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All-solid-state flexible micro supercapacitors based on cobalt hydroxide and reduced graphene oxide electrodes
Year of publication 2016
Title of paper All-solid-state flexible micro supercapacitors based on cobalt hydroxide and reduced graphene oxide electrodes
Authors Lee, S.C., Patil, U.M., Kim, S.J., Ahn, S., Kang, S.-W., and Jun, S.C.
Volume 6(50)
Pages 43844 - 43854
Journal RSC Advances
Link 관련링크 http://dx.doi.org/10.1039/C6RA06034J 15회 연결
In-plane micro supercapacitors (micro-SC) have attracted interest due to their high areal and volumetric capacitance that is dependent upon their electrode structure. This study proposes simply-fabricated micro-SCs based on cobalt hydroxide and electrochemically-reduced graphene oxide (erGO). The Au electron collector was prepared via photolithography, and Co(OH)2 and erGO were deposited on the Au surface via electrodeposition. Using facile two-step fabrication method and cost-effective materials, the prepared micro-SCs exhibit good electrochemical performance in PVA–KOH–KI solid electrolyte. The in-plane interdigitated electrode maximizes the areal capacitance by increasing the facing area between the anode and cathode. The micro-SC presents good power density (100.38 mW/cm^2) and a wide potential window due to the electric double-layer properties of erGO and pseudocapacitive performance of Co(OH)2. These fabricated micro-SCs are flexible and can be used in various wearable and small-scale energy storage devices.