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Lim DK, Im HN, Song SJ. Spatial Distribution of Oxygen Chemical Potential under Potential Gradients and Theoretical Maximum Power Density with 8YSZ Electrolyte. Sci Rep. 2016;6:18804doi: 10.1038/srep18804.
Lim, D. K., Im, H. N., & Song, S. J. (2016). Spatial Distribution of Oxygen Chemical Potential under Potential Gradients and Theoretical Maximum Power Density with 8YSZ Electrolyte. Scientific reports, 618804. https://doi.org/10.1038/srep18804
Lim, Dae-Kwang, et al. "Spatial Distribution of Oxygen Chemical Potential under Potential Gradients and Theoretical Maximum Power Density with 8YSZ Electrolyte." Scientific reports vol. 6 (2016): 18804. doi: https://doi.org/10.1038/srep18804
Lim DK, Im HN, Song SJ. Spatial Distribution of Oxygen Chemical Potential under Potential Gradients and Theoretical Maximum Power Density with 8YSZ Electrolyte. Sci Rep. 2016 Jan 04;6:18804. doi: 10.1038/srep18804. PMID: 26725369; PMCID: PMC4698742.
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Sci Rep. 2016 Jan 04;6:18804. doi: 10.1038/srep18804.

Spatial Distribution of Oxygen Chemical Potential under Potential Gradients and Theoretical Maximum Power Density with 8YSZ Electrolyte.

Scientific reports

Dae-Kwang Lim, Ha-Ni Im, Sun-Ju Song

Affiliations

  1. Department of Materials Science and Engineering, Chonnam National University,?77 Yongbong-ro, Buk-gu, Gwangju, 500-757, Korea.

PMID: 26725369 PMCID: PMC4698742 DOI: 10.1038/srep18804

Abstract

The maximum power density of SOFC with 8YSZ electrolyte as the function of thickness was calculated by integrating partial conductivities of charge carriers under various DC bias conditions at a fixed oxygen chemical potential gradient at both sides of the electrolyte. The partial conductivities were successfully taken using the Hebb-Wagner polarization method as a function of temperature and oxygen partial pressure, and the spatial distribution of oxygen partial pressure across the electrolyte was calculated based on Choudhury and Patterson's model by considering zero electrode polarization. At positive voltage conditions corresponding to SOFC and SOEC, the high conductivity region was expanded, but at negative cell voltage condition, the low conductivity region near n-type to p-type transition was expanded. In addition, the maximum power density calculated from the current-voltage characteristic showed approximately 5.76 W/cm(2) at 700 (o)C with 10 μm thick-8YSZ, while the oxygen partial pressure of the cathode and anode sides maintained ≈0.21 and 10(-22) atm.

References

  1. Nat Mater. 2003 May;2(5):320-3 - PubMed
  2. Science. 2011 Nov 18;334(6058):935-9 - PubMed
  3. Membranes (Basel). 2012 Aug 31;2(3):585-664 - PubMed
  4. Sci Rep. 2014 Aug 29;4:5754 - PubMed

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