Investigation of Thermal, Structural and Electrical Properties of LaMnO<sub>3</sub>-Sigma

Kassahun Lewetegn Damena

doi:doi:10.11648/j.ajn.20190504.14

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Investigation of Thermal, Structural and Electrical Properties of LaMnO₃-Sigma

Kassahun Lewetegn Damena

Published in American Journal of Nanosciences (Volume 5, Issue 4)

Received: 24 October 2019 Accepted: 18 November 2019 Published: 26 November 2019

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Abstract

LaMnO₃ is one of the most intensively studied cathode materials for solid oxide fuel cell (SOFC). In the present study, LaMnO_3-d, cathode materials were synthesized by combustion method. The properties of synthesized materials like thermal, structural, electrical and electrochemical were investigated. Thermogravimetric analysis (TGA/DTA) analysis confirms that the calcination temperature (1000°C) is the appropriate temperature for the preparation of the materials using La (NO₃)₃.6H₂O, MnSO₄.H₂O, Co (NO₃)₂.6H₂O, Fe (NO₃) ₃.9H₂O and C₆H₈O₇.H₂O precursors. The X-ray powder diffraction (XRD) results of the materials reveal the formation of the hexagonal structure with R3C space group Fd3m.The scanning electron microscope (SEM) characterization shows that the prepared samples have slightly porous structure with agglomerated particles. The energy dispersive spectroscopy (EDS) analysis is also confirms the presence of La, Mn and O elements in all synthesized materials. From the fourier transform infrared spectroscopy (FTIR) analysis, the most significant absorption bands located at 1629.8cm¹ and 589.9cm¹ wave numbers are identified. The room temperature conductivity of the sample is found to be 6.3×10^-3 for LaMnO₃ cathode material. From the dielectric constant ε′ as a function of frequency observed that value of ε′ maximum at lower frequencies and it begins to drop and becomes constant at higher frequencies.

Published in	American Journal of Nanosciences (Volume 5, Issue 4)
DOI	10.11648/j.ajn.20190504.14
Page(s)	48-55
Creative Commons	This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium or format, provided the original work is properly cited.
Copyright	Copyright © The Author(s), 2019. Published by Science Publishing Group

Keywords

Perovskites, SOFC, Cathode Materials

References

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Kassahun Lewetegn Damena. (2019). Investigation of Thermal, Structural and Electrical Properties of LaMnO3-Sigma. American Journal of Nanosciences, 5(4), 48-55. https://doi.org/10.11648/j.ajn.20190504.14

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Kassahun Lewetegn Damena. Investigation of Thermal, Structural and Electrical Properties of LaMnO3-Sigma. Am. J. Nanosci. 2019, 5(4), 48-55. doi: 10.11648/j.ajn.20190504.14

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AMA Style

Kassahun Lewetegn Damena. Investigation of Thermal, Structural and Electrical Properties of LaMnO3-Sigma. Am J Nanosci. 2019;5(4):48-55. doi: 10.11648/j.ajn.20190504.14

