Modelling effects of current distributions on performance of micro-tubular hollow fibre solid oxide fuel cells

Doraswami, Uttam; Droushiotis, Nicolas; Kelsall, G. H.

doi:10.1016/j.electacta.2010.01.080

Cited by 28 publications

(26 citation statements)

References 60 publications

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“…where k s stands for thermal conductivity of solid, and k f is the effective thermal conductivity of the fluid which is expressed as [46]:…”

Section: Governing Equations For Mass Momentum and Energy Transfermentioning

confidence: 99%

Effects of electrode composition on the electrochemical performance and mechanical property of micro-tubular solid oxide fuel cell

Lin

2012

International Journal of Hydrogen Energy

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“…where k s stands for thermal conductivity of solid, and k f is the effective thermal conductivity of the fluid which is expressed as [46]:…”

Section: Governing Equations For Mass Momentum and Energy Transfermentioning

confidence: 99%

Effects of electrode composition on the electrochemical performance and mechanical property of micro-tubular solid oxide fuel cell

Lin

2012

International Journal of Hydrogen Energy

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“…Studies also confirm that existing current collection methods for micro-tubular SOFC can limit length of a cell just to a few centimetres [14], above which the SOFC performance is affected. According to Doraswami et al [15], the highest current density and the most stable performance is predicted when meshed current collectors are employed on both electrodes of micro-tubular SOFC.…”

Section: Introductionmentioning

confidence: 99%

NI/NI‐YSZ Current Collector/Anode Dual Layer Hollow Fibers for Micro‐Tubular Solid Oxide Fuel Cells

et al. 2011

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A co‐extrusion technique was employed to fabricate a novel dual layer NiO/NiO‐YSZ hollow fiber (HF) precursor which was then co‐sintered at 1,400 °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. The inner thin and highly porous “mesh‐like” pure Ni layer of approximately 50 μm in thickness functions as a current collector in micro‐tubular solid oxide fuel cell (SOFC), aiming at highly efficient current collection with low fuel diffusion resistance, while the thicker outer Ni‐YSZ layer of 260 μm acts as an anode, providing also major mechanical strength to the dual‐layer HF. Achieved morphology consisted of short finger‐like voids originating from the inner lumen of the HF, 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 is measured to be 77.5 × 105 S m–1. This result is significantly higher than previous reported results on single layer Ni‐YSZ HFs, which performs not only as a catalyst for the oxidation reaction, but also as a current collector. These results highlight the advantages of this novel dual‐layer HF design as a new and highly efficient way of collecting current from the lumen of micro‐tubular SOFC.

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“…However, to the best knowledge of the authors, all the existing CFD modelling works [12,13], are based on homogenous electrode assumption that the morphology of the channelled electrode is quantified using macroscopic parameters e.g. porosity and tortuosity.…”

Section: Introductionmentioning

confidence: 99%

Modelling of finger-like channelled anode support for SOFCs application

Chen

2016

Science Bulletin

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Modelling effects of current distributions on performance of micro-tubular hollow fibre solid oxide fuel cells

Cited by 28 publications

References 60 publications

Effects of electrode composition on the electrochemical performance and mechanical property of micro-tubular solid oxide fuel cell

Effects of electrode composition on the electrochemical performance and mechanical property of micro-tubular solid oxide fuel cell

NI/NI‐YSZ Current Collector/Anode Dual Layer Hollow Fibers for Micro‐Tubular Solid Oxide Fuel Cells

Modelling of finger-like channelled anode support for SOFCs application

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