Large Li-Ion Insertion Capacity of Thin-Wall Anatase TiO 2 Nanotubes at 25 °C–55 °C
Apstrakt
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.
Izvor:
Journal of The Electrochemical Society, 2023, 170, 9, 090504-Finansiranje / projekti:
- Ministarstvo nauke, tehnološkog razvoja i inovacija Republike Srbije, institucionalno finansiranje - 200146 (Univerzitet u Beogradu, Fakultet za fizičku hemiju) (RS-MESTD-inst-2020-200146)
DOI: 10.1149/1945-7111/acf245
ISSN: 0013-4651
WoS: 001058178700001
Scopus: 2-s2.0-85171023468
Kolekcije
Institucija/grupa
VinčaTY - 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 . .