Effects of cathode gas diffusion layer type and membrane electrode assembly preparation on the performance of immobilized glucose oxidase-based enzyme fuel cell

Yazici M. S., Bahar T.

ASIA-PACIFIC JOURNAL OF CHEMICAL ENGINEERING, vol.16, no.5, 2021 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 16 Issue: 5
  • Publication Date: 2021
  • Doi Number: 10.1002/apj.2686
  • Journal Name: ASIA-PACIFIC JOURNAL OF CHEMICAL ENGINEERING
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, Applied Science & Technology Source, Chemical Abstracts Core, Compendex, INSPEC
  • Keywords: enzymatic fuel cell, gas diffusion layer, impedance, oxygen reduction, proton exchange membrane, BIOFUEL CELLS, POLYETHYLENIMINE, FERROCENE, PRESSURE, MWCNTS, DESIGN
  • Istanbul Technical University Affiliated: No

Abstract

Different cathode configurations with carbon paper (CP) and carbon cloth (CC) gas diffusion layer (GDL) are combined with Nafion (R) 115 for GOx enzyme fuel cells. Catalyst-coated Nafion membrane (without a GDL) has resulted with highest impedance and lowest polarization response. Hot pressing of cathode gas diffusion electrode (GDE) onto the Nafion or physical placement onto the alternative chitosan membrane has reduced interface resistance 10 times compared with no-GDL case. The best performance for the Nafion membrane is 2.1 mA cm(-2) current density with hot-pressed CC-GDE. Smallest high-frequency electrolyte (0.55 ohm) and charge transfer resistances (0.15 ohm) were measured with physically placed CC-GDE on the alternative chitosan membrane resulting in maximum short current density of 3 mA cm(-2) with a 4-cm(2) single enzyme fuel cell.