Effect of gel electrolytes on the performance of a minimized flexible micro-supercapacitor based on graphene/PEDOT composite using pen lithography
- Authors
- Lee, Hee Uk; Jin, Joon-Hyung; Kim, Seung Wook
- Issue Date
- 25-3월-2019
- Publisher
- ELSEVIER SCIENCE INC
- Keywords
- Graphene flake; PEDOT; Micro-supercapacitor; Gel electrolyte; Pen lithography
- Citation
- JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY, v.71, pp.184 - 190
- Indexed
- SCIE
SCOPUS
KCI
- Journal Title
- JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
- Volume
- 71
- Start Page
- 184
- End Page
- 190
- URI
- https://scholar.korea.ac.kr/handle/2021.sw.korea/66616
- DOI
- 10.1016/j.jiec.2018.11.021
- ISSN
- 1226-086X
- 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 cm(2)) without needing complex processing or a cleanroom environment. Furthermore, performances of three different gel electrolytes (PVA/H2SO4, LiCIO4, 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. (C) 2018 The Korean Society of Industrial and Engineering Chemistry. Published by Elsevier B.V. All rights reserved.
- Files in This Item
- There are no files associated with this item.
- Appears in
Collections - College of Engineering > Department of Chemical and Biological Engineering > 1. Journal Articles
Items in ScholarWorks are protected by copyright, with all rights reserved, unless otherwise indicated.