Issue 1, 2018

Laboratory filter paper as a substrate material for flexible supercapacitors

Abstract

In this study, a flexible asymmetrical solid-state filter paper-based supercapacitor was fabricated. Common laboratory filter paper (FP) provides toughness and flexibility to the whole device. Simply, traditional electroless Ni plating and electro-deposition were introduced to change the electrical conductivity of FP as a flexible and conductive substrate material. Then, the electrochemical active material Co(OH)2 and active carbon (AC) were respectively coated on the conductive Ni paper through electro-deposition and physical coating methods to prepare Ni/Co(OH)2-FP as a positive electrode and Ni/AC-FP as a negative electrode. Moreover, they were separated by a piece of FP coated with an ionic gel electrolyte to assemble the flexible asymmetrical solid-state supercapacitors. This supercapacitor exhibits superior flexibility, large volume energy density (0.64 mW h cm−3), and good bending cycle performance (95.89% capacitance retention after 500 bending cycles). It has been demonstrated that the assembled supercapacitor can still power a red light-emitting diode (LED) indicator normally regardless of the bending state and bending frequency. This study may provide promising insights for the design and fabrication of a flexible asymmetrical solid-state supercapacitor in a flexible power supply for wearable and portable applications.

Graphical abstract: Laboratory filter paper as a substrate material for flexible supercapacitors

Supplementary files

Article information

Article type
Paper
Submitted
01 ذو الحجة 1438
Accepted
16 محرم 1439
First published
16 محرم 1439

Sustainable Energy Fuels, 2018,2, 147-154

Laboratory filter paper as a substrate material for flexible supercapacitors

L. Zhang, X. Yu, P. Zhu, F. Zhou, G. Li, R. Sun and C. Wong, Sustainable Energy Fuels, 2018, 2, 147 DOI: 10.1039/C7SE00411G

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