an ion porous separator realize relatively thin and flexible supercapacitors that provide compact and lightweight yet high density energy storage for scalable applications.

Abstract: The present disclosure provides supercapacitors that may avoid the shortcomings of current energy storage technology. Provided herein are supercapacitor devices, and methods of fabrication thereof comprising the manufacture or synthesis of an active material on a current collector and/or the manufacture of supercapacitor electrodes to form planar and stacked arrays of supercapacitor electrodes and devices. Prototype supercapacitors disclosed herein may exhibit improved performance compared to commercial supercapacitors. Additionally, the present disclosure provides a simple, yet versatile technique for the fabrication of supercapacitors through masking and etching.

Abstract: The present disclosure relates to conductive adhesives and inks. The disclosed conductive adhesives include glues and epoxies, based on graphene and graphene/carbon composites and the methods of manufacture thereof, such conductive adhesives exhibiting excellent conductivity, thermal properties, durability, low curing temperatures, mechanical flexibility, and reduced environmental impact. Further, adhesives with conductive additives such as silver nanowires and the methods of production thereof are disclosed herein.

Abstract: Energy storage devices are disclosed. In some embodiments, the energy storage devices comprise a positive electrode comprising a carbon-based material comprising porous carbon sheet(s). Fabrication processes for manufacturing the energy storage devices are disclosed.

Abstract: Provided herein are energy storage devices having an anode comprising a layered double hydroxide comprising divalent ions and trivalent ions both of which contribute to energy storage. In some embodiments, the specific combination of device chemistry, active materials, and electrolytes described herein form storage devices that operate at high voltage and exhibit the capacity of a battery and the power performance of supercapacitors in one device.