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Issue 4, 2016
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Fast, scalable, and eco-friendly fabrication of an energy storage paper electrode

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Abstract

Recent progress in portable and wearable electronics has promoted a growing demand for high-performance and flexible energy-storage devices that are abundant and affordable. Because reduced graphene oxide (rGO), originating from inexpensive graphite, serves as a higher-performance energy-storage electrode than conventional activated carbons and carbon nanotubes, research and development of rGO/polymer composite electrodes for flexible supercapacitors have become a center of attraction. However, the fabrication of rGO-based flexible electrodes frequently requires a long time with high-temperature treatment or toxic chemical treatment, resulting in the lack of scalability and eco-friendliness. Here we show a fast, scalable, and environment-compatible route to fabricate a high-performance rGO/cellulose paper supercapacitor electrode. Single-layer graphene oxide (GO) sheets and recycled waste pulp fibers were successfully fabricated into a paper composite by a well-established scalable papermaking process, followed by a room-temperature, additive-free, and millisecond-timescale flash reduction process. The as-prepared rGO/paper electrode had a high specific capacitance, up to 212 F gāˆ’1, for an all paper-based flexible supercapacitor, comparable to those of state-of-the-art rGO-based electrodes, while dramatically decreasing the reduction time of GO from the conventional hour timescale to milliseconds. This work will pave the way for green, flexible, and mass-producible energy-storage paper in future wearable electronics.

Graphical abstract: Fast, scalable, and eco-friendly fabrication of an energy storage paper electrode

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Supplementary files

Article information


Submitted
19 Aug 2015
Accepted
21 Sep 2015
First published
24 Sep 2015

Green Chem., 2016,18, 1117-1124
Article type
Paper
Author version available

Fast, scalable, and eco-friendly fabrication of an energy storage paper electrode

H. Koga, H. Tonomura, M. Nogi, K. Suganuma and Y. Nishina, Green Chem., 2016, 18, 1117
DOI: 10.1039/C5GC01949D

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