Please use this identifier to cite or link to this item: https://hdl.handle.net/20.500.11851/8829
Title: Graphitic carbon nitride/zinc oxide composite electrodes for all-solid-state photo-supercapacitor with ion exchange membrane separator
Authors: Altaf C.T.
Colak T.O.
Lufrano F.
Unal G.S.
Sankir N.D.
Sankir M.
Keywords: Graphitic carbon nitride
Lithiated membrane
Photo-supercapacitor
Solar energy
Zinc oxide
Capacitance
Electric discharges
Electrodes
Electrolytes
Energy conversion
II-VI semiconductors
Ion exchange
Ion exchange membranes
Lithium compounds
Nitrides
Solar energy
Zinc oxide
All-solid state
Composites electrodes
Graphitic carbon nitrides
Ion-exchange membrane
Li +
Lithiated membrane
Nafion membrane
Photo-supercapacitor
UV illuminations
Zinc oxide nanowires
Supercapacitor
Issue Date: 2022
Publisher: Elsevier Ltd
Abstract: Photo-supercapacitor (PSC) devices, which have the ability to convert solar energy into electricity and store it at the same time, are groundbreaking in the field of renewable energy. However, performing energy conversion and storage on the same system with an efficient and compact design is a very challenging task. In this work, novel graphitic carbon nitride (g-C3N4)/zinc oxide nanowire (ZnO NW) composites have been synthesized as photoactive electrode material. All-solid-state two-electrode PSC has been assembled by using the lithiated Nafion® membrane as the electrolyte and separator. Compared to the standard filter paper (FP) separator, the Li+-form Nafion® membrane provided 5-times higher energy density under UV-illumination, at 1.5 V working potential and at 26.7 mAg?1 current density. Moreover, g-C3N4/ZnO NW-based PSC having Li+-form Nafion® membrane showed excellent cycling stability over 25,000 charge/discharge cycles with exceptional capacitance retention and Coulombic efficiency of 90.2 % and 99.9 %, respectively. In addition, UV illumination resulted in prolonged discharge time. In other words, energy density increased 21.5-fold with UV-illumination and reached 11 Wh kg?1 at 1.5 V working voltage and 20 mAg?1 current density. © 2022 Elsevier Ltd
URI: https://doi.org/10.1016/j.est.2022.105784
https://hdl.handle.net/20.500.11851/8829
ISSN: 2352-152X
Appears in Collections:Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection
WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collection

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