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Nanocellulose-Enabled, All-Nanofiber, High-Performance Supercapacitor.

Qi Zhang1, Chaoji Chen2, Wenshuai Chen1

  • 1Key Laboratory of Bio-based Material Science and Technology of Ministry of Education , Northeast Forestry University , Harbin 150040 , China.

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|January 19, 2019
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Summary
This summary is machine-generated.

This study presents a high-performance, all-nanofiber asymmetric supercapacitor (ASC) using sustainable nanocellulose-derived carbon. This renewable energy storage device offers excellent electrochemical performance and environmental benefits.

Keywords:
asymmetric supercapacitorscellulose nanofibersforest nanomaterialsnanocellulose carbonnanocellulose cathode

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Area of Science:

  • Materials Science
  • Electrochemistry
  • Nanotechnology

Background:

  • Nanocellulose is a sustainable nanomaterial for energy storage.
  • Existing supercapacitors face challenges in performance and environmental impact.

Purpose of the Study:

  • To develop a high-performance, all-nanofiber asymmetric supercapacitor (ASC) using nanocellulose-derived materials.
  • To investigate the potential of nanocellulose in creating renewable and eco-friendly energy storage devices.

Main Methods:

  • Fabrication of a hierarchical porous carbon (HPC) anode from nanocellulose.
  • Assembly of an ASC using an HPC anode, nanocellulose membrane separator, and NiCo2O4 cathode supported by HPC.
  • Characterization of the ASC's electrochemical performance.

Main Results:

  • The HPC anode exhibited an ultrahigh surface area (2046 m2 g-1) and a 3D porous structure.
  • The all-nanofiber ASC demonstrated high electrochemical performance (64.83 F g-1 at 0.25 A g-1) surpassing most cellulose-based ASCs.
  • The device maintained good performance even with a thick and highly loaded design.

Conclusions:

  • Nanocellulose-derived materials are highly effective for advanced energy storage.
  • The developed ASC offers a promising direction for high-power, environmentally friendly, and renewable energy storage.
  • The use of nanocellulose components ensures renewability, low cost, and biodegradability.