Tubular SOFC Air Electrode Ohmic Overpotential: Parametric and Exergy Study

Authors

Khalid Zouhri, Michigan Technological University
Seong-Young Lee, Michigan Technological UniversityFollow

Document Type

Article

Publication Date

8-2016

Department

Department of Mechanical Engineering-Engineering Mechanics

Abstract

The SOFC efficiency still can be improved by reducing the overpotential losses, However to battle this issue, band gap engineering of SOFC material needs to be considered. In this work, we analyzed the effect of various materials parameters and environmental conditions on the performance of SOFC. To maintain the optimum performance for SOFCs and to enhance the energy and exergy efficiency in practical application environments, it is recommended to have the oxygen vacancy concentration at 0.2, diffusion coefficient at 0.00005 cm²s^-1, cathode porosity of 0.3, tortuosity of 1.5, chemical capacitance at 2.7Fcm^-2, the conductor electrolyte interface at 0.0004cm, surface area of the porous conductor at 50,000 cm²cm^-3, and operating temperature of 1000 °C.

Publisher's Statement

© 2016 Elsevier Ltd. All rights reserved.

Publication Title

Energy Conversion and Management

Recommended Citation

Zouhri, K., & Lee, S. (2016). Tubular SOFC Air Electrode Ohmic Overpotential: Parametric and Exergy Study. Energy Conversion and Management, 121, 1-12. http://doi.org/10.1016/j.enconman.2016.04.098
Retrieved from: https://digitalcommons.mtu.edu/michigantech-p/6335