Effect of Fuel Impurity on Structural Integrity of Ni‐YSZ Anode of SOFCs

Liu, Wenning N.; X, Sun; Marina, Olga A.; Pederson, Larry R.; Khaleel, Mohammad A.

doi:10.1002/9781118144527.ch10

Cited by 2 publications

(2 citation statements)

References 31 publications

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“…Efforts to lower the degradation rates further (to ∼0.5%/1000 h) while achieving longer (5000 h and beyond) endurance periods are part of the technology development. Initial work is in progress to identify the SOFC tolerance limits to contaminants present in the coal syngas. − To achieve an initial target for SOFC module life of 40000 h, a sulfur specification of 30 ppbv has been assumed for this analysis. However, this specification is subject to change as additional insights to the SOFC anode contaminant analysis are gained.…”

Section: Igfc Power Plant System Developmentmentioning

confidence: 99%

Solid Oxide Fuel Cell System Utilizing Syngas from Coal Gasifiers

Ghezel-Ayagh

Jolly

Patel

et al. 2013

Ind. Eng. Chem. Res.

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Integrated gasification fuel cell (IGFC) plants incorporating solid oxide fuel cells (SOFCs) are attractive alternatives to traditional pulverized coal-fired steam cycle and integrated gasification combined cycle power plants for centralized power generation. Key features of the IGFC power plants are high efficiency, near-zero emissions of SOx and NOx, low water consumption, and amenability to carbon dioxide (greenhouse gas) capture. Recent SOFC technology advancements and increased power density are indicative of the cost-competitiveness of IGFC systems relative to other power generation technologies utilizing coal. Commercially available coal gasification, syngas cleanup, and CO 2 separation technologies have been evaluated for the IGFC application. Selected technologies and syngas processing subsystems have been applied developing a configuration for the multi-MW (∼400 MW) SOFC system. System analyses results including plant performance projections are also discussed. Development of SOFC-based IGFC technology will promote effective utilization of the nation's vast coal reserves while addressing greenhouse gas concerns.

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Section: Igfc Power Plant System Developmentmentioning

confidence: 99%

Solid Oxide Fuel Cell System Utilizing Syngas from Coal Gasifiers

Ghezel-Ayagh

Jolly

Patel

et al. 2013

Ind. Eng. Chem. Res.

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“…[8][9][10][11] Therefore, a system of coupling a gasifier producing bio-syngas and SOFCs has been suggested by many authors with their simulation works, [12][13][14][15] tested with simulated syngas [16][17][18][19][20] and with actual bio-syngas. [21][22][23] A system using actual bio-syngas needs an additional reformer for cleaning the bio-syngas because it includes impurities such as tars, [16][17][18][19][20] sulfur, [24][25][26] and phosphorus 27,28 causing significant mechanical and electrochemical degradation. This additional reformer makes the system more complex and expensive.…”

mentioning

confidence: 99%

Utilization of Bio-Syngas in Solid Oxide Fuel Cell Stacks: Effect of Hydrocarbon Reforming

Jeong

Hauser

Fischer

et al. 2019

J. Electrochem. Soc.

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We report on state-of-the-art JÜLICH (Forschungszentrum Jülich) stack with anode-supported solid oxide fuel cells (AS-SOFCs) that have been tested in bio-syngas derived from wood pellets. The sulfur and chlorine were removed after gasification, but the tars were not reformed in the bio-syngas to study the influence of these tars on the degradation of SOFC stack. The total tar content during test was 3.5 g/Nm 3 including benzene, toluene, phenol, m-cresol, naphthalene, and minor traces of undefined tars. The test result shows considerable performance degradation in tar-contaminated syngas. Moreover, the test was stopped after 5 hours of operation due to an increase of the pressure drop in the stack. A post-test analysis was carried out, and heavy carbon deposition was found at the cell anode-support surface and the Ni mesh current collector. Carbon was identified by SEM as numerous carbon fibers. The change of support microstructure was also observed near and under the carbon deposition area, and the dusting of Ni metal was observed in the support and Ni mesh current collector.

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Effect of Fuel Impurity on Structural Integrity of Ni‐YSZ Anode of SOFCs

Cited by 2 publications

References 31 publications

Solid Oxide Fuel Cell System Utilizing Syngas from Coal Gasifiers

Solid Oxide Fuel Cell System Utilizing Syngas from Coal Gasifiers

Utilization of Bio-Syngas in Solid Oxide Fuel Cell Stacks: Effect of Hydrocarbon Reforming

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