TY  - CONF
AU  - Latas, Nemanja
AU  - Cvjetićanin, Nikola
AU  - Rajić, Vladimir
PY  - 2022
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/12381
AB  - High demand for efficient storage devices has set a goal of improving the efficiency of lithium-ion batteries (LIBs), which currently represent the most promising energy storage devices . Most of the commercial LIBs today are composed of graphitic-based anodes, which are not suitable for high performance applications, such as electric vehicles. In this context, there is an increased interest in the development of novel anode materials, with enhanced kinetics. Such an electrode with enhanced capabilities could be TiO2 nanotube arrays (NTAs). In this paper, anatase TiO2 NTAs were prepared by anodization of a Ti foil in the solution of NH4F in glycerol at the voltage of 45 V and subsequent annealing at 400oC. The presence of anatase TiO2 was confirmed by Raman spectroscopy and the morphology was observed by scanning electron microscopy (SEM), while the electrochemical insertion of Liion in nanotubes was studied by means of cyclic voltammetry (CV) and galvanostatic (GS) charge-discharge experiments by exposing the electrode to the 1M solution of LiClO4 in propylene carbonate. The CV response was fast at all scan rates, up to 50 mV·s-1 , with characteristic Ti4+/Ti3+ redox peaks. The Ti/TiO2 NTAs electrode was GC cycled at different current densities (in orders 100, 50, 25 and again 100 µA·cm-2 ) at room temperature. After the initial 50 cycles the insertion/extraction capacity amounted 191.1/170.1 mAh·g-1 . By decreasing the current density, capacity significantly rises to 268.4/243.3 and 347.8/312.3 mAh·g-1 at 50 and 25 µA·cm-2 , respectively. After the last cycle at 100 µA·cm-2 , capacity amounts 188.9/168.1 mAh·g-1 , which is about 99% of the initial capacity. The diffusion coefficient of Li-ion was calculated to be 7.06·10-16 cm2 ·s-1 during deintercalation and 8.16·10-16 cm2 ·s-1 during intercalation.
PB  - Belgrade : Institute of Technical Sciences of SASA
C3  - 20th Young Researchers' Conference Materials Sciences and Engineering : program and the book of abstracts
T1  - Lithium-ion insertion into anatase TiO2 nanotube arrays at room temperature
SP  - 34
EP  - 34
UR  - https://hdl.handle.net/21.15107/rcub_vinar_12381
ER  - 

@conference{
author = "Latas, Nemanja and Cvjetićanin, Nikola and Rajić, Vladimir",
year = "2022",
abstract = "High demand for efficient storage devices has set a goal of improving the efficiency of lithium-ion batteries (LIBs), which currently represent the most promising energy storage devices . Most of the commercial LIBs today are composed of graphitic-based anodes, which are not suitable for high performance applications, such as electric vehicles. In this context, there is an increased interest in the development of novel anode materials, with enhanced kinetics. Such an electrode with enhanced capabilities could be TiO2 nanotube arrays (NTAs). In this paper, anatase TiO2 NTAs were prepared by anodization of a Ti foil in the solution of NH4F in glycerol at the voltage of 45 V and subsequent annealing at 400oC. The presence of anatase TiO2 was confirmed by Raman spectroscopy and the morphology was observed by scanning electron microscopy (SEM), while the electrochemical insertion of Liion in nanotubes was studied by means of cyclic voltammetry (CV) and galvanostatic (GS) charge-discharge experiments by exposing the electrode to the 1M solution of LiClO4 in propylene carbonate. The CV response was fast at all scan rates, up to 50 mV·s-1 , with characteristic Ti4+/Ti3+ redox peaks. The Ti/TiO2 NTAs electrode was GC cycled at different current densities (in orders 100, 50, 25 and again 100 µA·cm-2 ) at room temperature. After the initial 50 cycles the insertion/extraction capacity amounted 191.1/170.1 mAh·g-1 . By decreasing the current density, capacity significantly rises to 268.4/243.3 and 347.8/312.3 mAh·g-1 at 50 and 25 µA·cm-2 , respectively. After the last cycle at 100 µA·cm-2 , capacity amounts 188.9/168.1 mAh·g-1 , which is about 99% of the initial capacity. The diffusion coefficient of Li-ion was calculated to be 7.06·10-16 cm2 ·s-1 during deintercalation and 8.16·10-16 cm2 ·s-1 during intercalation.",
publisher = "Belgrade : Institute of Technical Sciences of SASA",
journal = "20th Young Researchers' Conference Materials Sciences and Engineering : program and the book of abstracts",
title = "Lithium-ion insertion into anatase TiO2 nanotube arrays at room temperature",
pages = "34-34",
url = "https://hdl.handle.net/21.15107/rcub_vinar_12381"
}

Latas, N., Cvjetićanin, N.,& Rajić, V.. (2022). Lithium-ion insertion into anatase TiO2 nanotube arrays at room temperature. in 20th Young Researchers' Conference Materials Sciences and Engineering : program and the book of abstracts
Belgrade : Institute of Technical Sciences of SASA., 34-34.
https://hdl.handle.net/21.15107/rcub_vinar_12381

Latas N, Cvjetićanin N, Rajić V. Lithium-ion insertion into anatase TiO2 nanotube arrays at room temperature. in 20th Young Researchers' Conference Materials Sciences and Engineering : program and the book of abstracts. 2022;:34-34.
https://hdl.handle.net/21.15107/rcub_vinar_12381 .

Latas, Nemanja, Cvjetićanin, Nikola, Rajić, Vladimir, "Lithium-ion insertion into anatase TiO2 nanotube arrays at room temperature" in 20th Young Researchers' Conference Materials Sciences and Engineering : program and the book of abstracts (2022):34-34,
https://hdl.handle.net/21.15107/rcub_vinar_12381 .

