East Asian Calligraphy Black Ink-Coated Paper as Flexible Conducting Electrode for Supercapacitor
Journal
ECS Journal of Solid State Science and Technology
Journal Volume
10
Journal Issue
12
Date Issued
2021
Author(s)
Abstract
East Asian calligraphy black ink (hereafter called simply "black ink") is used to fabricate flexible conducting chromatography paper electrode by a simple and low-cost method. The black ink-coated paper was characterized by scanning electron microscopy, surface profiler, water contact angle measurement, electrical resistance measurement, X-ray photoelectron spectroscopy, and X-ray diffraction. The hydrophilicity slightly decreased after black ink coating but still provided good adhesion to the follow-up reduced graphene oxide/polyaniline/chitosan slurry coating for fabricating supercapacitor electrodes. A 1000-cycle repeated bending test with a bending radius of 5 mm revealed good conductance retention. Instrumental analyses indicated that the carbon black in the black ink was the main contributor to the electrical conductance. The supercapacitor with black-ink-coated paper electrodes exhibited an areal specific capacitance of up to 179.08 mF cm-2 and coulomb efficiency of 80%. This confirmed that the black-ink-coated paper electrode could be feasibly applied to a supercapacitor. This black-ink-coated paper can be easily fabricated in resource-limited settings, and it provides new possibilities for the use of paper-based electrodes in flexible electronics. ? 2021 The Author(s). Published on behalf of The Electrochemical Society by IOP Publishing Limited.
Subjects
Carbon black
Coatings
Contact angle
Electrodes
Flexible electronics
Paper
Scanning electron microscopy
Supercapacitor
X ray photoelectron spectroscopy
Black inks
Chromatography paper
Coated paper
Conducting electrodes
Electrical resistance measurement
Low cost methods
Simple++
Surface profilers
Water contact angle measurement
X- ray diffractions
Graphene
Bending
Calligraphy
Coating
Conductivity
Ink
Measurement
Type
journal article