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Scalable synthesis and electrochemical investigations of fluorine-doped lithium manganese spinel oxide.

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Title: Scalable synthesis and electrochemical investigations of fluorine-doped lithium manganese spinel oxide.
Authors: Lee, Hae Ri1,2, Lee, Boeun1, Chung, Kyung Yoon1, Cho, Byung Won1, Lee, Kwan-Young2, Oh, Si Hyoung1 sho74@kist.re.kr
Source: Electrochimica Acta. Aug2014, Vol. 136, p396-403. 8p.
Subjects: Lithium manganese oxide, Electrochemical analysis, Fluorine, Spinel, Chemical synthesis, Electronic structure
Abstract: A scalable synthesis route for the preparation of fluorine-doped lithium manganese spinel was developed. The effect of 2.5% fluorine doping on the properties of aluminum-doped lithium manganese spinel was investigated by examining the electrochemical performance and structural changes. The electrochemical study indicates that the initial discharge capacity increases by about 5% while other properties, like the capacity retention and rate performance, remain almost unchanged. The structural studies indicate that no impurity phase was formed, along with only little morphological changes and a slight increase in the lattice parameter. The Mn K-edge absorption spectra clearly show that the average manganese oxidation state decreases as a result of fluorine doping and Mn LII,III -edge spectra indicate that the electronic structure of the fluorine-doped spinel changes significantly, which may alleviate the intrinsic structural instability of this material. [ABSTRACT FROM AUTHOR]
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
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DbLabel: Engineering Source
An: 97128926
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PubTypeId: academicJournal
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  Data: Scalable synthesis and electrochemical investigations of fluorine-doped lithium manganese spinel oxide.
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  Data: <searchLink fieldCode="AR" term="%22Lee%2C+Hae+Ri%22">Lee, Hae Ri</searchLink><relatesTo>1,2</relatesTo><br /><searchLink fieldCode="AR" term="%22Lee%2C+Boeun%22">Lee, Boeun</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Chung%2C+Kyung+Yoon%22">Chung, Kyung Yoon</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Cho%2C+Byung+Won%22">Cho, Byung Won</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Lee%2C+Kwan-Young%22">Lee, Kwan-Young</searchLink><relatesTo>2</relatesTo><br /><searchLink fieldCode="AR" term="%22Oh%2C+Si+Hyoung%22">Oh, Si Hyoung</searchLink><relatesTo>1</relatesTo><i> sho74@kist.re.kr</i>
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  Data: <searchLink fieldCode="JN" term="%22Electrochimica+Acta%22">Electrochimica Acta</searchLink>. Aug2014, Vol. 136, p396-403. 8p.
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  Data: <searchLink fieldCode="DE" term="%22Lithium+manganese+oxide%22">Lithium manganese oxide</searchLink><br /><searchLink fieldCode="DE" term="%22Electrochemical+analysis%22">Electrochemical analysis</searchLink><br /><searchLink fieldCode="DE" term="%22Fluorine%22">Fluorine</searchLink><br /><searchLink fieldCode="DE" term="%22Spinel%22">Spinel</searchLink><br /><searchLink fieldCode="DE" term="%22Chemical+synthesis%22">Chemical synthesis</searchLink><br /><searchLink fieldCode="DE" term="%22Electronic+structure%22">Electronic structure</searchLink>
– Name: Abstract
  Label: Abstract
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  Data: A scalable synthesis route for the preparation of fluorine-doped lithium manganese spinel was developed. The effect of 2.5% fluorine doping on the properties of aluminum-doped lithium manganese spinel was investigated by examining the electrochemical performance and structural changes. The electrochemical study indicates that the initial discharge capacity increases by about 5% while other properties, like the capacity retention and rate performance, remain almost unchanged. The structural studies indicate that no impurity phase was formed, along with only little morphological changes and a slight increase in the lattice parameter. The Mn K-edge absorption spectra clearly show that the average manganese oxidation state decreases as a result of fluorine doping and Mn LII,III -edge spectra indicate that the electronic structure of the fluorine-doped spinel changes significantly, which may alleviate the intrinsic structural instability of this material. [ABSTRACT FROM AUTHOR]
– 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.)
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RecordInfo BibRecord:
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      – Type: doi
        Value: 10.1016/j.electacta.2014.05.106
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      – Code: eng
        Text: English
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        PageCount: 8
        StartPage: 396
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      – SubjectFull: Lithium manganese oxide
        Type: general
      – SubjectFull: Electrochemical analysis
        Type: general
      – SubjectFull: Fluorine
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      – SubjectFull: Spinel
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      – SubjectFull: Chemical synthesis
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      – SubjectFull: Electronic structure
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              M: 08
              Text: Aug2014
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              Y: 2014
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