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A battery is a galvanic cell that is used as a source of electrical power for specific applications. Modern batteries exist in a multitude of forms to accommodate various applications, from tiny button batteries such as those that power wristwatches to the very large batteries used to supply backup energy to municipal power grids. Some batteries are designed for single-use applications and cannot be recharged (primary cells), while others are based on conveniently reversible cell reactions that...
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Probing and Mapping Electrode Surfaces in Solid Oxide Fuel Cells
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Fuel Exhaling Fuel Cell.

Zahid Manzoor Bhat1, Ravikumar Thimmappa1, Mruthyunjayachari Chattanahalli Devendrachari1

  • 1Department of Chemistry and Centre for Energy Science, Indian Institute of Science Education and Research (IISER) Pune , Dr. Homi Bhabha Road, Pashan, Pune 411008, India.

The Journal of Physical Chemistry Letters
|January 3, 2018
PubMed
Summary
This summary is machine-generated.

This study introduces a novel fuel cell that exhales hydrogen fuel from the cathode, unlike traditional proton exchange membrane fuel cells (PEMFCs). This innovation enhances energy efficiency by utilizing neutralization energy in a tandem configuration.

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Area of Science:

  • Electrochemistry
  • Materials Science
  • Energy Conversion

Background:

  • Proton exchange membrane fuel cells (PEMFCs) are crucial for clean energy, but current designs have limitations in fuel management.
  • Optimizing fuel utilization and energy recovery in fuel cell systems is an ongoing challenge.

Purpose of the Study:

  • To present a novel fuel cell concept with cathodic fuel exhalation capability.
  • To investigate the energy benefits of a tandem configuration involving a neutralization electrochemical cell and a PEMFC.

Main Methods:

  • Development of a fuel cell designed for cathodic fuel exhalation.
  • Performance evaluation of the fuel cell, including power density and fuel output.
  • Analysis of a tandem system combining a neutralization electrochemical cell and a PEMFC.

Main Results:

  • The novel fuel cell demonstrated cathodic hydrogen (H2) exhalation.
  • Achieved a peak power density of 70 mW/cm2 and a peak current density of 160 mA/cm2.
  • Observed a cathodic H2 output of approximately 80 mL in 1 hour.
  • Showcased potential for doubled energy benefits in a tandem configuration.

Conclusions:

  • The proposed fuel cell concept offers an unprecedented approach to fuel management.
  • Directing fuel through a neutralization electrochemical cell prior to a PEMFC can significantly enhance energy efficiency.