TY  - CONF
AU  - Jugović, Dragana
AU  - Mitrić, Miodrag
AU  - Cvjetićanin, Nikola
AU  - Mentus, Slavko
AU  - Uskoković, Dragan
PY  - 2007
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/11971
AB  - Litijum gvožđe fosfat olivinske strukture se poslednjih godina intenzivno ispituje kao potencijalni katodni materijal za litijum jonske baterije. Osnovni nedostatak LiFePO4 je njegova praktično izolatorska priroda, to jest mala elektronska i jonska provodljivost. Postoji više načina za prevazilaženje ovog problema, a jedan od njih je prevlačenje čestica olivina provodnim ugljenikom. Prahovi LiFePO4 su sintetisani sonohemijskim tretmanom odgovarajućih prekursora i naknadnim kratkim termičkim tretmanom. Sinteza je praćena rendgenskom difrakcijom na dobijenim prahovima. Pošto je utvrđeno da su dobijeni monofazni uzorci izvršena su detaljna rendgeno difrakciona merenja u oblasti 2θ od 14º do 120º. Pomoću dobijenih podataka Rietveldovom punoprofilnom metodom izvršeno je utačnjavanje struktura u prostornoj grupi Pnma, a u strukturnom tipu olivina. Morfologija prahova je ispitivana skenirajućom i transmisionom elektronskom mikroskopijom. Pokazano je da su dobijeni prahovi olivina delimično prevučeni slojem ugljenika. Elektrohemijske osobine prahova su ispitane galvanostatskim punjenjem i pražnjenjem.
PB  - Beograd : Institut tehničkih nauka SANU
C3  - Šesta konferencija mladih istraživača Nauka i inženjerstvo novih materijala : Program i knjiga apstrakata; Decembar 24–26, Beograd
T1  - Struktura i elektrohemijske osobine kompozitnog LiFePO4 /C praha dobijenog sonohemijskim tretmanom
SP  - 22
EP  - 22
UR  - https://hdl.handle.net/21.15107/rcub_vinar_11971
ER  - 

@conference{
author = "Jugović, Dragana and Mitrić, Miodrag and Cvjetićanin, Nikola and Mentus, Slavko and Uskoković, Dragan",
year = "2007",
abstract = "Litijum gvožđe fosfat olivinske strukture se poslednjih godina intenzivno ispituje kao potencijalni katodni materijal za litijum jonske baterije. Osnovni nedostatak LiFePO4 je njegova praktično izolatorska priroda, to jest mala elektronska i jonska provodljivost. Postoji više načina za prevazilaženje ovog problema, a jedan od njih je prevlačenje čestica olivina provodnim ugljenikom. Prahovi LiFePO4 su sintetisani sonohemijskim tretmanom odgovarajućih prekursora i naknadnim kratkim termičkim tretmanom. Sinteza je praćena rendgenskom difrakcijom na dobijenim prahovima. Pošto je utvrđeno da su dobijeni monofazni uzorci izvršena su detaljna rendgeno difrakciona merenja u oblasti 2θ od 14º do 120º. Pomoću dobijenih podataka Rietveldovom punoprofilnom metodom izvršeno je utačnjavanje struktura u prostornoj grupi Pnma, a u strukturnom tipu olivina. Morfologija prahova je ispitivana skenirajućom i transmisionom elektronskom mikroskopijom. Pokazano je da su dobijeni prahovi olivina delimično prevučeni slojem ugljenika. Elektrohemijske osobine prahova su ispitane galvanostatskim punjenjem i pražnjenjem.",
publisher = "Beograd : Institut tehničkih nauka SANU",
journal = "Šesta konferencija mladih istraživača Nauka i inženjerstvo novih materijala : Program i knjiga apstrakata; Decembar 24–26, Beograd",
title = "Struktura i elektrohemijske osobine kompozitnog LiFePO4 /C praha dobijenog sonohemijskim tretmanom",
pages = "22-22",
url = "https://hdl.handle.net/21.15107/rcub_vinar_11971"
}

Jugović, D., Mitrić, M., Cvjetićanin, N., Mentus, S.,& Uskoković, D.. (2007). Struktura i elektrohemijske osobine kompozitnog LiFePO4 /C praha dobijenog sonohemijskim tretmanom. in Šesta konferencija mladih istraživača Nauka i inženjerstvo novih materijala : Program i knjiga apstrakata; Decembar 24–26, Beograd
Beograd : Institut tehničkih nauka SANU., 22-22.
https://hdl.handle.net/21.15107/rcub_vinar_11971

Jugović D, Mitrić M, Cvjetićanin N, Mentus S, Uskoković D. Struktura i elektrohemijske osobine kompozitnog LiFePO4 /C praha dobijenog sonohemijskim tretmanom. in Šesta konferencija mladih istraživača Nauka i inženjerstvo novih materijala : Program i knjiga apstrakata; Decembar 24–26, Beograd. 2007;:22-22.
https://hdl.handle.net/21.15107/rcub_vinar_11971 .

Jugović, Dragana, Mitrić, Miodrag, Cvjetićanin, Nikola, Mentus, Slavko, Uskoković, Dragan, "Struktura i elektrohemijske osobine kompozitnog LiFePO4 /C praha dobijenog sonohemijskim tretmanom" in Šesta konferencija mladih istraživača Nauka i inženjerstvo novih materijala : Program i knjiga apstrakata; Decembar 24–26, Beograd (2007):22-22,
https://hdl.handle.net/21.15107/rcub_vinar_11971 .