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A modified DC Hebb–Wagner polarization method for determining the partial protonic electrical conductivity in mixed-conducting BaGd0.3La0.7Co2O6−δ
Abstract
In this work, partial protonic conductivity in mixed conducting (BZCY721) and BaGd0.3La0.7Co2O6−d (BGLC137) was studied. For this purpose, a modified DC Hebb–Wagner polarization method was used. A four-wire type of galvanic cell as well as a suitable calculation model was applied. The method was validated using proton conducting electrolyte – BaZr0.7Ce0.2Y0.1O3−d – as a reference material. For the first time, protonic partial conductivity in BaGd0.3La0.7Co2O6−d was determined. It was found that at 600 °C its total conductivity was ∼550 S cm−1, whereas the partial protonic conductivity under the same conditions was 4.4 × 10−5 S cm−1 (protonic transference number of 7.6 × 10−8). Therefore, the proposed measurement cell and the applied model allowed for the determination of a minor protonic conductivity in the BGLC137 electronic conductor.
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Authors (7)
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Ragnar Strandbakke Dr
- University of Oslo
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- Category:
- Articles
- Type:
- artykuły w czasopismach dostępnych w wersji elektronicznej [także online]
- Published in:
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Journal of Materials Chemistry A
pages 13488 - 13497,
ISSN: 2050-7488 - Language:
- English
- Publication year:
- 2024
- Bibliographic description:
- Miruszewski T., Strandbakke R., Dzierzgowski K., Szpunar I., Mielewczyk-Gryń A., Wachowski S., Gazda M., A modified DC Hebb–Wagner polarization method for determining the partial protonic electrical conductivity in mixed-conducting BaGd0.3La0.7Co2O6−δ, Journal of Materials Chemistry A, 2024,10.1039/d4ta00100a
- DOI:
- Digital Object Identifier (open in new tab) 10.1039/d4ta00100a
- Sources of funding:
- Verified by:
- Gdańsk University of Technology
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