Recently, Wu Zhongshu, a researcher at the Dalian Institute of Chemical Physics, Chinese Academy of Sciences led the team of 2D materials and energy devices to use UV-light reduction of graphene oxide technology to achieve the reduction of graphene oxide and the graphene patterned microelectrode in a one-step process. Different configurations of micro-supercapacitors. Relevant research results published in the American Chemical Society nano-journals. The team used UV-light reduction of graphene oxide technology to achieve the efficient reduction of graphene oxide and the patterning of graphene microelectrodes in one step, and batch preparation of miniature supercapacitors with different configurations. Different from the existing preparation technologies, such as wet lithography and spray printing, the technology has the advantages of simple operation flow, low cost, mild conditions and the like, and can efficiently construct micro-power sources of different configurations and integrated types. The prepared capacitor showed higher scan rate (200V / s), energy density (7.7mWh / cm3) and power density (312W / cm3) in ionic liquids. This work provided a new idea for simplifying the preparation of graphene micro-capacitors and demonstrated that the electrochemical performance of the device can be significantly improved by controlling the wettability of the interface between the thin film electrode and the electrolyte.
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