Home > Publications database > Bulk and grain boundary conductivity in doped BaZrO3: Bulk contribution dominates at operating temperatures > print

001     1018243
005     20250204113738.0
024 7 _ |a 10.1016/j.scriptamat.2023.115852
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024 7 _ |a 1359-6462
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024 7 _ |a 1872-8456
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024 7 _ |a 10.34734/FZJ-2023-04639
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037 _ _ |a FZJ-2023-04639
041 _ _ |a English
082 _ _ |a 670
100 1 _ |a Ebert, Julian
|0 P:(DE-Juel1)187107
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|e Corresponding author
245 _ _ |a Bulk and grain boundary conductivity in doped BaZrO3: Bulk contribution dominates at operating temperatures
260 _ _ |a Amsterdam [u.a.]
|c 2024
|b Elsevier Science
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500 _ _ |a Paper ist Gold Open AccessWeitere Grants sind:Emmy Noether Programme under contract no. Rh 146/1–1Helmholtz Association of German Research Centers (HGF) and the Federal Ministry of Education and Research (BMBF), Innovation Pool project “Solar H2: Highly Pure and Compressed”
520 _ _ |a This study evaluates the role of microstructure for the conductivity of BaZrO3-based protonic conductors. Bulk conductivity was found to be the limiting conductivity contribution in BaZr0.8Y0.2O3-δ (BZY20) and BaZr0.7Ce0.2Y0.1O3-δ (BZCY72) at operating temperatures. The effective grain boundary conductivity only dominates the total conductivity below a crossover point (200 °C for BZY20, 150 °C for BZCY72). The crossover point was determined by using a well-calibrated electrochemical impedance spectroscopy setup to measure from 600 °C to 50 °C with up to 10 MHz. As such, bulk and grain boundary could be fitted separately up to 350 °C instead of 200 °C, as often seen in literature. According to these results, the impact of grain boundaries on the total conductivity of BZY20 and BZCY72 at operating temperature might be less than assumed. Therefore, research should not only focus on increasing the conductivity of the grain boundary, but also on maximizing the bulk conductivity.
536 _ _ |a 1231 - Electrochemistry for Hydrogen (POF4-123)
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536 _ _ |a SFB 1548 B04 - Einfluss der grundlegenden elektronischen Struktur auf die Korngrenzeigenschaften in oxidischen Perowskiten (B04) (513417808)
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700 1 _ |a Jennings, Dylan
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700 1 _ |a Schäfer, Laura-Alena
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700 1 _ |a Sebold, Doris
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700 1 _ |a Rheinheimer, Wolfgang
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773 _ _ |a 10.1016/j.scriptamat.2023.115852
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|x 1359-6462
856 4 _ |u https://juser.fz-juelich.de/record/1018243/files/Invoice_OAD0000363129.pdf
856 4 _ |u https://juser.fz-juelich.de/record/1018243/files/1-s2.0-S1359646223005730-main.pdf
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