Mass transport limitation in inlet periphery of fuel cells

Studied on a planar Solid Oxide Fuel Cell

Özgür Aydın, Tatsuhiro Ochiai, Hironori Nakajima, Tatsumi Kitahara, Kohei Ito, Yusuke Ogura, Jun Shimano

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

It was recently clarified on a microtubular Solid Oxide Fuel Cell (SOFC) that the range of mass transport limitation might commence from the inlet periphery (inlet opening and inlet pipe), i.e., the concentration gradient of reactants may extend inward the inlet periphery. For demonstrating that this phenomenon occurs regardless of the form and type of the fuel cell operating at high reactant utilization rate, herein we investigate the mass transport in the anode side of a one-cell stack of a planar SOFC. The investigation leans upon experimental and numerical data analyzed from both conventional (non spatial) and spatial perspectives. The experimental data were spatially obtained in the lateral direction by applying the segmentation method. Regarding analyses let us to confirm that mass transport limitation occurs in the inlet periphery of the planar stack. Besides, the critical ratio of the consumed/supplied mass fluxes of hydrogen is valid for assessing whether the concentration gradient of hydrogen extends inward the inlet periphery. Furthermore, the virtual inlet opening is useful for accurately calculating the mass transport within the active field of the stack via hypothetically preventing the mass transport limitation in the inlet periphery. These findings are expected to help researchers and engineers for accurately designing and characterizing fuel cell systems at varying scales from cells to stacks.

Original languageEnglish
Pages (from-to)17420-17430
Number of pages11
JournalInternational Journal of Hydrogen Energy
Volume43
Issue number36
DOIs
Publication statusPublished - Sep 6 2018

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solid oxide fuel cells
Solid oxide fuel cells (SOFC)
fuel cells
Fuel cells
Mass transfer
gradients
Hydrogen
hydrogen
cells
engineers
Anodes
anodes
Pipe
Engineers

All Science Journal Classification (ASJC) codes

  • Renewable Energy, Sustainability and the Environment
  • Fuel Technology
  • Condensed Matter Physics
  • Energy Engineering and Power Technology

Cite this

Mass transport limitation in inlet periphery of fuel cells : Studied on a planar Solid Oxide Fuel Cell. / Aydın, Özgür; Ochiai, Tatsuhiro; Nakajima, Hironori; Kitahara, Tatsumi; Ito, Kohei; Ogura, Yusuke; Shimano, Jun.

In: International Journal of Hydrogen Energy, Vol. 43, No. 36, 06.09.2018, p. 17420-17430.

Research output: Contribution to journalArticle

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