Effect of anode functional layer on the performance of proton-conducting solid oxide fuel cells (SOFCs)

Lei Bi, Emiliana Fabbri, Enrico Traversa*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

70 Scopus citations

Abstract

A BaZr 0.4Ce 0.4Y 0.2O 3 - δ (BZCY)-NiO anode functional layer was added between the BZCY electrolyte and the BZCY-NiO anode substrate to investigate its effect on the performance of single cells. With BaZr 0.4Ce 0.4Y 0.2O 3 - δ (BZCY) as the electrolyte and composite BZCY-Ba 0.5Sr 0.5(Co 0.8Fe 0.2) 0.9Ti 0.1O 3 - δ as the cathode material, anode-supported electrolyte fuel cells were fabricated and tested. The single cell without an anode functional layer generated maximum power densities of 181, 138, 116, 77, and 49 mW cm - 2 at 700, 650, 600, 550, and 500 °C, respectively, whereas those for the single cell with an anode functional layer significantly improved up to 281, 243, 194, 145, and 95 mW cm - 2 at the same temperatures, almost doubling the power output. Electrochemical impedance spectroscopy (EIS) measurements for these two cells revealed that the addition of the anode functional layer reduced the contact resistance as well as the polarization resistance for the cell, resulting thus in the improved cell performance.

Original languageEnglish (US)
Pages (from-to)37-40
Number of pages4
JournalElectrochemistry Communications
Volume16
Issue number1
DOIs
StatePublished - Mar 1 2012

Keywords

  • Anode functional layer
  • Fuel cell performance
  • Proton conductor
  • Solid oxide fuel cell (SOFC)

ASJC Scopus subject areas

  • Electrochemistry

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