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pp 1–5 | Cite as

A “Press and Go” Thin Biofuel Cell Patch for Power Generation

  • Biao Leng
  • Kavya Vanamamulai
  • Qin Zhong
  • Iqbal Sherif
  • Nuggehalli M. Ravindra
  • Zafar IqbalEmail author
Properties of Interfaced Materials and Films

Abstract

Biofuel cells are devices that generate portable electrical power, typically from glucose, alcohols or related biofuels, by using enzymatic anodes and cathodes. We report on the performance of membrane- and mediator-free enzymatic glucose biofuel cells (BFCs) fabricated in a sandwiched, patch geometry with carbon nanotube nanopaper bio-electrodes prepared using a compression technique to immobilize the enzymes. A gel electrolyte comprised of agar mixed with glucose is sandwiched between the two bio-electrodes to form a patch. Power densities up to 111.90 μW/cm2 at a current density of 334.50 μA/cm2 at a voltage of 0.335 V were obtained for a typical single cell BFC of this design. The sandwich BFC also showed good stability with a half-life of about 1.5 days under continuous operation. The relatively high power density for this new design is attributed to the compression-induced immobilization of the enzymes by the nanotubes as indicated by scanning electron microscope images. This compression-induced immobilization of enzymes provides improved direct electron transfer at the carbon nanotube electrodes.

Notes

Acknowledgements

Biao Leng thanks the Interdisciplinary Program in Materials Science and Engineering at the New Jersey Institute of Technology for the financial support.

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Copyright information

© The Minerals, Metals & Materials Society 2019

Authors and Affiliations

  1. 1.Interdisciplinary Program in Materials Science and EngineeringNew Jersey Institute of TechnologyNewarkUSA
  2. 2.Department of Chemistry and Environmental ScienceNew Jersey Institute of TechnologyNewarkUSA
  3. 3.Johnson and JohnsonSkillmanUSA
  4. 4.Department of PhysicsNew Jersey Institute of TechnologyNewarkUSA

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