View in EDS

Synthesis and electrochemistry of 5V LiNi0.4Mn1.6O4 cathode materials synthesized by different methods

Saved in:
Bibliographic Details
Title: Synthesis and electrochemistry of 5V LiNi0.4Mn1.6O4 cathode materials synthesized by different methods
Authors: Yi, Ting-Feng tfyihit@163.com, Zhu, Yan-Rong1
Source: Electrochimica Acta. Feb2008, Vol. 53 Issue 7, p3120-3126. 7p.
Subjects: Electrochemistry, Cathodes, Lithium ions, Electric batteries
Abstract: Abstract: Spinel LiNi0.4Mn1.6O4 has been successfully synthesized by ultrasonic-assisted co-precipitation (UACP) method. The structure and physicochemical properties of this as-prepared powder compared with the LiNi0.4Mn1.6O4 synthesized by co-precipitation method were investigated by powder X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), Fourier transform infrared (FT-IR) spectroscopy, scanning electron microscopy (SEM), cyclic voltammetry (CV), electrochemical impedance spectroscopy (EIS) and galvanostatic charge–discharge test in detail. XRD and SEM show that all samples have high phase purity, and ultrasonic process plays an important role in controlling morphology; FT-IR reveals that the Mn(III)–O stretching band at 511cm−1 has a red shift to 503cm−1, and the Mn(IV)–O stretching band at 612cm−1 has a blue shift to 622cm−1 because of the doped Ni. CV confirms that the LiNi0.4Mn1.6O4 sample (UACP) has bigger area of the reduction peaks than that of sample synthesized by co-precipitation method, indicating that the former has higher discharge capacity than that of the latter. Galvanostatic charge–discharge test indicates that the initial discharge capacities for the LiNi0.4Mn1.6O4 (UACP) at C/5 and 1C are 129 and 116mAhg−1, respectively. After 100 cycles, their capacity retentions are 94.6% and 85.3%, respectively. EIS indicates that LiNi0.4Mn1.6O4 samples synthesized by UACP method have smaller charge transfer resistance than that of samples synthesized by co-precipitation method corresponding to the extraction of Li+ ions. [Copyright &y& Elsevier]
Copyright of Electrochimica Acta is the property of Pergamon Press - An Imprint of Elsevier Science 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
FullText Text:
  Availability: 0
Header DbId: egs
DbLabel: Engineering Source
An: 28753647
AccessLevel: 6
PubType: Academic Journal
PubTypeId: academicJournal
PreciseRelevancyScore: 0
IllustrationInfo
Items – Name: Title
  Label: Title
  Group: Ti
  Data: Synthesis and electrochemistry of 5V LiNi<subscript>0.4</subscript>Mn<subscript>1.6</subscript>O<subscript>4</subscript> cathode materials synthesized by different methods
– Name: Author
  Label: Authors
  Group: Au
  Data: <searchLink fieldCode="AR" term="%22Yi%2C+Ting-Feng%22">Yi, Ting-Feng</searchLink><i> tfyihit@163.com</i><br /><searchLink fieldCode="AR" term="%22Zhu%2C+Yan-Rong%22">Zhu, Yan-Rong</searchLink><relatesTo>1</relatesTo>
– Name: TitleSource
  Label: Source
  Group: Src
  Data: <searchLink fieldCode="JN" term="%22Electrochimica+Acta%22">Electrochimica Acta</searchLink>. Feb2008, Vol. 53 Issue 7, p3120-3126. 7p.
– Name: Subject
  Label: Subjects
  Group: Su
  Data: <searchLink fieldCode="DE" term="%22Electrochemistry%22">Electrochemistry</searchLink><br /><searchLink fieldCode="DE" term="%22Cathodes%22">Cathodes</searchLink><br /><searchLink fieldCode="DE" term="%22Lithium+ions%22">Lithium ions</searchLink><br /><searchLink fieldCode="DE" term="%22Electric+batteries%22">Electric batteries</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: Abstract: Spinel LiNi0.4Mn1.6O4 has been successfully synthesized by ultrasonic-assisted co-precipitation (UACP) method. The structure and physicochemical properties of this as-prepared powder compared with the LiNi0.4Mn1.6O4 synthesized by co-precipitation method were investigated by powder X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), Fourier transform infrared (FT-IR) spectroscopy, scanning electron microscopy (SEM), cyclic voltammetry (CV), electrochemical impedance spectroscopy (EIS) and galvanostatic charge–discharge test in detail. XRD and SEM show that all samples have high phase purity, and ultrasonic process plays an important role in controlling morphology; FT-IR reveals that the Mn(III)–O stretching band at 511cm−1 has a red shift to 503cm−1, and the Mn(IV)–O stretching band at 612cm−1 has a blue shift to 622cm−1 because of the doped Ni. CV confirms that the LiNi0.4Mn1.6O4 sample (UACP) has bigger area of the reduction peaks than that of sample synthesized by co-precipitation method, indicating that the former has higher discharge capacity than that of the latter. Galvanostatic charge–discharge test indicates that the initial discharge capacities for the LiNi0.4Mn1.6O4 (UACP) at C/5 and 1C are 129 and 116mAhg−1, respectively. After 100 cycles, their capacity retentions are 94.6% and 85.3%, respectively. EIS indicates that LiNi0.4Mn1.6O4 samples synthesized by UACP method have smaller charge transfer resistance than that of samples synthesized by co-precipitation method corresponding to the extraction of Li+ ions. [Copyright &y& Elsevier]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Electrochimica Acta is the property of Pergamon Press - An Imprint of Elsevier Science 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.)
PLink https://search.ebscohost.com/login.aspx?direct=true&site=eds-live&db=egs&AN=28753647
RecordInfo BibRecord:
  BibEntity:
    Identifiers:
      – Type: doi
        Value: 10.1016/j.electacta.2007.11.062
    Languages:
      – Code: eng
        Text: English
    PhysicalDescription:
      Pagination:
        PageCount: 7
        StartPage: 3120
    Subjects:
      – SubjectFull: Electrochemistry
        Type: general
      – SubjectFull: Cathodes
        Type: general
      – SubjectFull: Lithium ions
        Type: general
      – SubjectFull: Electric batteries
        Type: general
    Titles:
      – TitleFull: Synthesis and electrochemistry of 5V LiNi0.4Mn1.6O4 cathode materials synthesized by different methods
        Type: main
  BibRelationships:
    HasContributorRelationships:
      – PersonEntity:
          Name:
            NameFull: Yi, Ting-Feng
      – PersonEntity:
          Name:
            NameFull: Zhu, Yan-Rong
    IsPartOfRelationships:
      – BibEntity:
          Dates:
            – D: 25
              M: 02
              Text: Feb2008
              Type: published
              Y: 2008
          Identifiers:
            – Type: issn-print
              Value: 00134686
          Numbering:
            – Type: volume
              Value: 53
            – Type: issue
              Value: 7
          Titles:
            – TitleFull: Electrochimica Acta
              Type: main
ResultId 1