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This paper compares the performance of two types of gas diffusion layers (GDLs) as an anode in proton exchange membrane fuel cells (PEMFCs) and investigates their impact on fuel cell efficiency.

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What they did

System
MFC

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Abstract

Abstract The gas diffusion layer (GDL) plays an important role in the operation of fuel cells with a proton exchange membrane (PEMFC). GDL is commonly used on three possible types of carbon fiber-con backing: carbon fabric, non-woven material, carbon paper. All three types have different properties, such as gas permeability, mechanical strength, electrical resistance, hydrophilicity and price. Paper is much cheaper than non-woven material, and replacing even one electrode could make a fuel cell cheaper. But replacement makes sense only if the same efficiency is maintained. In this work, two types of GDL as an anode in PEMFC were compared. As a result of the comparison, current-voltage and power characteristics were obtained.

Key findings

  • Replacing the GDL with a cheaper option, such as carbon paper, does not compromise fuel cell efficiency.
  • The current-voltage and power characteristics of the fuel cell are comparable for both types of GDLs.
  • The study suggests that using carbon paper as a GDL can be a cost-effective alternative without sacrificing performance.

Keywords

Proton exchange membrane fuel cellAnodeGaseous diffusionComposite materialElectrodeCarbon fibers

Identifiers

DOI
10.1088/1742-6596/1683/5/052002
Journal
Journal of Physics: Conference Series
Year
2020