A new electrolyte based on Tm3+-doped delta-Bi2O3-type phase with enhanced conductivity
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2015
Authors
Dapčević, Aleksandra
Poleti, Dejan
Rogan, Jelena
Radojković, Aleksandar

Radović, M.
Branković, Goran

Article (Published version)

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The possibility to stabilize the delta-Bi2O3-type polymorph with high ionic conductivity by doping with Tm2O3 was investigated in this study. Five microaystalline samples were synthesized at 750 degrees C from alpha-Bi2O3 and Tm2O3 mixtures with compositions (Bi1-xTmx)(2)O-3, where x = 0.04, 0.08, 0.11, 0.14 and 0.20. The XRD, SEM, HRTEM and SAED results showed that the targeted delta-Bi2O3-type single-phase (space group Fm (3) over barm) was formed for 0.11 lt = x lt = 0.20. The unit cell parameter of delta-Bi2O3-type phase decreases with increase in Tm content. According to DTA, no phase transitions were observed in the sample with x = 020, indicating that the obtained delta-Bi2O3-type phase is structurally stable from room temperature to 985 degrees C. Based on EIS, (Bi0.80Tm0.20)(2)O-3 exhibits high conductivity (0.117 S cm(-1) at 550 degrees C) with activation energies: 0.38(4) eV above 550 degrees C and 127(2) eV below 550 degrees C, due to the change in charge carrier mobility.... The effect of thermal aging was investigated and discussed.
Keywords:
Stability / Solid oxide fuel cell / Oxide ion conductor / Electrolyte / delta-Bi2O3-type phaseSource:
Solid State Ionics, 2015, 280, 18-23Publisher:
- Elsevier Science Bv, Amsterdam
Funding / projects:
- Zero- to Three-Dimensional Nanostructures for Application in Electronics and Renewable Energy Sources: Synthesis, Characterization and Processing (RS-45007)
- U.S. National Science FoundationNational Science Foundation (NSF) [DMR-1057155]
DOI: 10.1016/j.ssi.2015.08.004
ISSN: 0167-2738
WoS: 000362605500003
Scopus: 2-s2.0-84940471546
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Institut za multidisciplinarna istraživanjaTY - JOUR AU - Dapčević, Aleksandra AU - Poleti, Dejan AU - Rogan, Jelena AU - Radojković, Aleksandar AU - Radović, M. AU - Branković, Goran PY - 2015 UR - http://rimsi.imsi.bg.ac.rs/handle/123456789/840 AB - The possibility to stabilize the delta-Bi2O3-type polymorph with high ionic conductivity by doping with Tm2O3 was investigated in this study. Five microaystalline samples were synthesized at 750 degrees C from alpha-Bi2O3 and Tm2O3 mixtures with compositions (Bi1-xTmx)(2)O-3, where x = 0.04, 0.08, 0.11, 0.14 and 0.20. The XRD, SEM, HRTEM and SAED results showed that the targeted delta-Bi2O3-type single-phase (space group Fm (3) over barm) was formed for 0.11 lt = x lt = 0.20. The unit cell parameter of delta-Bi2O3-type phase decreases with increase in Tm content. According to DTA, no phase transitions were observed in the sample with x = 020, indicating that the obtained delta-Bi2O3-type phase is structurally stable from room temperature to 985 degrees C. Based on EIS, (Bi0.80Tm0.20)(2)O-3 exhibits high conductivity (0.117 S cm(-1) at 550 degrees C) with activation energies: 0.38(4) eV above 550 degrees C and 127(2) eV below 550 degrees C, due to the change in charge carrier mobility. The effect of thermal aging was investigated and discussed. PB - Elsevier Science Bv, Amsterdam T2 - Solid State Ionics T1 - A new electrolyte based on Tm3+-doped delta-Bi2O3-type phase with enhanced conductivity EP - 23 SP - 18 VL - 280 DO - 10.1016/j.ssi.2015.08.004 ER -
@article{ author = "Dapčević, Aleksandra and Poleti, Dejan and Rogan, Jelena and Radojković, Aleksandar and Radović, M. and Branković, Goran", year = "2015", abstract = "The possibility to stabilize the delta-Bi2O3-type polymorph with high ionic conductivity by doping with Tm2O3 was investigated in this study. Five microaystalline samples were synthesized at 750 degrees C from alpha-Bi2O3 and Tm2O3 mixtures with compositions (Bi1-xTmx)(2)O-3, where x = 0.04, 0.08, 0.11, 0.14 and 0.20. The XRD, SEM, HRTEM and SAED results showed that the targeted delta-Bi2O3-type single-phase (space group Fm (3) over barm) was formed for 0.11 lt = x lt = 0.20. The unit cell parameter of delta-Bi2O3-type phase decreases with increase in Tm content. According to DTA, no phase transitions were observed in the sample with x = 020, indicating that the obtained delta-Bi2O3-type phase is structurally stable from room temperature to 985 degrees C. Based on EIS, (Bi0.80Tm0.20)(2)O-3 exhibits high conductivity (0.117 S cm(-1) at 550 degrees C) with activation energies: 0.38(4) eV above 550 degrees C and 127(2) eV below 550 degrees C, due to the change in charge carrier mobility. The effect of thermal aging was investigated and discussed.", publisher = "Elsevier Science Bv, Amsterdam", journal = "Solid State Ionics", title = "A new electrolyte based on Tm3+-doped delta-Bi2O3-type phase with enhanced conductivity", pages = "23-18", volume = "280", doi = "10.1016/j.ssi.2015.08.004" }
Dapčević, A., Poleti, D., Rogan, J., Radojković, A., Radović, M.,& Branković, G.. (2015). A new electrolyte based on Tm3+-doped delta-Bi2O3-type phase with enhanced conductivity. in Solid State Ionics Elsevier Science Bv, Amsterdam., 280, 18-23. https://doi.org/10.1016/j.ssi.2015.08.004
Dapčević A, Poleti D, Rogan J, Radojković A, Radović M, Branković G. A new electrolyte based on Tm3+-doped delta-Bi2O3-type phase with enhanced conductivity. in Solid State Ionics. 2015;280:18-23. doi:10.1016/j.ssi.2015.08.004 .
Dapčević, Aleksandra, Poleti, Dejan, Rogan, Jelena, Radojković, Aleksandar, Radović, M., Branković, Goran, "A new electrolyte based on Tm3+-doped delta-Bi2O3-type phase with enhanced conductivity" in Solid State Ionics, 280 (2015):18-23, https://doi.org/10.1016/j.ssi.2015.08.004 . .