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Graphene and Nano-scale Material Assemblies

Technology Benefits

Low cost Transparent High conductivity High electrochemical activity

Technology Application

Thin-film materials with novel electronic, optoelectronic, and electrochemical properties Energy storage devices Optoelectronic devices Solar cells LEDs Electrodes

Detailed Technology Description

Researchers at UCLA have invented a low-cost, conductive, composite material based on an interconnected nano-scale network of graphene that can be fabricated in solution at room temperature.

Supplementary Information

Inventor: GRUNER, George | DUAN, Xiangfeng
Priority Number: WO2012112818A2
IPC Current: C01B003102 | B01D000900 | B01J000224 | C01B003312 | C01G005304
Assignee Applicant: The Regents of the University of California
Title: INTERPENETRATING NETWORKS OF CRYSTALLINE CARBON AND NANO-SCALE ELECTROACTIVE MATERIALS | RÉSEAUX INTERPÉNÉTRANTS DE CARBONE CRISTALLIN ET DE MATÉRIAUX ÉLECTROACTIFS À L'ÉCHELLE NANOMÉTRIQUE
Usefulness: INTERPENETRATING NETWORKS OF CRYSTALLINE CARBON AND NANO-SCALE ELECTROACTIVE MATERIALS | RÉSEAUX INTERPÉNÉTRANTS DE CARBONE CRISTALLIN ET DE MATÉRIAUX ÉLECTROACTIFS À L'ÉCHELLE NANOMÉTRIQUE
Summary: Interpenetrating network assembly is used for sensor assemblies (claimed) and energy storage applications. Can also be used for LEDS, composites, electronic devices, photodetectors, batteries, ultracapacitors, and solar cells.
Novelty: Interpenetrating network assembly for, e.g. sensor assemblies, comprises network of connected flakes of nanocrystalline carbon, and nanoparticles of electrochemical material in contact with carbon flakes

Industry

Environmental/Green Technology

Sub Group

Solar Cell

Others

Background

Electronic materials play a central role in applications such as energy storage, and electronic and opto-electronic devices. Batteries and supercapacitors require electrodes with large electrochemical activity and large electrical conductivity. Opto-electronic devices require light sensitive materials in combination with electrically conducting materials. Solar cells and light emitting diodes (LEDs) require optically transparent and highly conducting electrodes.

Electrodes that incorporate oxide materials and various forms of carbon, such as carbon nanotubes and activated carbon, are used for energy storage, where the oxide material provides capacitance and the carbon materials provide electrical conductance. Similarly, carbon nanotubes have been combined with materials that respond to light. A significant disadvantage of this approach is that the electrodes, when composed of single-wall nanotubes are prohibitively expensive, while multiwall nanotubes do not have the required performance. Graphene films fabricated using room-temperature deposition processes have much lower fabrication costs but lack in required performance, such as electrical conductivity or electrochemical capacity. There is a need for a nano-scale electrically conducting material that, in combination of other nano-scale materials, acts as an electrode for an energy-storage and optoelectronics device.

Additional Technologies by these Inventors

Tech ID/UC Case

23180/2011-099-0

Related Cases

2011-099-0

Country/Region

USA

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