pH-triggered sol-gel synthesis of Na4Fe3(PO4)2P2O7 cathode material
Аутори
Gezović, AleksandraMilović, Miloš
Bajuk-Bogdanović, Danica
Grudić, Veselinka
Mentus, Slavko
Vujković, Milica
Конференцијски прилог (Објављена верзија)
Метаподаци
Приказ свих података о документуАпстракт
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 chronopotentiom...etry, 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.
Кључне речи:
sol-gel synthesis / cathode materials / NFPP/C / nanocompositesИзвор:
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, 80-80Издавач:
- Belgrade : Materials Research Society of Serbia
Финансирање / пројекти:
- Ministry of Science of Montenegro
- Министарство науке, технолошког развоја и иновација Републике Србије, институционално финансирање - 200146 (Универзитет у Београду, Факултет за физичку хемију) (RS-MESTD-inst-2020-200146)
Институција/група
Институт техничких наука САНУ / Institute of Technical Sciences of SASATY - 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 .