Degradation of solid oxide fuel cell metallic interconnects in fuels containing sulfur

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Hydrogen is the main fuel for all types of fuel cells except direct methanol fuel cells. Hydrogen can be generated from all manner of fossil fuels, including coal, natural gas, diesel, gasoline, other hydrocarbons, and oxygenates (e.g., methanol, ethanol, butanol, etc.). Impurities in the fuel can cause significant performance problems and sulfur, in particular, can decrease the cell performance of fuel cells, including solid oxide fuel cells (SOFC). In the SOFC, the high (800-1000°C) operating temperature yields advantages (e.g., internal fuel reforming) and disadvantages (e.g., material selection and degradation problems). Significant progress in reducing the operating temperature of the SOFC ... continued below

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Ziomek-Moroz, M. & Hawk, Jeffrey A. January 1, 2005.

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Hydrogen is the main fuel for all types of fuel cells except direct methanol fuel cells. Hydrogen can be generated from all manner of fossil fuels, including coal, natural gas, diesel, gasoline, other hydrocarbons, and oxygenates (e.g., methanol, ethanol, butanol, etc.). Impurities in the fuel can cause significant performance problems and sulfur, in particular, can decrease the cell performance of fuel cells, including solid oxide fuel cells (SOFC). In the SOFC, the high (800-1000°C) operating temperature yields advantages (e.g., internal fuel reforming) and disadvantages (e.g., material selection and degradation problems). Significant progress in reducing the operating temperature of the SOFC from ~1000 ºC to ~750 ºC may allow less expensive metallic materials to be used for interconnects and as balance of plant (BOP) materials. This paper provides insight on the material performance of nickel, ferritic steels, and nickel-based alloys in fuels containing sulfur, primarily in the form of H2S, and seeks to quantify the extent of possible degradation due to sulfur in the gas stream.

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  • 30th International Technical Conference on Coal Utilization & Fuel Systems, Clearwater, Florida, April 17-22, 2005

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  • Report No.: DOE/ARC-2005-020
  • Grant Number: None
  • Office of Scientific & Technical Information Report Number: 895398
  • Archival Resource Key: ark:/67531/metadc883913

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  • January 1, 2005

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  • Sept. 22, 2016, 2:13 a.m.

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  • Nov. 4, 2016, 1:48 p.m.

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Ziomek-Moroz, M. & Hawk, Jeffrey A. Degradation of solid oxide fuel cell metallic interconnects in fuels containing sulfur, article, January 1, 2005; (digital.library.unt.edu/ark:/67531/metadc883913/: accessed August 19, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.