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Researchers improved electrolysis cell performance by adding PVDF and graphite powder to MEA for regenerative fuel cells, achieving lower voltage and increased stability.

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What they did

System
MFC

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Abstract

For the regenerative fuel cell (RFC), water electrolysis cell performance using membrane electrode assembly (MEA) in polymer electrolyte fuel cell (PEMFC) were investigated. A part of Nafion had been secondary sprayed on the surface of catalytic layer and variation of cell performance was diminished. The conformation of stability, improvement of mechanical and electrical properties was accomplished by addition of PVDF, graphite and RuO2. With the addition of graphite power and RuO2, the voltage was decreased from 3.6V to 2.5V and 2.2V. The improvement of the mechanical properties was obtained by addition of PVDF. The electrolysis cell manufactured with MEA electrode was showed less decomposition voltage of 1.3V than with Nafion electrode at 10A of applied current. The stability of MEA was confirmed from 30 days of cell operation

Key findings

  • Voltage decreased from 3.6V to 2.5V and 2.2V with addition of graphite power and RuO2.
  • Mechanical properties improved with addition of PVDF.
  • MEA showed less decomposition voltage of 1.3V than Nafion electrode at 10A of applied current.

Keywords

Membrane electrode assemblyElectrolysisGraphiteNafionElectrodeElectrolyte

Identifiers

DOI
10.4028/www.scientific.net/amr.26-28.849
Journal
Advanced Materials Research
Year
2007