TY  - CONF
AU  - Gezović, Aleksandra
AU  - Milović, Miloš
AU  - Bajuk-Bogdanović, Danica
AU  - Grudić, Veselinka
AU  - Mentus, Slavko
AU  - Vujković, Milica
PY  - 2022
UR  - https://dais.sanu.ac.rs/123456789/13594
AB  - The combination of different structural units in the anionic sublattice (PO4–SO4, PO4–NO3, PO4–CO3, etc.) can provide novel mixed polyanionic structures, which matched properties of Li-ion intercalation materials [1]. Mixed polyanion, Na4Fe3(PO4)2P2O7 (NFPP) is of special interest as a cathode for Na-ion batteries [2]. In this study, the simple citric-assisted sol-gel method was used for NFPP/C preparation, with the aim of evaluating its sodium storage capability. When both phosphates and pyrophosphates are used as precursors, the mixed NFPP phase has been successfully obtained, but only if pH is adjusted to the neutral value. Otherwise, when it comes to spontaneous sol-gel reaction (without pH adjustment), the heterostructure Na4Fe3(PO4)2P2O7/Na2FeP2O7 was formed. The obtained polyanions have been examined in terms of the structural, thermal and morphological behaviour by XRD, FTIR, TG/DTA and FESEM. Their electrochemical examination in NaNO3, by cyclic voltammetry and chronopotentiometry, reveals the substantial difference in sodium storage properties of synthesized nanocomposites. While the heterestrocture delivers the specific capacity of around 90 mAh g-1 with a poor rate capability, the mixed phase can rich theoretical capacity of ≈129 mAh g-1 (at a common scan rate), with a high rate capability of ≈80 C.
PB  - Belgrade : Materials Research Society of Serbia
C3  - Program and The Book of abstracts / Twenty-third Annual Conference YUCOMAT 2022 & Twelfth World Round Table Conference on Sintering XII WRTCS 2022, Herceg Novi, Montenegro, August 29 - September 2, 2022
T1  - pH-triggered sol-gel synthesis of Na4Fe3(PO4)2P2O7 cathode material
SP  - 80
EP  - 80
UR  - https://hdl.handle.net/21.15107/rcub_dais_13594
ER  - 

@conference{
author = "Gezović, Aleksandra and Milović, Miloš and Bajuk-Bogdanović, Danica and Grudić, Veselinka and Mentus, Slavko and Vujković, Milica",
year = "2022",
abstract = "The combination of different structural units in the anionic sublattice (PO4–SO4, PO4–NO3, PO4–CO3, etc.) can provide novel mixed polyanionic structures, which matched properties of Li-ion intercalation materials [1]. Mixed polyanion, Na4Fe3(PO4)2P2O7 (NFPP) is of special interest as a cathode for Na-ion batteries [2]. In this study, the simple citric-assisted sol-gel method was used for NFPP/C preparation, with the aim of evaluating its sodium storage capability. When both phosphates and pyrophosphates are used as precursors, the mixed NFPP phase has been successfully obtained, but only if pH is adjusted to the neutral value. Otherwise, when it comes to spontaneous sol-gel reaction (without pH adjustment), the heterostructure Na4Fe3(PO4)2P2O7/Na2FeP2O7 was formed. The obtained polyanions have been examined in terms of the structural, thermal and morphological behaviour by XRD, FTIR, TG/DTA and FESEM. Their electrochemical examination in NaNO3, by cyclic voltammetry and chronopotentiometry, reveals the substantial difference in sodium storage properties of synthesized nanocomposites. While the heterestrocture delivers the specific capacity of around 90 mAh g-1 with a poor rate capability, the mixed phase can rich theoretical capacity of ≈129 mAh g-1 (at a common scan rate), with a high rate capability of ≈80 C.",
publisher = "Belgrade : Materials Research Society of Serbia",
journal = "Program and The Book of abstracts / Twenty-third Annual Conference YUCOMAT 2022 & Twelfth World Round Table Conference on Sintering XII WRTCS 2022, Herceg Novi, Montenegro, August 29 - September 2, 2022",
title = "pH-triggered sol-gel synthesis of Na4Fe3(PO4)2P2O7 cathode material",
pages = "80-80",
url = "https://hdl.handle.net/21.15107/rcub_dais_13594"
}

Gezović, A., Milović, M., Bajuk-Bogdanović, D., Grudić, V., Mentus, S.,& Vujković, M.. (2022). pH-triggered sol-gel synthesis of Na4Fe3(PO4)2P2O7 cathode material. in Program and The Book of abstracts / Twenty-third Annual Conference YUCOMAT 2022 & Twelfth World Round Table Conference on Sintering XII WRTCS 2022, Herceg Novi, Montenegro, August 29 - September 2, 2022
Belgrade : Materials Research Society of Serbia., 80-80.
https://hdl.handle.net/21.15107/rcub_dais_13594

Gezović A, Milović M, Bajuk-Bogdanović D, Grudić V, Mentus S, Vujković M. pH-triggered sol-gel synthesis of Na4Fe3(PO4)2P2O7 cathode material. in Program and The Book of abstracts / Twenty-third Annual Conference YUCOMAT 2022 & Twelfth World Round Table Conference on Sintering XII WRTCS 2022, Herceg Novi, Montenegro, August 29 - September 2, 2022. 2022;:80-80.
https://hdl.handle.net/21.15107/rcub_dais_13594 .

Gezović, Aleksandra, Milović, Miloš, Bajuk-Bogdanović, Danica, Grudić, Veselinka, Mentus, Slavko, Vujković, Milica, "pH-triggered sol-gel synthesis of Na4Fe3(PO4)2P2O7 cathode material" in Program and The Book of abstracts / Twenty-third Annual Conference YUCOMAT 2022 & Twelfth World Round Table Conference on Sintering XII WRTCS 2022, Herceg Novi, Montenegro, August 29 - September 2, 2022 (2022):80-80,
https://hdl.handle.net/21.15107/rcub_dais_13594 .