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The Effect of Operational Voltage on a Solid Oxide Fuel Cell Operating on Coal Syngas Containing Trace Amounts of Phosphine

Kaufman, Brian A.
http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1300119842

Abstract Details

2011, Master of Science (MS), Ohio University, Mechanical Engineering (Engineering and Technology).
Electrolyte-supported Solid Oxide Fuel Cells have been proven capable of generating usable electricity when supplied with various fuels, including a synthetic fuel (syngas) generated from gasified coal. Coal, however, contains contaminants, namely phosphine (PH3), that remain in the syngas despite cleanup technologies, which can lead to lowered electrical performance caused by the formation of secondary compounds. This study investigates a strategy of varying the operational voltage to potentially mitigate the formation of secondary compounds, including nickel phosphide (NixPy), thus prolonging the life of the cell. Two operational voltage conditions were investigated, 0.7 volts and 0.6 volts, with four cells per voltage tested. The degradation of the cell was determined using electrical data generated as well as with material analysis. Post-mortem cells were analyzed for the presence of secondary formations with techniques including XRD, SEM/EDX, and XPS. The results indicate that the operational voltage has little effect on the formation of nickel phosphides and the prevailing nickel phosphide specie was Ni2P in both operational voltage conditions.
David Bayless (Advisor)
Gregory Kremer (Committee Member)
Carole Womeldorf (Committee Member)
Gang Chen (Committee Member)
159 p.
Engineering; Mechanical Engineering
Solid Oxide Fuel Cell; operational voltage; phosphine; SOFC

Recommended Citations

Citations

  • Kaufman, B. A. (2011). The Effect of Operational Voltage on a Solid Oxide Fuel Cell Operating on Coal Syngas Containing Trace Amounts of Phosphine [Master's thesis, Ohio University]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1300119842

    APA Style (7th edition)

  • Kaufman, Brian. The Effect of Operational Voltage on a Solid Oxide Fuel Cell Operating on Coal Syngas Containing Trace Amounts of Phosphine. 2011. Ohio University, Master's thesis. OhioLINK Electronic Theses and Dissertations Center, http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1300119842.

    MLA Style (8th edition)

  • Kaufman, Brian. "The Effect of Operational Voltage on a Solid Oxide Fuel Cell Operating on Coal Syngas Containing Trace Amounts of Phosphine." Master's thesis, Ohio University, 2011. http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1300119842

    Chicago Manual of Style (17th edition)

ohiou1300119842
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© 2011, all rights reserved.
This open access ETD is published by Ohio University and OhioLINK.