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ã€Chinese Instrument Network Instrument Development】 Recently, Wu Zhongshuai, a researcher of the 2D Materials and Energy Device Research Group of the Dalian Institute of Chemical Physics, Chinese Academy of Sciences, used UV-reduced graphene oxide technology to realize the reduction of graphene oxide and graphene pattern in one step. Micro-electrodes were constructed and various configurations of micro-supercapacitors were prepared in batches.
The relevant research results were published on the ACS Nano (DOI:10.1021/acsnano.7b01390).
The rapid development of flexible, miniaturized, and intelligent electronic products has promoted the progress of energy storage devices such as micro-supercapacitors. Traditional micro-nano processing technologies, such as wet lithography, are cumbersome to operate, complicated to process, and costly, and are not suitable for mass production. In addition, a micro-supercapacitor prepared with graphene oxide as a precursor also requires steps such as chemical reduction or thermal reduction. Therefore, the high-efficiency, low-cost, large-scale production of graphene micro-capacitor devices still faces many challenges.
The research team used UV-reduced graphene oxide technology to realize the efficient reduction of graphene oxide and the patterning of graphene micro-electrodes in one step, and mass-produced different configurations of micro-supercapacitors. Different from existing preparation technologies, such as wet lithography and spray printing, this technology has the advantages of simple operation flow, low cost, mild conditions, etc., and can efficiently build different configurations and integrated miniature power sources. The prepared capacitors exhibited high scan rate (200 V/s), energy density (7.7 mWh/cm3), and power density (312 W/cm3) in the ionic liquid. This work provides a new idea to simplify the preparation of graphene micro-supercapacitors in one step, and confirms that the electrochemical performance of the device can be significantly improved by regulating the infiltration performance of the interface between the membrane electrode and the electrolyte.
The above work was funded by the National Natural Science Foundation of China, the National Key R&D Program, the National Youth Talents Program, and the Natural Science Foundation of Liaoning Province.
(Original title: Dalian Institute of Photochemical Reduction of Graphene Microcapsule Supercapacitor Research Progress)
The relevant research results were published on the ACS Nano (DOI:10.1021/acsnano.7b01390).
The rapid development of flexible, miniaturized, and intelligent electronic products has promoted the progress of energy storage devices such as micro-supercapacitors. Traditional micro-nano processing technologies, such as wet lithography, are cumbersome to operate, complicated to process, and costly, and are not suitable for mass production. In addition, a micro-supercapacitor prepared with graphene oxide as a precursor also requires steps such as chemical reduction or thermal reduction. Therefore, the high-efficiency, low-cost, large-scale production of graphene micro-capacitor devices still faces many challenges.
The research team used UV-reduced graphene oxide technology to realize the efficient reduction of graphene oxide and the patterning of graphene micro-electrodes in one step, and mass-produced different configurations of micro-supercapacitors. Different from existing preparation technologies, such as wet lithography and spray printing, this technology has the advantages of simple operation flow, low cost, mild conditions, etc., and can efficiently build different configurations and integrated miniature power sources. The prepared capacitors exhibited high scan rate (200 V/s), energy density (7.7 mWh/cm3), and power density (312 W/cm3) in the ionic liquid. This work provides a new idea to simplify the preparation of graphene micro-supercapacitors in one step, and confirms that the electrochemical performance of the device can be significantly improved by regulating the infiltration performance of the interface between the membrane electrode and the electrolyte.
The above work was funded by the National Natural Science Foundation of China, the National Key R&D Program, the National Youth Talents Program, and the Natural Science Foundation of Liaoning Province.
(Original title: Dalian Institute of Photochemical Reduction of Graphene Microcapsule Supercapacitor Research Progress)