Geopolymer/CeO2 as Solid Electrolyte for IT-SOFC
Аутори
Gulicovski, Jelena J.Nenadović, Snežana S.
Kljajević, Ljiljana M.
Mirković, Miljana M.
Nišavić, Marija
Kragović, Milan M.
Stojmenović, Marija
Чланак у часопису (Објављена верзија)
Метаподаци
Приказ свих података о документуАпстракт
As a material for application in the life sciences, a new composite material, geopolymer/CeO2 (GP_CeO2), was synthesized as a potential low-cost solid electrolyte for application in solid oxide fuel cells operating in intermediate temperature (IT-SOFC). The new materials were obtained from alkali-activated metakaolin (calcined clay) in the presence of CeO2 powders (x = 10%). Besides the commercial CeO2 powder, as a source of ceria, two differently synthesized CeO2 powders also were used: CeO2 synthesized by modified glycine nitrate procedure (MGNP) and self-propagating reaction at room temperature (SPRT). The structural, morphological, and electrical properties of pure and GP_CeO2-type samples were investigated by X-ray powder diffraction (XRPD), Fourier transform infrared (FTIR), BET, differential thermal and thermogravimetric analysis (DTA/TGA), scanning electron microscopy (FE-SEM), energy dispersive spectrometer (EDS), and method complex impedance (EIS). XRPD and matrix-assisted la...ser desorption and ionization time-of-flight (MALDI-TOF) analysis confirmed the formation of solid phase CeO2. The BET, DTA/TGA, FE-SEM, and EDS results indicated that particles of CeO2 were stabile interconnected and form a continuous conductive path, which was confirmed by the EIS method. The highest conductivity of 1.86 × 10−2 Ω−1 cm−1 was obtained for the sample GP_CeO2_MGNP at 700 °C. The corresponding value of activation energy for conductivity was 0.26 eV in the temperature range 500–700 °C.
Кључне речи:
Electrical conductivity / Fuel cells / Geopolymers/ceria / Polymer compositesИзвор:
Polymers, 2020, 12, 1, 248-Финансирање / пројекти:
DOI: 10.3390/polym12010248
ISSN: 2073-4360
WoS: 000519848300247
Scopus: 2-s2.0-85078409127
Колекције
Институција/група
VinčaTY - JOUR AU - Gulicovski, Jelena J. AU - Nenadović, Snežana S. AU - Kljajević, Ljiljana M. AU - Mirković, Miljana M. AU - Nišavić, Marija AU - Kragović, Milan M. AU - Stojmenović, Marija PY - 2020 UR - https://vinar.vin.bg.ac.rs/handle/123456789/8480 AB - As a material for application in the life sciences, a new composite material, geopolymer/CeO2 (GP_CeO2), was synthesized as a potential low-cost solid electrolyte for application in solid oxide fuel cells operating in intermediate temperature (IT-SOFC). The new materials were obtained from alkali-activated metakaolin (calcined clay) in the presence of CeO2 powders (x = 10%). Besides the commercial CeO2 powder, as a source of ceria, two differently synthesized CeO2 powders also were used: CeO2 synthesized by modified glycine nitrate procedure (MGNP) and self-propagating reaction at room temperature (SPRT). The structural, morphological, and electrical properties of pure and GP_CeO2-type samples were investigated by X-ray powder diffraction (XRPD), Fourier transform infrared (FTIR), BET, differential thermal and thermogravimetric analysis (DTA/TGA), scanning electron microscopy (FE-SEM), energy dispersive spectrometer (EDS), and method complex impedance (EIS). XRPD and matrix-assisted laser desorption and ionization time-of-flight (MALDI-TOF) analysis confirmed the formation of solid phase CeO2. The BET, DTA/TGA, FE-SEM, and EDS results indicated that particles of CeO2 were stabile interconnected and form a continuous conductive path, which was confirmed by the EIS method. The highest conductivity of 1.86 × 10−2 Ω−1 cm−1 was obtained for the sample GP_CeO2_MGNP at 700 °C. The corresponding value of activation energy for conductivity was 0.26 eV in the temperature range 500–700 °C. T2 - Polymers T1 - Geopolymer/CeO2 as Solid Electrolyte for IT-SOFC VL - 12 IS - 1 SP - 248 DO - 10.3390/polym12010248 ER -
@article{ author = "Gulicovski, Jelena J. and Nenadović, Snežana S. and Kljajević, Ljiljana M. and Mirković, Miljana M. and Nišavić, Marija and Kragović, Milan M. and Stojmenović, Marija", year = "2020", abstract = "As a material for application in the life sciences, a new composite material, geopolymer/CeO2 (GP_CeO2), was synthesized as a potential low-cost solid electrolyte for application in solid oxide fuel cells operating in intermediate temperature (IT-SOFC). The new materials were obtained from alkali-activated metakaolin (calcined clay) in the presence of CeO2 powders (x = 10%). Besides the commercial CeO2 powder, as a source of ceria, two differently synthesized CeO2 powders also were used: CeO2 synthesized by modified glycine nitrate procedure (MGNP) and self-propagating reaction at room temperature (SPRT). The structural, morphological, and electrical properties of pure and GP_CeO2-type samples were investigated by X-ray powder diffraction (XRPD), Fourier transform infrared (FTIR), BET, differential thermal and thermogravimetric analysis (DTA/TGA), scanning electron microscopy (FE-SEM), energy dispersive spectrometer (EDS), and method complex impedance (EIS). XRPD and matrix-assisted laser desorption and ionization time-of-flight (MALDI-TOF) analysis confirmed the formation of solid phase CeO2. The BET, DTA/TGA, FE-SEM, and EDS results indicated that particles of CeO2 were stabile interconnected and form a continuous conductive path, which was confirmed by the EIS method. The highest conductivity of 1.86 × 10−2 Ω−1 cm−1 was obtained for the sample GP_CeO2_MGNP at 700 °C. The corresponding value of activation energy for conductivity was 0.26 eV in the temperature range 500–700 °C.", journal = "Polymers", title = "Geopolymer/CeO2 as Solid Electrolyte for IT-SOFC", volume = "12", number = "1", pages = "248", doi = "10.3390/polym12010248" }
Gulicovski, J. J., Nenadović, S. S., Kljajević, L. M., Mirković, M. M., Nišavić, M., Kragović, M. M.,& Stojmenović, M.. (2020). Geopolymer/CeO2 as Solid Electrolyte for IT-SOFC. in Polymers, 12(1), 248. https://doi.org/10.3390/polym12010248
Gulicovski JJ, Nenadović SS, Kljajević LM, Mirković MM, Nišavić M, Kragović MM, Stojmenović M. Geopolymer/CeO2 as Solid Electrolyte for IT-SOFC. in Polymers. 2020;12(1):248. doi:10.3390/polym12010248 .
Gulicovski, Jelena J., Nenadović, Snežana S., Kljajević, Ljiljana M., Mirković, Miljana M., Nišavić, Marija, Kragović, Milan M., Stojmenović, Marija, "Geopolymer/CeO2 as Solid Electrolyte for IT-SOFC" in Polymers, 12, no. 1 (2020):248, https://doi.org/10.3390/polym12010248 . .