TY  - JOUR
AU  - Latas, Nemanja
AU  - Cvjetićanin, Nikola
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/12380
AB  - Anatase TiO2 was prepared in the form of nanotube arrays by anodic oxidation of Ti foil followed by annealing at 400 °C. Electrochemical experiments, which included cyclic voltammetry (CV), galvanostatic (GS) cycling and electrochemical impedance spectroscopy (EIS) were conducted in 1 M solution of LiClO4 in propylene carbonate (PC) at temperatures 25 °C–55 °C. CV experiments, at scan rates 5–50 mV·s−1 , demonstrated with increasing temperature a large increase in the intensity of the redox peaks along with a decrease in the peak-to-peak separation. GS cycling showed large increase of capacity of thin-wall TiO2 nanotubes with increasing temperature, which attains 357 mAh·g−1 at 55 °C during lithiation at current rate 5.3 C, with capacity retention of 98.5% and Coulombic efficiency of 97.5%. Surface storage and development of secondary voltage plateau strongly contribute to such a large capacity value. EIS showed a multiple decrease in solid electrolyte interphase (SEI) layer resistance and charge transfer resistance with temperature rising up to 55 °C.
T2  - Journal of The Electrochemical Society
T1  - Large Li-Ion Insertion Capacity of Thin-Wall Anatase TiO                    2                    Nanotubes at 25 °C–55 °C
VL  - 170
IS  - 9
SP  - 090504
DO  - 10.1149/1945-7111/acf245
ER  - 

@article{
author = "Latas, Nemanja and Cvjetićanin, Nikola",
year = "2023",
abstract = "Anatase TiO2 was prepared in the form of nanotube arrays by anodic oxidation of Ti foil followed by annealing at 400 °C. Electrochemical experiments, which included cyclic voltammetry (CV), galvanostatic (GS) cycling and electrochemical impedance spectroscopy (EIS) were conducted in 1 M solution of LiClO4 in propylene carbonate (PC) at temperatures 25 °C–55 °C. CV experiments, at scan rates 5–50 mV·s−1 , demonstrated with increasing temperature a large increase in the intensity of the redox peaks along with a decrease in the peak-to-peak separation. GS cycling showed large increase of capacity of thin-wall TiO2 nanotubes with increasing temperature, which attains 357 mAh·g−1 at 55 °C during lithiation at current rate 5.3 C, with capacity retention of 98.5% and Coulombic efficiency of 97.5%. Surface storage and development of secondary voltage plateau strongly contribute to such a large capacity value. EIS showed a multiple decrease in solid electrolyte interphase (SEI) layer resistance and charge transfer resistance with temperature rising up to 55 °C.",
journal = "Journal of The Electrochemical Society",
title = "Large Li-Ion Insertion Capacity of Thin-Wall Anatase TiO                    2                    Nanotubes at 25 °C–55 °C",
volume = "170",
number = "9",
pages = "090504",
doi = "10.1149/1945-7111/acf245"
}

Latas, N.,& Cvjetićanin, N.. (2023). Large Li-Ion Insertion Capacity of Thin-Wall Anatase TiO                    2                    Nanotubes at 25 °C–55 °C. in Journal of The Electrochemical Society, 170(9), 090504.
https://doi.org/10.1149/1945-7111/acf245

Latas N, Cvjetićanin N. Large Li-Ion Insertion Capacity of Thin-Wall Anatase TiO                    2                    Nanotubes at 25 °C–55 °C. in Journal of The Electrochemical Society. 2023;170(9):090504.
doi:10.1149/1945-7111/acf245 .

Latas, Nemanja, Cvjetićanin, Nikola, "Large Li-Ion Insertion Capacity of Thin-Wall Anatase TiO                    2                    Nanotubes at 25 °C–55 °C" in Journal of The Electrochemical Society, 170, no. 9 (2023):090504,
https://doi.org/10.1149/1945-7111/acf245 . .

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 .