Insertion of lithium ion in anatase TiO2 nanotube arrays of different morphology
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2017
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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 degrees 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) cm(2) s(-1). (C) 2017 Elsevier B.V. All rights reserved.
Ključne reči:
Nanostructured materials / Electrode materials / Electrochemical reactions / Diffusion / SEM / X-ray diffractionIzvor:
Journal of Alloys and Compounds, 2017, 712, 90-96Finansiranje / projekti:
- Litijum-jon baterije i gorivne ćelije-istraživanje i razvoj (RS-MESTD-Integrated and Interdisciplinary Research (IIR or III)-45014)
- Magnetni i radionuklidima obeleženi nanostrukturni materijali za primene u medicini (RS-MESTD-Integrated and Interdisciplinary Research (IIR or III)-45015)
- Molekularno dizajniranje nanočestica kontrolisanih morfoloških i fizičko-hemijskih karakteristika i funkcionalnih materijala na njihovoj osnovi (RS-MESTD-Integrated and Interdisciplinary Research (IIR or III)-45004)
DOI: 10.1016/j.jallcom.2017.04.065
ISSN: 0925-8388; 1873-4669
WoS: 000401881000013
Scopus: 2-s2.0-85017354852
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VinčaTY - JOUR AU - Bratić, Milan AU - Jugović, Dragana AU - Mitrić, Miodrag AU - Cvjetićanin, Nikola PY - 2017 UR - https://vinar.vin.bg.ac.rs/handle/123456789/1585 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 degrees 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) cm(2) s(-1). (C) 2017 Elsevier B.V. All rights reserved. T2 - Journal of Alloys and Compounds T1 - Insertion of lithium ion in anatase TiO2 nanotube arrays of different morphology VL - 712 SP - 90 EP - 96 DO - 10.1016/j.jallcom.2017.04.065 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 degrees 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) cm(2) s(-1). (C) 2017 Elsevier B.V. All rights reserved.", journal = "Journal of Alloys and Compounds", title = "Insertion of lithium ion in anatase TiO2 nanotube arrays of different morphology", volume = "712", pages = "90-96", doi = "10.1016/j.jallcom.2017.04.065" }
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, 712, 90-96. https://doi.org/10.1016/j.jallcom.2017.04.065
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 .
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 . .