A feasible strategy for tailoring stable spray-coated electrolyte layer in micro-tubular solid oxide fuel cells

Gonzalo Abarzua, Rednam Udayabhaskar, Ramalinga Viswanathan Mangalaraja, Jorge Durango-Petro, Jonathan Usuba, Host Flies

Research output: Contribution to journalArticlepeer-review

Abstract

By this work, the viability of the spray coating as a cost-effective and reliable technique for the coating of Ce0.9Gd0.1O1.95 (GDC) electrolyte layer on the mini-tubular NiO–GDC anodes based a solid oxide fuel cell (SOFC) fabrication was assessed. The compatibility of the anode and electrolyte was analyzed by using XRD. The variation in thickness and morphology of the electrolyte film as a function of the coating cycles was discussed with optical and scanning electron microscopes. By similar formulation, the coating of La0.6Sr0.4Fe0.8Co0.2O3 –Ce0.9Gd0.1O2–δ (LSCF–GDC) was performed to achieve porous cathode. An individual micro-tubular anode supported cell with configuration NiO–GDC/GDC/LSCF–GDC as anode/electrolyte/cathode was tested in the SOFC mode with humidified hydrogen as fuel and stationary air as oxidant. The fabricated mini-SOFC prototype that generated a maximum power density of 0.510 W/cm2 at 600°C signifies the potential of this industrially scalable low-cost coating technique.

Original languageEnglish
Pages (from-to)1389-1396
Number of pages8
JournalInternational Journal of Applied Ceramic Technology
Volume19
Issue number3
DOIs
StatePublished - 1 May 2022
Externally publishedYes

Keywords

  • GDC
  • SOFC
  • electrolyte thickness
  • power density
  • spray coating

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