Abstract
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.
| Original language | English |
|---|---|
| Pages (from-to) | 156-164 |
| Number of pages | 9 |
| Journal | Carbon |
| Volume | 79 |
| Issue number | 1 |
| DOIs | |
| Publication status | Published - 2014 Jan 1 |
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ASJC Scopus subject areas
- Chemistry(all)
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All-solid-state flexible micro-supercapacitor arrays with patterned graphene/MWNT electrodes. / Yun, Junyeong; Kim, Daeil; Lee, Geumbee; Ha, Jeong Sook.
In: Carbon, Vol. 79, No. 1, 01.01.2014, p. 156-164.Research output: Contribution to journal › Article
}
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
PY - 2014/1/1
Y1 - 2014/1/1
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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UR - http://www.scopus.com/inward/citedby.url?scp=84920610812&partnerID=8YFLogxK
U2 - 10.1016/j.carbon.2014.07.055
DO - 10.1016/j.carbon.2014.07.055
M3 - Article
VL - 79
SP - 156
EP - 164
JO - Carbon
JF - Carbon
SN - 0008-6223
IS - 1
ER -