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@article{10.11648/j.ajn.20190504.14,
  author = {Kassahun Lewetegn Damena},
  title = {Investigation of Thermal, Structural and Electrical Properties of LaMnO3-Sigma},
  journal = {American Journal of Nanosciences},
  volume = {5},
  number = {4},
  pages = {48-55},
  doi = {10.11648/j.ajn.20190504.14},
  url = {https://doi.org/10.11648/j.ajn.20190504.14},
  eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.ajn.20190504.14},
  abstract = {LaMnO3 is one of the most intensively studied cathode materials for solid oxide fuel cell (SOFC). In the present study, LaMnO3-d, cathode materials were synthesized by combustion method. The properties of synthesized materials like thermal, structural, electrical and electrochemical were investigated. Thermogravimetric analysis (TGA/DTA) analysis confirms that the calcination temperature (1000°C) is the appropriate temperature for the preparation of the materials using La (NO3)3.6H2O, MnSO4.H2O, Co (NO3)2.6H2O, Fe (NO3) 3.9H2O and C6H8O7.H2O precursors. The X-ray powder diffraction (XRD) results of the materials reveal the formation of the hexagonal structure with R3C space group Fd3m.The scanning electron microscope (SEM) characterization shows that the prepared samples have slightly porous structure with agglomerated particles. The energy dispersive spectroscopy (EDS) analysis is also confirms the presence of La, Mn and O elements in all synthesized materials. From the fourier transform infrared spectroscopy (FTIR) analysis, the most significant absorption bands located at 1629.8cm1 and 589.9cm1 wave numbers are identified. The room temperature conductivity of the sample is found to be 6.3×10-3 for LaMnO3 cathode material. From the dielectric constant ε′ as a function of frequency observed that value of ε′ maximum at lower frequencies and it begins to drop and becomes constant at higher frequencies.},
 year = {2019}
}

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TY  - JOUR
T1  - Investigation of Thermal, Structural and Electrical Properties of LaMnO3-Sigma
AU  - Kassahun Lewetegn Damena
Y1  - 2019/11/26
PY  - 2019
N1  - https://doi.org/10.11648/j.ajn.20190504.14
DO  - 10.11648/j.ajn.20190504.14
T2  - American Journal of Nanosciences
JF  - American Journal of Nanosciences
JO  - American Journal of Nanosciences
SP  - 48
EP  - 55
PB  - Science Publishing Group
SN  - 2575-4858
UR  - https://doi.org/10.11648/j.ajn.20190504.14
AB  - LaMnO3 is one of the most intensively studied cathode materials for solid oxide fuel cell (SOFC). In the present study, LaMnO3-d, cathode materials were synthesized by combustion method. The properties of synthesized materials like thermal, structural, electrical and electrochemical were investigated. Thermogravimetric analysis (TGA/DTA) analysis confirms that the calcination temperature (1000°C) is the appropriate temperature for the preparation of the materials using La (NO3)3.6H2O, MnSO4.H2O, Co (NO3)2.6H2O, Fe (NO3) 3.9H2O and C6H8O7.H2O precursors. The X-ray powder diffraction (XRD) results of the materials reveal the formation of the hexagonal structure with R3C space group Fd3m.The scanning electron microscope (SEM) characterization shows that the prepared samples have slightly porous structure with agglomerated particles. The energy dispersive spectroscopy (EDS) analysis is also confirms the presence of La, Mn and O elements in all synthesized materials. From the fourier transform infrared spectroscopy (FTIR) analysis, the most significant absorption bands located at 1629.8cm1 and 589.9cm1 wave numbers are identified. The room temperature conductivity of the sample is found to be 6.3×10-3 for LaMnO3 cathode material. From the dielectric constant ε′ as a function of frequency observed that value of ε′ maximum at lower frequencies and it begins to drop and becomes constant at higher frequencies.
VL  - 5
IS  - 4
ER  -

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Author Information

Kassahun Lewetegn Damena

Physics, Arba Minch University, ArbaMinch, Ethiopia

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APA Style

Kassahun Lewetegn Damena. (2019). Investigation of Thermal, Structural and Electrical Properties of LaMnO3-Sigma. American Journal of Nanosciences, 5(4), 48-55. https://doi.org/10.11648/j.ajn.20190504.14

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ACS Style

Kassahun Lewetegn Damena. Investigation of Thermal, Structural and Electrical Properties of LaMnO3-Sigma. Am. J. Nanosci. 2019, 5(4), 48-55. doi: 10.11648/j.ajn.20190504.14

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AMA Style

Kassahun Lewetegn Damena. Investigation of Thermal, Structural and Electrical Properties of LaMnO3-Sigma. Am J Nanosci. 2019;5(4):48-55. doi: 10.11648/j.ajn.20190504.14

