An anode-supported micro-tubular solid oxide fuel cell with redox stable composite cathode

Xiaozhen Zhang, Lin Bin, Yihan Ling, Yingchao Dong, Guangyao Meng, Xingqin Liu*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

32 Scopus citations

Abstract

A NiO-YSZ anode-supported hollow fiber solid oxide fuel cell (HF-SOFC) has been fabricated with redox stable (La0.75Sr0.25) 0.95Cr0.5Mn0.5O3-δ-Sm 0.2Ce0.8O1.9-YSZ (LSCM-SDC-YSZ) composite cathode. The characterization of NiO-YSZ hollow fibers prepared by the phase inversion method is focused on the microstructure, porosity, bending strength and electrical conductivity. A thin YSZ electrolyte membrane (about 10 μm) can be prepared by a vacuum-assisted dip-coating process and is characterized in terms of microstructure and gas-tightness. The performance of the as-prepared HF-SOFC is investigated at 750-850 °C with humidified H2 as fuel and ambient air as the oxidant. The peak power densities of 513, 408 and 278 mW cm-2 can be obtained at 850, 800 and 750 °C, respectively, and the corresponding interfacial polarization resistances are 0.14, 0.29 and 0.59 Ω cm2. The high performance at intermediate-to-high temperatures could be attributed to thin electrolyte and proper composite cathode with low interfacial polarization resistance. The low interfacial polarization resistance suggests potential applications of LSCM-SDC-YSZ composite oxides as the redox stable cathode. This investigation indicates that the redox stable LSCM-SDC-YSZ is a promising cathode material system for the next generation YSZ-based HF-SOFC. The results will be expected to open up a new phase of the research on the micro-tubular SOFCs.

Original languageEnglish (US)
Pages (from-to)8654-8662
Number of pages9
JournalInternational Journal of Hydrogen Energy
Volume35
Issue number16
DOIs
StatePublished - Aug 1 2010

Keywords

  • Electrochemical performance
  • Hollow fiber
  • Phase inversion
  • Redox stable cathode
  • Solid oxide fuel cell

ASJC Scopus subject areas

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

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