Cited 11 time in webofscience Cited 12 time in scopus

Extremely flexible and mechanically durable planar supercapacitors: High energy density and low-cost power source for E-skin electronics

Title
Extremely flexible and mechanically durable planar supercapacitors: High energy density and low-cost power source for E-skin electronics
Authors
Yun, YounghunNandanapalli, Koteeswara ReddyChoi, Ji-HyukSon, WonkyeongChoi, ChangsoonLee, Sungwon
DGIST Authors
Lee, Sungwon
Issue Date
2020-12
Citation
Nano Energy, 78, 105356
Type
Article
Article Type
Article
Author Keywords
GraphenePorous structuresSupercapacitorsFlexible devicesE-skin devicesPower-sources
Keywords
Biocompatible substratesComplicated surfaceHealthcare technologyHigh energy densitiesHigh specific capacitancesMicro supercapacitorsMultifunctional devicesOperating flexibilityFlexible electronicsBiocompatibilityCapacitanceCostsEnergy storageMechanical stabilitySubstratesSupercapacitorWearable technology
ISSN
2211-2855
Abstract
The development of multifunctional devices on highly flexible and biocompatible substrates has received great attention in the field of wearable and healthcare technologies. To realize such a unique technology typically on a single platform, it is very crucial to adopt highly-flexible and embeddable energy storage devices with adequate efficiencies as power sources. In this direction, we introduce a versatile and scalable approach to fabricate planar and symmetric micro-supercapacitors, which can be mounted on any complicated surface. The micro-supercapacitors developed on highly flexible and ultrathin substrates by the angular spray of graphene-ink showed excellent performance with a maximum areal capacitance of ~8.38 mF/cm2 and operating flexibility for a bending radius of 1.8 mm. The devices also displayed outstanding mechanical stability for 10,000 bending cycles with a high specific capacitance (~22 F/g) and power density (~1.13 kW/kg) typically at a scan rate of 100 mV/s. Further, the demonstrations on skin-mountable and wrappable characteristics of mSCs emphasized their adaptability as embeddable power sources for various epidermal and wearable devices. © 2020 Published by Elsevier Ltd.
URI
http://hdl.handle.net/20.500.11750/12642
DOI
10.1016/j.nanoen.2020.105356
Publisher
Elsevier Ltd
Related Researcher
  • Author Lee, Sungwon Bio-Harmonized Device Lab
  • Research Interests Ultrathin Device Fabrication; Bio sensors Development; Functional Material Development
Files:
There are no files associated with this item.
Collection:
Department of Emerging Materials ScienceBio-Harmonized Device Lab1. Journal Articles


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