Paper-Based Solid-State Micro-supercapacitors Fabricated by Hydrophobic Wax Barrier Printing
- Authors
- Kim, Na Yeon; Oh, In Hyeok; Chang, Suk Tai
- Issue Date
- Feb-2024
- Publisher
- Springer
- Keywords
- Flexible devices; Metal electrodes; Micro-supercapacitors; Paper; Wax printing
- Citation
- Korean Journal of Chemical Engineering, v.41, no.3, pp 763 - 772
- Pages
- 10
- Journal Title
- Korean Journal of Chemical Engineering
- Volume
- 41
- Number
- 3
- Start Page
- 763
- End Page
- 772
- URI
- https://scholarworks.bwise.kr/cau/handle/2019.sw.cau/72975
- DOI
- 10.1007/s11814-024-00101-9
- ISSN
- 0256-1115
1975-7220
- Abstract
- Flexible and small-scale energy storage technologies are critical for future applications such as wearable electronics. In this context, paper has emerged as a lightweight, low-cost, and ecologically friendly flexible substrate for energy storage devices. This paper presents a simple method for fabricating a micro-supercapacitor (MSC) using a wax printing approach that can achieve high resolution without requiring complex processes. In addition, the developed MnO2–Au-paper (MAP) microelectrodes with high porosity exhibit enhanced charge and ion transfer while maintaining a stable flexibility. The solid-state micro-supercapacitor delivers a very large areal capacitance of 624.32 mF cm−2 at 0.2 mA cm−2 and is stable under external stress. The highest energy and power densities obtained for the present MSCs (55.5 μWh cm−2 and 1.59 mW cm−2, respectively), are much larger than those previously reported for pseudocapacitive MSCs, including flexible ones. © The Author(s), under exclusive licence to Korean Institute of Chemical Engineers, Seoul, Korea 2024.
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