TY - JOUR
T1 - All-solid-state flexible micro-supercapacitor arrays with patterned graphene/MWNT electrodes
AU - Yun, Junyeong
AU - Kim, Daeil
AU - Lee, Geumbee
AU - Ha, Jeong Sook
N1 - Funding Information:
This work was financially supported by the National Research Foundation of Korea (NRF) grant funded by the Korea Government (MEST) (Grant No. NRF-2013R1A2A1A01016165 ). We also thank the KU-KIST graduate school program of Korea University.
Publisher Copyright:
© 2014 Elsevier Ltd. All rights reserved.
Copyright:
Copyright 2017 Elsevier B.V., All rights reserved.
PY - 2014
Y1 - 2014
N2 - We report on the fabrication of all-solid-state flexible micro-supercapacitor (MSC) arrays with electrodes consisting of patterned multilayer graphene (MG) and functionalized multi-walled carbon nanotubes (MWNTs), and polyvinyl alcohol (PVA)-H3PO4 gel electrolyte. The fabricated MSC exhibited areal capacitance of 2.54 mF/cm2 at a scan rate of 10 mV/s, which is ∼150 times higher than that of MSC with MG electrode. The areal energy and power density were also dramatically improved via using MG/MWNT electrodes. In addition, there was no deterioration of the electrical performance over repetitive convex and concave bending with a bending radius of 2.3 mm. Furthermore, both the output voltage and the total capacitance of the MSC could be controlled via the serial or parallel connection of multiple planar-type MSCs to operate high-voltage light-emitting diodes.
AB - We report on the fabrication of all-solid-state flexible micro-supercapacitor (MSC) arrays with electrodes consisting of patterned multilayer graphene (MG) and functionalized multi-walled carbon nanotubes (MWNTs), and polyvinyl alcohol (PVA)-H3PO4 gel electrolyte. The fabricated MSC exhibited areal capacitance of 2.54 mF/cm2 at a scan rate of 10 mV/s, which is ∼150 times higher than that of MSC with MG electrode. The areal energy and power density were also dramatically improved via using MG/MWNT electrodes. In addition, there was no deterioration of the electrical performance over repetitive convex and concave bending with a bending radius of 2.3 mm. Furthermore, both the output voltage and the total capacitance of the MSC could be controlled via the serial or parallel connection of multiple planar-type MSCs to operate high-voltage light-emitting diodes.
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U2 - 10.1016/j.carbon.2014.07.055
DO - 10.1016/j.carbon.2014.07.055
M3 - Article
AN - SCOPUS:84920610812
VL - 79
SP - 156
EP - 164
JO - Carbon
JF - Carbon
SN - 0008-6223
IS - 1
ER -