Performance comparison of the mass transfer models with internal reforming for solid oxide fuel cell anodes

Solid Oxide Fuel Cell (SOFC) developers are presently considering both internal and external reforming fuel cell designs. Generally, the endothermic reforming reaction and excess air through the cathode provide the cooling needed to remove waste heat from the fuel cell. Current information suggests that external reforming fuel cells will require a flow rate twice the amount necessary for internal reforming fuel cells. The increased airflow could negatively impact system performance. This paper compares the performance among various external reforming hybrid configurations and an internal reforming hybrid configuration. A system configuration that uses the reformer to cool a cathode recycle stream is introduced, and a system that uses interstage external reforming is proposed. Results show that the thermodynamic performance of these proposed concepts are an improvement over a base-concept external approach, and can be better than an internal reforming hybrid system, depending on the fuel cell cooling requirements.

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Analysis of equilibrium and kinetic models of internal reforming on solid oxide fuel cell anodes: Effect on voltage, current and temperature distribution

Journal of Power Sources ◽

10.1016/j.jpowsour.2017.01.039 ◽

2017 ◽

Vol 343 ◽

pp. 83-93 ◽

Cited By ~ 14

Author(s):

Khaliq Ahmed ◽

Karl Fӧger

Keyword(s):

Fuel Cell ◽

Temperature Distribution ◽

Solid Oxide Fuel Cell ◽

Kinetic Models ◽

Solid Oxide ◽

Oxide Fuel ◽

Internal Reforming ◽

Fuel Cell Anodes

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Analysis of Heat and Mass Transfer for a Single-Planar-Anode-Supported Solid Oxide Fuel Cell Considering Internal Reforming

Journal of Thermal Science ◽

10.1007/s11630-019-1210-9 ◽

2019 ◽

Vol 29 (3) ◽

pp. 697-707 ◽

Cited By ~ 1

Author(s):

Zhuqian Zhang ◽

Yulei Wang ◽

Liming Ba

Keyword(s):

Mass Transfer ◽

Fuel Cell ◽

Solid Oxide Fuel Cell ◽

Heat And Mass Transfer ◽

Solid Oxide ◽

Oxide Fuel ◽

Internal Reforming

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Pd-substituted (La,Sr)CrO3−δ–Ce0.9Gd0.1O2−δ solid oxide fuel cell anodes exhibiting regenerative behavior

Journal of Power Sources ◽

10.1016/j.jpowsour.2010.12.050 ◽

2011 ◽

Vol 196 (6) ◽

pp. 3089-3094 ◽

Cited By ~ 75

Author(s):

David M. Bierschenk ◽

Elizabeth Potter-Nelson ◽

Cathleen Hoel ◽

Yougui Liao ◽

Laurence Marks ◽

...

Keyword(s):

Fuel Cell ◽

Solid Oxide Fuel Cell ◽

Solid Oxide ◽

Oxide Fuel ◽

Fuel Cell Anodes

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Fabrication and evaluation of solid-oxide fuel cell anodes employing reaction-sintered yttria-stabilized zirconia

Journal of Power Sources ◽

10.1016/j.jpowsour.2009.04.026 ◽

2009 ◽

Vol 193 (2) ◽

pp. 706-712 ◽

Cited By ~ 12

Author(s):

Daniel Storjohann ◽

James Daggett ◽

Neal P. Sullivan ◽

Huayang Zhu ◽

Robert J. Kee ◽

...

Keyword(s):

Fuel Cell ◽

Solid Oxide Fuel Cell ◽

Solid Oxide ◽

Yttria Stabilized Zirconia ◽

Oxide Fuel ◽

Stabilized Zirconia ◽

Fuel Cell Anodes

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Enhancing Ni Exsolution by Nonmetal B-Site Substituents (Si and P) in SrTiO3-Based Solid Oxide Fuel Cell Anodes

Energy & Fuels ◽

10.1021/acs.energyfuels.1c01985 ◽

2021 ◽

Vol 35 (18) ◽

pp. 15084-15093

Author(s):

Md Raziun Bin Mamtaz ◽

Zheng Wang ◽

Alessio Belotti ◽

Emanuele Quattrocchi ◽

Jing Yu ◽

...

Keyword(s):

Fuel Cell ◽

Solid Oxide Fuel Cell ◽

Solid Oxide ◽

Oxide Fuel ◽

Fuel Cell Anodes

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Application of an Anode Model to Investigate Physical Parameters in an Internal Reforming Solid-Oxide Fuel Cell

Journal of Fuel Cell Science and Technology ◽

10.1115/1.1895925 ◽

2005 ◽

Vol 2 (2) ◽

pp. 136-140 ◽

Cited By ~ 8

Author(s):

Eric S. Greene ◽

Maria G. Medeiros ◽

Wilson K. S. Chiu

Keyword(s):

Fuel Cell ◽

Solid Oxide Fuel Cell ◽

Structural Parameters ◽

Porous Electrode ◽

Cell Voltage ◽

Solid Oxide ◽

Physical Parameters ◽

Oxide Fuel ◽

Internal Reforming ◽

Porous Anode

A one-dimensional model of chemical and mass transport phenomena in the porous anode of a solid-oxide fuel cell, in which there is internal reforming of methane, is presented. Macroscopically averaged porous electrode theory is used to model the mass transfer that occurs in the anode. Linear kinetics at a constant temperature are used to model the reforming and shift reactions. Correlations based on the Damkohler number are created to relate anode structural parameters and thickness to a nondimensional electrochemical conversion rate and cell voltage. It is shown how these can be applied in order to assist the design of an anode.

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