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@article{10.11648/j.ajn.20190504.14,
  author = {Kassahun Lewetegn Damena},
  title = {Investigation of Thermal, Structural and Electrical Properties of LaMnO3-Sigma},
  journal = {American Journal of Nanosciences},
  volume = {5},
  number = {4},
  pages = {48-55},
  doi = {10.11648/j.ajn.20190504.14},
  url = {https://doi.org/10.11648/j.ajn.20190504.14},
  eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.ajn.20190504.14},
  abstract = {LaMnO3 is one of the most intensively studied cathode materials for solid oxide fuel cell (SOFC). In the present study, LaMnO3-d, cathode materials were synthesized by combustion method. The properties of synthesized materials like thermal, structural, electrical and electrochemical were investigated. Thermogravimetric analysis (TGA/DTA) analysis confirms that the calcination temperature (1000°C) is the appropriate temperature for the preparation of the materials using La (NO3)3.6H2O, MnSO4.H2O, Co (NO3)2.6H2O, Fe (NO3) 3.9H2O and C6H8O7.H2O precursors. The X-ray powder diffraction (XRD) results of the materials reveal the formation of the hexagonal structure with R3C space group Fd3m.The scanning electron microscope (SEM) characterization shows that the prepared samples have slightly porous structure with agglomerated particles. The energy dispersive spectroscopy (EDS) analysis is also confirms the presence of La, Mn and O elements in all synthesized materials. From the fourier transform infrared spectroscopy (FTIR) analysis, the most significant absorption bands located at 1629.8cm1 and 589.9cm1 wave numbers are identified. The room temperature conductivity of the sample is found to be 6.3×10-3 for LaMnO3 cathode material. From the dielectric constant ε′ as a function of frequency observed that value of ε′ maximum at lower frequencies and it begins to drop and becomes constant at higher frequencies.},
 year = {2019}
}

Copy | Download

TY  - JOUR
T1  - Investigation of Thermal, Structural and Electrical Properties of LaMnO3-Sigma
AU  - Kassahun Lewetegn Damena
Y1  - 2019/11/26
PY  - 2019
N1  - https://doi.org/10.11648/j.ajn.20190504.14
DO  - 10.11648/j.ajn.20190504.14
T2  - American Journal of Nanosciences
JF  - American Journal of Nanosciences
JO  - American Journal of Nanosciences
SP  - 48
EP  - 55
PB  - Science Publishing Group
SN  - 2575-4858
UR  - https://doi.org/10.11648/j.ajn.20190504.14
AB  - LaMnO3 is one of the most intensively studied cathode materials for solid oxide fuel cell (SOFC). In the present study, LaMnO3-d, cathode materials were synthesized by combustion method. The properties of synthesized materials like thermal, structural, electrical and electrochemical were investigated. Thermogravimetric analysis (TGA/DTA) analysis confirms that the calcination temperature (1000°C) is the appropriate temperature for the preparation of the materials using La (NO3)3.6H2O, MnSO4.H2O, Co (NO3)2.6H2O, Fe (NO3) 3.9H2O and C6H8O7.H2O precursors. The X-ray powder diffraction (XRD) results of the materials reveal the formation of the hexagonal structure with R3C space group Fd3m.The scanning electron microscope (SEM) characterization shows that the prepared samples have slightly porous structure with agglomerated particles. The energy dispersive spectroscopy (EDS) analysis is also confirms the presence of La, Mn and O elements in all synthesized materials. From the fourier transform infrared spectroscopy (FTIR) analysis, the most significant absorption bands located at 1629.8cm1 and 589.9cm1 wave numbers are identified. The room temperature conductivity of the sample is found to be 6.3×10-3 for LaMnO3 cathode material. From the dielectric constant ε′ as a function of frequency observed that value of ε′ maximum at lower frequencies and it begins to drop and becomes constant at higher frequencies.
VL  - 5
IS  - 4
ER  -

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