This work illustrates the application to direct methanol fuel cell technology of an innovative reference electrode setup with a through-plate configuration, which enables localised measurement of electrode potential in an operating cell. The utility of the technique is demonstrated by monitoring the evolution of anode overpotential at two different locations in the cell over different time scales, ranging from minutes to hundreds of hours. The measurements provide valuable insight into critical degradation phenomena, identifying localised hydrogen evolution on the anode during short term operation and highlighting the contribution of anode temporary degradation to the overall performance decay during long term operation. This novel approach can be used as a diagnostic tool to improve operational protocols, such as refresh cycles, for direct methanol fuel cells.

In operando investigation of anode overpotential dynamics in direct methanol fuel cells

RABISSI, CLAUDIO;CASALEGNO, ANDREA
2016

Abstract

This work illustrates the application to direct methanol fuel cell technology of an innovative reference electrode setup with a through-plate configuration, which enables localised measurement of electrode potential in an operating cell. The utility of the technique is demonstrated by monitoring the evolution of anode overpotential at two different locations in the cell over different time scales, ranging from minutes to hundreds of hours. The measurements provide valuable insight into critical degradation phenomena, identifying localised hydrogen evolution on the anode during short term operation and highlighting the contribution of anode temporary degradation to the overall performance decay during long term operation. This novel approach can be used as a diagnostic tool to improve operational protocols, such as refresh cycles, for direct methanol fuel cells.
Anode overpotential; Direct methanol fuel cell; Hydrogen evolution; Reference electrode; Temporary degradation; Renewable Energy, Sustainability and the Environment; Fuel Technology; Condensed Matter Physics; Energy Engineering and Power Technology
File in questo prodotto:
File Dimensione Formato  
In operando investigation of anode overpotential dynamics in direct methanol fuel cells.pdf

Accesso riservato

Descrizione: editor
: Publisher’s version
Dimensione 1.28 MB
Formato Adobe PDF
1.28 MB Adobe PDF   Visualizza/Apri

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11311/1005358
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 13
  • ???jsp.display-item.citation.isi??? 12
social impact