Three-dimensional Carbon Structure with Pseudo-capacitive Shell for Thin Film Micro-supercapacitor
발표자
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초록
내용
Generally, pseudo-capacitive materials are coated on a carbon electrode to obtain high energy density, but there is a problem due to an increase in resistance due to the pseudo-capacitive material. To solve this problem, we present a 3D carbon structure coated with a thin pseudo-capacitive shell. Specifically, the 3D carbon structure is manufactured using multi-beam interference lithography, and a thin film of MnO2 or polyaniline is obtained by electrodeposition. The 3D carbon core maintains a conductive structure throughout the electrode, and the pseudo-capacitive shells coated with several tens of nanometers exhibit low resistance in the redox reaction. These electrodes are applied to quasi-solid state micro-supercapacitors(MSCs), and the polyaniline coated 3D carbon electrode MSC obtains the highest area energy density of 3.67 μWh/cm2.