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

Hirotaka Koga, Hidetsugu Tonomura, Masaya Nogi, Katsuaki Suganuma, Yuta Nishina

Research output: Contribution to journalArticle

35 Citations (Scopus)

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 g-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.

Original languageEnglish
Pages (from-to)1117-1124
Number of pages8
JournalGreen Chemistry
Volume18
Issue number4
DOIs
Publication statusPublished - 2016

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Graphite
Energy storage
Graphene
Oxides
electrode
oxide
Fabrication
Electrodes
timescale
Papermaking
energy storage
Composite materials
Carbon Nanotubes
Poisons
graphite
Activated carbon
research and development
Pulp
activated carbon
Scalability

ASJC Scopus subject areas

  • Environmental Chemistry
  • Pollution

Cite this

Fast, scalable, and eco-friendly fabrication of an energy storage paper electrode. / Koga, Hirotaka; Tonomura, Hidetsugu; Nogi, Masaya; Suganuma, Katsuaki; Nishina, Yuta.

In: Green Chemistry, Vol. 18, No. 4, 2016, p. 1117-1124.

Research output: Contribution to journalArticle

Koga, Hirotaka ; Tonomura, Hidetsugu ; Nogi, Masaya ; Suganuma, Katsuaki ; Nishina, Yuta. / Fast, scalable, and eco-friendly fabrication of an energy storage paper electrode. In: Green Chemistry. 2016 ; Vol. 18, No. 4. pp. 1117-1124.
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