Search Results - "Gemmen, Randall S."

Degradation measurement and analysis for cells and stacks by Gemmen, Randall S., Williams, Mark C., Gerdes, Kirk

“…Past research in solid oxide fuel cell (SOFC) performance assessment and improvement has focused on cell operating voltage (efficiency). Related to this…”
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Effect of load transients on SOFC operation—current reversal on loss of load by Gemmen, Randall S., Johnson, Christopher D.

“…The dynamics of solid oxide fuel cell (SOFC) operation have been considered previously, but mainly through the use of one-dimensional codes applied to co-flow…”
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Modeling of oxygen reduction mechanism for 3PB and 2PB pathways at solid oxide fuel cell cathode from multi-step charge transfer by Gong, Mingyang, Gemmen, Randall S., Liu, Xingbo

“…► 1-D model to for ORR of cathode by incorporating multi-step charge-transfer into the bi-pathway. ► It addresses kinetics of surface O − production and its…”
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The performance of solid oxide fuel cells with Mn–Co electroplated interconnect as cathode current collector by Wu, Junwei, Johnson, Christopher D., Gemmen, Randall S., Liu, Xingbo

“…To add a coating on a metallic interconnect is one option to prevent Cr poisoning of the cathode and to retain high conductivity during solid oxide fuel cells…”
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Solid – state electrochemical heat engines by Richards, George, Gemmen, Randall S., Williams, Mark C.

“…This paper explores the potential of using solid-state electrochemical heat engines (EHE) operating on reversible redox reactions to generate electric power…”
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Investigation of Mn/Co coated T441 alloy as SOFC interconnect by on-cell tests by Wu, Junwei, Gemmen, Randall S., Manivannan, Ayyakkannu, Liu, Xingbo

“…T441 has been identified as the candidate for SOFC interconnect material because it is assumed that with the addition of Nb, Ti in T441, the formation of…”
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Pulse plating of Mn–Co alloys for SOFC interconnect applications by Wu, Junwei, Johnson, Christopher D., Jiang, Yinglu, Gemmen, Randall S., Liu, Xingbo

“…(Mn,Co) 3O 4 Spinel is a promising coating for SOFC interconnect applications due to its high conductivity and good chromium retention capability…”
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Protonated Forms of Monoclinic Zirconia: A Theoretical Study by Mantz, Yves A, Gemmen, Randall S

“…In various materials applications of zirconia, protonated forms of monoclinic zirconia may be formed, motivating their study within the framework of…”
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Operation of a solid oxide fuel cell on a reformed FAME mixture by Siefert, Nicholas S., Shekhawat, Dushyant, Smith, Mark W., Haynes, Daniel J., Bergen, Richard M., Robey, Edward H., Gemmen, Randall S., Berry, David A.

“…The operation of a solid oxide fuel cell (SOFC) using a reformed fatty acid methyl ester (FAME) mixture a biodiesel-like fuel, has been successfully…”
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Effects of cell-to-cell fuel mal-distribution on fuel cell performance and a means to reduce mal-distribution using MEMS micro-valves by Hensel, J. Peter, Gemmen, Randall S., Thornton, Jimmy D., Vipperman, Jeffrey S., Clark, William W., Bucci, Brian A.

“…Achieving uniform flow among the cells of a fuel cell stack plays a significant role in being able to operate at maximum capability and efficiency. This paper…”
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Protonated Forms of Monoclinic Zirconia: A Theoretical Study by Mantz, Yves A., Gemmen, Randall S.

“…In various materials applications of zirconia, protonated forms of monoclinic zirconia may be formed, motivating their study within the framework of…”
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An improved small-signal model of the dynamic behavior of PEM fuel cells by Lu-Ying Chiu, Diong, B., Gemmen, R.S.

“…The dynamic behavior of a fuel cell is integral to the overall stability and performance of the power system formed by the fuel supply, fuel cell stack, power…”
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Electrochemical circuit model of a PEM fuel cell by Famouri, P., Gemmen, R.S.

“…A dynamic circuit model for a fuel cell is presented. The model accounts for flow transients, the reactant partial pressures, as well as loss mechanisms within…”
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