Measurement of oxygen chemical potential in thin electrolyte film, anode-supported solid oxide fuel cells

Lim, Hyung Tae; Virkar, Anil V.

doi:10.1016/j.jpowsour.2008.01.068

Cited by 33 publications

(26 citation statements)

References 17 publications

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“…Platinum wires were attached to all electrodes. Exposed part of the embedded reference electrode was coated with a paste of an oxygen impermeable sealing glass in ethylene glycol, and fired at 850 • C to isolate it from the atmosphere [22].Cell test: The bi-layer disk was loaded in a test fixture and inserted into a tube furnace. A voltmeter was connected between the surface and embedded reference electrodes.…”

Section: Generation and Measurement Of High Internal Oxygen Pressuresmentioning

confidence: 99%

A study of solid oxide fuel cell stack failure by inducing abnormal behavior in a single cell test

Lim¹,

Virkar²

2008

Journal of Power Sources

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Section: Generation and Measurement Of High Internal Oxygen Pressuresmentioning

confidence: 99%

A study of solid oxide fuel cell stack failure by inducing abnormal behavior in a single cell test

Lim¹,

Virkar²

2008

Journal of Power Sources

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“…Its reactivity with the standard zirconia electrolyte can be suppressed by using an yttria-stabilized ceria interlayer. The polarization resistance of the cathode is also dependent on the microstructure and thus on the preparation process [1,2]. In a separate report the influence of the sintering temperature on microstructure and polarization resistance of screen printed LSCF cathodes is presented [3].…”

Section: Introductionmentioning

confidence: 99%

Improved cathode/electrolyte interface of SOFC

Hildenbrand¹,

Boukamp²,

Nammensma³

et al. 2011

Solid State Ionics

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“…Two platinum (Pt) reference electrodes were embedded within the electrolyte. Procedure for embedding platinum probes (reference electrodes) within the electrolyte has been previously described (6). The cathode for both cells was porous LSM + YSZ with a layer of porous LSM on top as a current collector.…”

Section: Methodsmentioning

confidence: 99%

Electrochemical Degradation of Fuel Cells: Effect of Electrolyte Composition

Lim

Virkar²

2009

ECS Trans.

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Under some conditions, a solid oxide fuel cell (SOFC) stack can fail provided one (or more) cell(s) exhibit higher resistance than the rest of the cells. Such a cell can operate under a negative voltage prior to the onset of degradation. This phenomenon is not limited to SOFC. Recently, a model for SOFC stack degradation when a cell begins to operate under a negative voltage due to 'cell imbalance' was presented (1). Subsequently, experimental evidence for degradation was presented by investigating cell (stack) failure mechanism (2). When operated under a negative voltage of a sufficient magnitude, anode/electrolyte interface delaminated. The model shows that electronic conduction through the electrolyte plays a significant role. In the present work anodesupported cells were made of two different electrolyte compositions: 8YSZ and 92% 8YSZ + 8% CeO 2 (8CYSZ). It was observed that when operated under a negative voltage, the cell with 8YSZ exhibited considerable degradation attributed to electrolyte/anode interface delamination. By contrast, the cell with 8CYSZ exhibited no degradation under similar testing conditions. Results are explained on the basis of electronic conduction and the previously described degradation model.

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Measurement of oxygen chemical potential in thin electrolyte film, anode-supported solid oxide fuel cells

Cited by 33 publications

References 17 publications

A study of solid oxide fuel cell stack failure by inducing abnormal behavior in a single cell test

A study of solid oxide fuel cell stack failure by inducing abnormal behavior in a single cell test

Improved cathode/electrolyte interface of SOFC

Electrochemical Degradation of Fuel Cells: Effect of Electrolyte Composition

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