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A Simple and Scalable Fabrication Method for Organic Electronic Devices on Textiles
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Stretchable biofuel cell with enzyme-modified conductive textiles.

Yudai Ogawa1, Yuki Takai1, Yuto Kato1

  • 1Department of Bioengineering and Robotics, Tohoku University, 6-6-1 Aramaki Aoba, Aoba-ku, Sendai 980-8579, Japan.

Biosensors & Bioelectronics
|August 11, 2015
PubMed
Summary
This summary is machine-generated.

Researchers developed a stretchable biofuel cell using textiles and enzymes for fructose oxidation and oxygen reduction. This wearable power source demonstrates stable performance under mechanical stress, enabling flexible energy generation.

Keywords:
Biofuel cellCarbon nanotubeStretchable

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Area of Science:

  • Biomedical Engineering
  • Materials Science
  • Electrochemistry

Background:

  • Wearable electronic devices require flexible and sustainable power sources.
  • Biofuel cells offer a promising alternative to conventional batteries by utilizing biological catalysts.
  • Developing mechanically robust and efficient biofuel cells remains a significant challenge.

Purpose of the Study:

  • To develop a sheet-type, stretchable biofuel cell capable of generating power from fructose.
  • To investigate the stability and performance of the biofuel cell under various mechanical deformations.
  • To explore the potential of enzyme-modified textiles for wearable energy harvesting.

Main Methods:

  • Fabrication of a laminated biofuel cell comprising a bioanode textile, a fructose-containing hydrogel, and a biocathode textile.
  • Modification of carbon nanotube (CNT)-decorated stretchable textiles with fructose dehydrogenase (FDH) and bilirubin oxidase (BOD).
  • Evaluation of electrochemical performance and stability under 50% stretching cycles and other mechanical stresses (twisting, wrapping).

Main Results:

  • The biofuel cell achieved a power density of approximately 0.2 mW/cm(2) with a 1.2 kΩ load.
  • Enzymatic reaction currents remained stable for 30 stretching cycles, with an initial 20-30% loss attributed to CNT network disruption.
  • The device maintained stable power output even when stretched, twisted, and wrapped, demonstrating significant mechanical robustness.

Conclusions:

  • A novel sheet-type, stretchable biofuel cell was successfully developed using enzyme-modified textiles.
  • The developed biofuel cell exhibits promising stability and power output under mechanical deformation, suitable for wearable applications.
  • This work highlights the potential of advanced textile engineering and biocatalysis for creating next-generation flexible energy devices.