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Improved electrochemical properties of Li4Ti5O12–Li0.33La0.56TiO3 composite anodes prepared by a solid-state synthesis.

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Title: Improved electrochemical properties of Li4Ti5O12–Li0.33La0.56TiO3 composite anodes prepared by a solid-state synthesis.
Authors: Zhu, Yan-Rong1, Yuan, Jing1, Zhu, Min1, Hao, Guodong2, Yi, Ting-Feng1 tfyihit@163.com, Xie, Ying3 xieying@hlju.edu.cn
Source: Journal of Alloys & Compounds. Oct2015, Vol. 646, p612-619. 8p.
Subjects: Lithium titanate, Electrochemical electrodes, Metallic composites, Chemical sample preparation, Solid state chemistry, Chemical synthesis
Abstract: Li 4 Ti 5 O 12 –Li 0.33 La 0.56 TiO 3 composite anodes are successfully prepared by a facile solid state route. The structure, morphology and electrochemical performance of all samples are characterized by X-ray diffraction (XRD), Raman spectroscopy, scanning electron microscope (SEM), cyclic voltammetry (CV), electrochemical impedance spectroscopy (EIS), and charge–discharge tests, respectively. XRD reveals that the little La 3+ ions enter into the lattice, and then make the crystal lattice of Li 4 Ti 5 O 12 expand. SEM shows that all samples are composed of 1–2 μm primary particles with irregular shapes. CV and EIS imply that Li 4 Ti 5 O 12 –Li 0.33 La 0.56 TiO 3 composites have lower polarization, larger lithium-ion diffusion coefficient and smaller charge transfer resistance corresponding to a much higher conductivity than those of Li 4 Ti 5 O 12 corresponding to the extraction of Li + ions. The improved electrochemical performance of Li 4 Ti 5 O 12 –Li 0.33 La 0.56 TiO 3 composites can be attributed to the enhanced transfer kinetics of both the lithium ions and electrons. Particularly, Li 4 Ti 5 O 12 –Li 0.33 La 0.56 TiO 3 (5 wt.%) composite shows a excellent high-rate capability and cycling stability. Therefore, the present Li 4 Ti 5 O 12 –Li 0.33 La 0.56 TiO 3 (5 wt.%) composite anode is capable of large-scale applications, such as electric vehicles and hybrid electric vehicles, requiring high energy, long life and excellent safety. [ABSTRACT FROM AUTHOR]
Copyright of Journal of Alloys & Compounds is the property of Elsevier B.V. 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.)
Database: Engineering Source
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Header DbId: egs
DbLabel: Engineering Source
An: 109317725
AccessLevel: 6
PubType: Academic Journal
PubTypeId: academicJournal
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  Label: Title
  Group: Ti
  Data: Improved electrochemical properties of Li4Ti5O12–Li0.33La0.56TiO3 composite anodes prepared by a solid-state synthesis.
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  Data: <searchLink fieldCode="AR" term="%22Zhu%2C+Yan-Rong%22">Zhu, Yan-Rong</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Yuan%2C+Jing%22">Yuan, Jing</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Zhu%2C+Min%22">Zhu, Min</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Hao%2C+Guodong%22">Hao, Guodong</searchLink><relatesTo>2</relatesTo><br /><searchLink fieldCode="AR" term="%22Yi%2C+Ting-Feng%22">Yi, Ting-Feng</searchLink><relatesTo>1</relatesTo><i> tfyihit@163.com</i><br /><searchLink fieldCode="AR" term="%22Xie%2C+Ying%22">Xie, Ying</searchLink><relatesTo>3</relatesTo><i> xieying@hlju.edu.cn</i>
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  Data: <searchLink fieldCode="JN" term="%22Journal+of+Alloys+%26+Compounds%22">Journal of Alloys & Compounds</searchLink>. Oct2015, Vol. 646, p612-619. 8p.
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  Data: <searchLink fieldCode="DE" term="%22Lithium+titanate%22">Lithium titanate</searchLink><br /><searchLink fieldCode="DE" term="%22Electrochemical+electrodes%22">Electrochemical electrodes</searchLink><br /><searchLink fieldCode="DE" term="%22Metallic+composites%22">Metallic composites</searchLink><br /><searchLink fieldCode="DE" term="%22Chemical+sample+preparation%22">Chemical sample preparation</searchLink><br /><searchLink fieldCode="DE" term="%22Solid+state+chemistry%22">Solid state chemistry</searchLink><br /><searchLink fieldCode="DE" term="%22Chemical+synthesis%22">Chemical synthesis</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: Li 4 Ti 5 O 12 –Li 0.33 La 0.56 TiO 3 composite anodes are successfully prepared by a facile solid state route. The structure, morphology and electrochemical performance of all samples are characterized by X-ray diffraction (XRD), Raman spectroscopy, scanning electron microscope (SEM), cyclic voltammetry (CV), electrochemical impedance spectroscopy (EIS), and charge–discharge tests, respectively. XRD reveals that the little La 3+ ions enter into the lattice, and then make the crystal lattice of Li 4 Ti 5 O 12 expand. SEM shows that all samples are composed of 1–2 μm primary particles with irregular shapes. CV and EIS imply that Li 4 Ti 5 O 12 –Li 0.33 La 0.56 TiO 3 composites have lower polarization, larger lithium-ion diffusion coefficient and smaller charge transfer resistance corresponding to a much higher conductivity than those of Li 4 Ti 5 O 12 corresponding to the extraction of Li + ions. The improved electrochemical performance of Li 4 Ti 5 O 12 –Li 0.33 La 0.56 TiO 3 composites can be attributed to the enhanced transfer kinetics of both the lithium ions and electrons. Particularly, Li 4 Ti 5 O 12 –Li 0.33 La 0.56 TiO 3 (5 wt.%) composite shows a excellent high-rate capability and cycling stability. Therefore, the present Li 4 Ti 5 O 12 –Li 0.33 La 0.56 TiO 3 (5 wt.%) composite anode is capable of large-scale applications, such as electric vehicles and hybrid electric vehicles, requiring high energy, long life and excellent safety. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Journal of Alloys & Compounds is the property of Elsevier B.V. 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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RecordInfo BibRecord:
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      – Type: doi
        Value: 10.1016/j.jallcom.2015.05.239
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      – Code: eng
        Text: English
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        PageCount: 8
        StartPage: 612
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      – SubjectFull: Lithium titanate
        Type: general
      – SubjectFull: Electrochemical electrodes
        Type: general
      – SubjectFull: Metallic composites
        Type: general
      – SubjectFull: Chemical sample preparation
        Type: general
      – SubjectFull: Solid state chemistry
        Type: general
      – SubjectFull: Chemical synthesis
        Type: general
    Titles:
      – TitleFull: Improved electrochemical properties of Li4Ti5O12–Li0.33La0.56TiO3 composite anodes prepared by a solid-state synthesis.
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          Name:
            NameFull: Zhu, Yan-Rong
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            NameFull: Yuan, Jing
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            NameFull: Zhu, Min
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            NameFull: Hao, Guodong
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            NameFull: Yi, Ting-Feng
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            NameFull: Xie, Ying
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              Text: Oct2015
              Type: published
              Y: 2015
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              Value: 646
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            – TitleFull: Journal of Alloys & Compounds
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