Insertion of lithium ion in anatase TiO2 nanotube arrays of different morphology
Само за регистроване кориснике
2017
Чланак у часопису (Објављена верзија)
Метаподаци
Приказ свих података о документуАпстракт
Anatase TiO2 nanotube arrays of different morphology were prepared by a two-step process: anodic oxidation at voltages 20–60 V and subsequent annealing at 400 °C. By amplifying anodization voltage the inner diameter of nanotubes increased. At 60 V nanotubes changed the shape from cylindrical tube to truncated cone with elliptical opening. Electrochemical insertion of Li-ion in nanotubes was studied by cyclic voltammetry and galvanostatic charge-discharge experiments. The cyclovoltammetric response was fast for all nanotube arrays. The galvanostatic areal charge/discharge capacity of nanotube arrays increased with increasing anodizaton voltage. Although the mass of nanotubes prepared at 45 V was larger, the gravimetrical capacity was much higher for nanotubes prepared at 60 V because of the larger surface area exposed to the electrolyte. Gravimetrical capacity values exceed theoretical bulk capacity of anatase due to the surface storage of Li-ion. Diffusion coefficient of Li-ion was cal...culated to be between 5.9·10−16 and 5.9·10−15 cm2 s−1.
Кључне речи:
nanostructured materials / electrode materials / electrochemical reactions / diffusion / SEMИзвор:
Journal of Alloys and Compounds, 2017, 712, 90-96Издавач:
- Elsevier
Финансирање / пројекти:
- Магнетни и радионуклидима обележени наноструктурни материјали за примене у медицини (RS-MESTD-Integrated and Interdisciplinary Research (IIR or III)-45015)
- Молекуларно дизајнирање наночестица контролисаних морфолошких и физичко-хемијских карактеристика и функционалних материјала на њиховој основи (RS-MESTD-Integrated and Interdisciplinary Research (IIR or III)-45004)
Напомена:
- Peer-reviewed manuscript: https://hdl.handle.net/21.15107/rcub_dais_4567
- Supporting information: https://hdl.handle.net/21.15107/rcub_dais_5979
Повезане информације:
- Друга верзија
https://hdl.handle.net/21.15107/rcub_dais_4567 - Повезани садржај
https://hdl.handle.net/21.15107/rcub_dais_5979
DOI: 10.1016/j.jallcom.2017.04.065
ISSN: 0925-8388
WoS: 000401881000013
Scopus: 2-s2.0-85017354852
Институција/група
Институт техничких наука САНУ / Institute of Technical Sciences of SASATY - JOUR AU - Bratić, Milan AU - Jugović, Dragana AU - Mitrić, Miodrag AU - Cvjetićanin, Nikola PY - 2017 UR - https://dais.sanu.ac.rs/123456789/2332 AB - Anatase TiO2 nanotube arrays of different morphology were prepared by a two-step process: anodic oxidation at voltages 20–60 V and subsequent annealing at 400 °C. By amplifying anodization voltage the inner diameter of nanotubes increased. At 60 V nanotubes changed the shape from cylindrical tube to truncated cone with elliptical opening. Electrochemical insertion of Li-ion in nanotubes was studied by cyclic voltammetry and galvanostatic charge-discharge experiments. The cyclovoltammetric response was fast for all nanotube arrays. The galvanostatic areal charge/discharge capacity of nanotube arrays increased with increasing anodizaton voltage. Although the mass of nanotubes prepared at 45 V was larger, the gravimetrical capacity was much higher for nanotubes prepared at 60 V because of the larger surface area exposed to the electrolyte. Gravimetrical capacity values exceed theoretical bulk capacity of anatase due to the surface storage of Li-ion. Diffusion coefficient of Li-ion was calculated to be between 5.9·10−16 and 5.9·10−15 cm2 s−1. PB - Elsevier T2 - Journal of Alloys and Compounds T1 - Insertion of lithium ion in anatase TiO2 nanotube arrays of different morphology SP - 90 EP - 96 VL - 712 DO - 10.1016/j.jallcom.2017.04.065 UR - https://hdl.handle.net/21.15107/rcub_dais_2332 ER -
@article{ author = "Bratić, Milan and Jugović, Dragana and Mitrić, Miodrag and Cvjetićanin, Nikola", year = "2017", abstract = "Anatase TiO2 nanotube arrays of different morphology were prepared by a two-step process: anodic oxidation at voltages 20–60 V and subsequent annealing at 400 °C. By amplifying anodization voltage the inner diameter of nanotubes increased. At 60 V nanotubes changed the shape from cylindrical tube to truncated cone with elliptical opening. Electrochemical insertion of Li-ion in nanotubes was studied by cyclic voltammetry and galvanostatic charge-discharge experiments. The cyclovoltammetric response was fast for all nanotube arrays. The galvanostatic areal charge/discharge capacity of nanotube arrays increased with increasing anodizaton voltage. Although the mass of nanotubes prepared at 45 V was larger, the gravimetrical capacity was much higher for nanotubes prepared at 60 V because of the larger surface area exposed to the electrolyte. Gravimetrical capacity values exceed theoretical bulk capacity of anatase due to the surface storage of Li-ion. Diffusion coefficient of Li-ion was calculated to be between 5.9·10−16 and 5.9·10−15 cm2 s−1.", publisher = "Elsevier", journal = "Journal of Alloys and Compounds", title = "Insertion of lithium ion in anatase TiO2 nanotube arrays of different morphology", pages = "90-96", volume = "712", doi = "10.1016/j.jallcom.2017.04.065", url = "https://hdl.handle.net/21.15107/rcub_dais_2332" }
Bratić, M., Jugović, D., Mitrić, M.,& Cvjetićanin, N.. (2017). Insertion of lithium ion in anatase TiO2 nanotube arrays of different morphology. in Journal of Alloys and Compounds Elsevier., 712, 90-96. https://doi.org/10.1016/j.jallcom.2017.04.065 https://hdl.handle.net/21.15107/rcub_dais_2332
Bratić M, Jugović D, Mitrić M, Cvjetićanin N. Insertion of lithium ion in anatase TiO2 nanotube arrays of different morphology. in Journal of Alloys and Compounds. 2017;712:90-96. doi:10.1016/j.jallcom.2017.04.065 https://hdl.handle.net/21.15107/rcub_dais_2332 .
Bratić, Milan, Jugović, Dragana, Mitrić, Miodrag, Cvjetićanin, Nikola, "Insertion of lithium ion in anatase TiO2 nanotube arrays of different morphology" in Journal of Alloys and Compounds, 712 (2017):90-96, https://doi.org/10.1016/j.jallcom.2017.04.065 ., https://hdl.handle.net/21.15107/rcub_dais_2332 .