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Effect of Annealing on LiCoO 2 Thin Film Deposited by RF Magnetron Sputtering.

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Title: Effect of Annealing on LiCoO 2 Thin Film Deposited by RF Magnetron Sputtering.
Authors: Benzarti, Zohra1,2 (AUTHOR) zohra.benzarti@dem.uc.pt, Castro, José David1,2 (AUTHOR), Carneiro, Edgar3 (AUTHOR), Pacheco, Lara1,4 (AUTHOR), Duarte, Nelson4,5 (AUTHOR), Carvalho, Sandra1 (AUTHOR), Serra, Ricardo1 (AUTHOR), Cavaleiro, Albano1,2 (AUTHOR), Alves, Cristiana5 (AUTHOR), Cruz, Sandra1,4 (AUTHOR)
Source: Materials (1996-1944). Mar2025, Vol. 18 Issue 6, p1217. 19p.
Subjects: Substrates (Materials science), Radiofrequency sputtering, Magnetron sputtering, Sputter deposition, Thin films, Magnetrons
Abstract: This study investigates the properties of LiCoO2 coatings as cathodes for lithium-ion batteries, focusing on the effects of annealing on their structural, morphological, chemical, vibrational, and electrochemical characteristics. The LiCoO2 coatings were deposited on silicon and glass substrates using RF magnetron sputtering at 100 W and subsequently annealed at 600 °C for 1 h. The films were characterized before and after annealing using X-ray diffraction (XRD), scanning electron microscopy (SEM), energy-dispersive spectroscopy (EDS), X-ray photoelectron spectroscopy (XPS), Raman spectroscopy, and electrochemical impedance spectroscopy (EIS). Annealing improved the crystallinity of LiCoO2, which is critical for enhancing lithium-ion diffusion. Furthermore, an XPS analysis revealed a layered structure with a Li-rich outer layer and a Co-rich underlayer, indicating a more uniform distribution of Li and Co, along with increased oxygen content. Additionally, the annealing process refined the microstructure of the LiCoO2 coating, positively impacting its electrochemical performance. A comparative analysis of cyclic voltammetry (CV) and galvanostatic charge/discharge (GCD) results demonstrated a significant improvement in the charge/discharge capacity post-annealing. This study successfully highlights the beneficial effects of annealing on LiCoO2 thin-film cathodes, offering valuable insights for developing more efficient and sustainable lithium-ion batteries through sputter-deposition processes. [ABSTRACT FROM AUTHOR]
Copyright of Materials (1996-1944) is the property of MDPI and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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PubTypeId: academicJournal
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  Data: Effect of Annealing on LiCoO 2 Thin Film Deposited by RF Magnetron Sputtering.
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  Data: <searchLink fieldCode="AR" term="%22Benzarti%2C+Zohra%22">Benzarti, Zohra</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<i> zohra.benzarti@dem.uc.pt</i><br /><searchLink fieldCode="AR" term="%22Castro%2C+José+David%22">Castro, José David</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Carneiro%2C+Edgar%22">Carneiro, Edgar</searchLink><relatesTo>3</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Pacheco%2C+Lara%22">Pacheco, Lara</searchLink><relatesTo>1,4</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Duarte%2C+Nelson%22">Duarte, Nelson</searchLink><relatesTo>4,5</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Carvalho%2C+Sandra%22">Carvalho, Sandra</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Serra%2C+Ricardo%22">Serra, Ricardo</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Cavaleiro%2C+Albano%22">Cavaleiro, Albano</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Alves%2C+Cristiana%22">Alves, Cristiana</searchLink><relatesTo>5</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Cruz%2C+Sandra%22">Cruz, Sandra</searchLink><relatesTo>1,4</relatesTo> (AUTHOR)
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  Data: <searchLink fieldCode="JN" term="%22Materials+%281996-1944%29%22">Materials (1996-1944)</searchLink>. Mar2025, Vol. 18 Issue 6, p1217. 19p.
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  Data: <searchLink fieldCode="DE" term="%22Substrates+%28Materials+science%29%22">Substrates (Materials science)</searchLink><br /><searchLink fieldCode="DE" term="%22Radiofrequency+sputtering%22">Radiofrequency sputtering</searchLink><br /><searchLink fieldCode="DE" term="%22Magnetron+sputtering%22">Magnetron sputtering</searchLink><br /><searchLink fieldCode="DE" term="%22Sputter+deposition%22">Sputter deposition</searchLink><br /><searchLink fieldCode="DE" term="%22Thin+films%22">Thin films</searchLink><br /><searchLink fieldCode="DE" term="%22Magnetrons%22">Magnetrons</searchLink>
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  Label: Abstract
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  Data: This study investigates the properties of LiCoO2 coatings as cathodes for lithium-ion batteries, focusing on the effects of annealing on their structural, morphological, chemical, vibrational, and electrochemical characteristics. The LiCoO2 coatings were deposited on silicon and glass substrates using RF magnetron sputtering at 100 W and subsequently annealed at 600 °C for 1 h. The films were characterized before and after annealing using X-ray diffraction (XRD), scanning electron microscopy (SEM), energy-dispersive spectroscopy (EDS), X-ray photoelectron spectroscopy (XPS), Raman spectroscopy, and electrochemical impedance spectroscopy (EIS). Annealing improved the crystallinity of LiCoO2, which is critical for enhancing lithium-ion diffusion. Furthermore, an XPS analysis revealed a layered structure with a Li-rich outer layer and a Co-rich underlayer, indicating a more uniform distribution of Li and Co, along with increased oxygen content. Additionally, the annealing process refined the microstructure of the LiCoO2 coating, positively impacting its electrochemical performance. A comparative analysis of cyclic voltammetry (CV) and galvanostatic charge/discharge (GCD) results demonstrated a significant improvement in the charge/discharge capacity post-annealing. This study successfully highlights the beneficial effects of annealing on LiCoO2 thin-film cathodes, offering valuable insights for developing more efficient and sustainable lithium-ion batteries through sputter-deposition processes. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Materials (1996-1944) is the property of MDPI and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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        Value: 10.3390/ma18061217
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        Text: English
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        Type: general
      – SubjectFull: Radiofrequency sputtering
        Type: general
      – SubjectFull: Magnetron sputtering
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      – SubjectFull: Sputter deposition
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      – SubjectFull: Thin films
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      – SubjectFull: Magnetrons
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      – TitleFull: Effect of Annealing on LiCoO 2 Thin Film Deposited by RF Magnetron Sputtering.
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              Text: Mar2025
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