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Related Experiment Video

Updated: Apr 1, 2026

Development and Functionalization of Electrolyte-Gated Graphene Field-Effect Transistor for Biomarker Detection
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Writable electrochemical energy source based on graphene oxide.

Di Wei1

  • 1Nokia Technologies, Broers Building, 21 JJ Thomson Av., Madingley Road, CB3 0FA, Cambridge, United Kingdom.

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|October 15, 2015
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Summary

This study demonstrates a novel graphene oxide (GO) battery, leveraging its unique water transport properties for energy generation. This safe, flexible power source opens new possibilities for wearable electronics and disposable devices.

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Area of Science:

  • Materials Science
  • Energy Storage
  • Nanotechnology

Background:

  • Graphene oxide (GO) is typically a precursor for reduced graphene oxide (rGO).
  • Unique properties of GO, like proton conductivity and water permeability, are often overlooked.
  • Traditional battery technologies have limitations in flexibility and substrate compatibility.

Purpose of the Study:

  • To demonstrate a novel planar energy source based on graphene oxide (GO).
  • To explore the potential of GO's unique properties for energy generation.
  • To develop a flexible and safe energy source for new applications.

Main Methods:

  • Fabrication of a GO-based battery on insulating substrates (polymer, paper) using PEDOT, GO ink, and rGO on silver collectors.
  • Integration of room temperature ionic liquid (RTIL) to enhance performance.
  • Characterization of energy capacity, voltage, power density, and energy density.

Main Results:

  • A GO-based battery-like planar energy source was successfully demonstrated.
  • A 0.5 cm unit cell generated 30 Ah/L capacity with up to 0.7 V voltage.
  • Achieved power density of 0.4 W/cm³ and energy density of 4 Wh/L.
  • The GO battery powered an electrochromic device.

Conclusions:

  • This work pioneers energy generation using water molecules transported within GO.
  • The developed GO battery offers a safe, flexible alternative to traditional batteries.
  • Potential applications include foldable energy sources, wearable electronics, and disposable power on flexible substrates like gloves.