Review and analysis of characterization methods and ionic conductivities for low-temperature solid oxide fuel cells (LT-SOFC)

Janne Patakangas*, Ying Ma, Yifu Jing, Peter Lund

*Tämän työn vastaava kirjoittaja

Tutkimustuotos: LehtiartikkeliLiterature reviewvertaisarvioitu

102 Sitaatiot (Scopus)

Abstrakti

In recent years, doped ceria/carbonate composite is one of the most researched low-temperature SOFC electrolyte. Its ionic conductivity, which strongly influences the performance of the fuel cell, can be measured with several different methods including EIS, constant current and product analysis measurements. The conductivities of similar materials measured under similar conditions seem to vary quite much, which could be partly explained by the sample preparation affecting the properties of the electrolyte. However, we found that the used measurement approach may impose even a larger uncertainty. Therefore, results from different conductivity measurement techniques may not be comparable. In this article, conductivities of doped ceria/carbonate composites and measurement techniques employed in recent articles have been reviewed. Pros and cons of the different measurement methods are analyzed and discrepancies found in the measured conductivity values are explained. Finally, recommendations on conductivity measurements of LT-SOFC composite electrolytes are given. (C) 2014 Elsevier B.V. All rights reserved.

AlkuperäiskieliEnglanti
Sivut315-331
Sivumäärä17
JulkaisuJournal of Power Sources
Vuosikerta263
DOI - pysyväislinkit
TilaJulkaistu - 1 lokak. 2014
OKM-julkaisutyyppiB1 Kirjoitus tieteellisessä aikakauslehdessä

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