Abstract
The objective of this study was to fabricate a minimized all solid-state micro-supercapacitor (MSC) with a patterned graphene flake (GF)/polyethylenedioxythiophene (PEDOT) composite electrode using pen lithography. This MSC demonstrated properties of a suitable gel electrolyte. It involved direct writing of GF/PEDOT composite inks with a layer-by-layer assembly and polymerization method by pen lithography on a very small area (0.38 cm2) without needing complex processing or a cleanroom environment. Furthermore, performances of three different gel electrolytes (PVA/H2SO4, LiClO4, and H3PO4) in the MSC were investigated to obtain an MSC with high power density. Results revealed that GF/PEDOT-MSC with PVA/H2SO4 gel electrolyte demonstrated excellent electrochemical features such as maximum operating potential window (1.2 V), specific capacitance of 37.08 mF cm−2, and energy density of 6.4 mWh cm−2 with extended cycling stability up to capacitance retention rate of 89% after 2500 cycles. This study suggests potential applications of these electrode materials for an easy and scalable fabrication of a wide variety of devices.
| Original language | English |
|---|---|
| Journal | Journal of Industrial and Engineering Chemistry |
| DOIs | |
| Publication status | Accepted/In press - 2018 Jan 1 |
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Keywords
- Gel electrolyte
- Graphene flake
- Micro-supercapacitor
- PEDOT
- Pen lithography
ASJC Scopus subject areas
- Chemical Engineering(all)
Cite this
Effect of gel electrolytes on the performance of a minimized flexible micro-supercapacitor based on graphene/PEDOT composite using pen lithography. / Lee, Hee Uk; Jin, Joon Hyung; Kim, Seung Wook.
In: Journal of Industrial and Engineering Chemistry, 01.01.2018.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Effect of gel electrolytes on the performance of a minimized flexible micro-supercapacitor based on graphene/PEDOT composite using pen lithography
AU - Lee, Hee Uk
AU - Jin, Joon Hyung
AU - Kim, Seung Wook
PY - 2018/1/1
Y1 - 2018/1/1
N2 - The objective of this study was to fabricate a minimized all solid-state micro-supercapacitor (MSC) with a patterned graphene flake (GF)/polyethylenedioxythiophene (PEDOT) composite electrode using pen lithography. This MSC demonstrated properties of a suitable gel electrolyte. It involved direct writing of GF/PEDOT composite inks with a layer-by-layer assembly and polymerization method by pen lithography on a very small area (0.38 cm2) without needing complex processing or a cleanroom environment. Furthermore, performances of three different gel electrolytes (PVA/H2SO4, LiClO4, and H3PO4) in the MSC were investigated to obtain an MSC with high power density. Results revealed that GF/PEDOT-MSC with PVA/H2SO4 gel electrolyte demonstrated excellent electrochemical features such as maximum operating potential window (1.2 V), specific capacitance of 37.08 mF cm−2, and energy density of 6.4 mWh cm−2 with extended cycling stability up to capacitance retention rate of 89% after 2500 cycles. This study suggests potential applications of these electrode materials for an easy and scalable fabrication of a wide variety of devices.
AB - The objective of this study was to fabricate a minimized all solid-state micro-supercapacitor (MSC) with a patterned graphene flake (GF)/polyethylenedioxythiophene (PEDOT) composite electrode using pen lithography. This MSC demonstrated properties of a suitable gel electrolyte. It involved direct writing of GF/PEDOT composite inks with a layer-by-layer assembly and polymerization method by pen lithography on a very small area (0.38 cm2) without needing complex processing or a cleanroom environment. Furthermore, performances of three different gel electrolytes (PVA/H2SO4, LiClO4, and H3PO4) in the MSC were investigated to obtain an MSC with high power density. Results revealed that GF/PEDOT-MSC with PVA/H2SO4 gel electrolyte demonstrated excellent electrochemical features such as maximum operating potential window (1.2 V), specific capacitance of 37.08 mF cm−2, and energy density of 6.4 mWh cm−2 with extended cycling stability up to capacitance retention rate of 89% after 2500 cycles. This study suggests potential applications of these electrode materials for an easy and scalable fabrication of a wide variety of devices.
KW - Gel electrolyte
KW - Graphene flake
KW - Micro-supercapacitor
KW - PEDOT
KW - Pen lithography
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UR - http://www.scopus.com/inward/citedby.url?scp=85057841593&partnerID=8YFLogxK
U2 - 10.1016/j.jiec.2018.11.021
DO - 10.1016/j.jiec.2018.11.021
M3 - Article
AN - SCOPUS:85057841593
JO - Journal of Industrial and Engineering Chemistry
JF - Journal of Industrial and Engineering Chemistry
SN - 1226-086X
ER -