A dual layer Ni/Ni-YSZ hollow fibre for micro-tubular SOFC anode support with a current collector

Krzysztof Kanawka, Mohd Hafiz Dzarfan Othman, Zhentao Wu, Nicolas Droushiotis, Geoff Kelsall, Kang Li*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review


A co-extrusion technique was employed to fabricate a dual layer NiO/NiO-YSZ hollow fibre precursor which was then co-sintered at 1400 °C and reduced at 700 °C to form, respectively, a meshed porous inner Ni current collector and outer Ni-YSZ anode layers for SOFC applications. Achieved morphology consisted of short finger-like voids originating from the inner bore of the hollow fibre, and a sponge-like structure filling most of the Ni-YSZ anode layer, which is considered to be suitable macrostructure for anode SOFC system. The electrical conductivity of the meshed porous inner Ni layer was measured to be 77.5 × 105 S m- 1. This result is significantly higher than previous reported results on single layer Ni-YSZ hollow fibres, which besides performing a catalyst function for the oxidation reaction also act as a current collector. These results highlight the advantages of this dual-layer hollow fibre design especially in developing a new and highly efficient way in current collection for micro-tubular SOFC.

Original languageEnglish
Pages (from-to)93-95
Number of pages3
JournalElectrochemistry Communications
Issue number1
Publication statusPublished - 1 Jan 2011


  • Dual layer
  • Hollow fibre
  • Phase inversion
  • Sintering
  • SOFC
  • YSZ


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