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Surface-initiated fluoride-scavenging polymeric layer on cathode materials for lithium-ion batteries.

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Title: Surface-initiated fluoride-scavenging polymeric layer on cathode materials for lithium-ion batteries.
Authors: Seo, Hyo Ree1, Lee, Hae Ri1, Kang, Dong-Ku2, Yim, Taeeun2 yte0102@inu.ac.kr, Oh, Si Hyoung1 sho74@kist.re.kr
Source: Journal of Industrial & Engineering Chemistry. Sep2017, Vol. 53, p425-428. 4p.
Subjects: Surface chemistry, Lithium manganese oxide, Chemical reactions, Electrode design & construction, Nuclear magnetic resonance spectroscopy
Abstract: Spinel-structured lithium manganese oxides (LMOs) suffer from manganese dissolution at elevated temperatures, which leads to severe capacity fading. In this work, a novel strategic approach was developed to alleviate this phenomenon by using poly(dimethylsiloxane) (PDMS) as a simple and scalable electrode additive. LMO electrodes containing finely dispersed PDMS were prepared using a conventional electrode coating process. Electrochemical studies showed that the PDMS-dispersed LMO electrodes had significantly improved cycling retentions. Ex-situ FT-IR and 19 F NMR spectra indicated PDMS chemically scavenged the F − species, which cause manganese dissolution in LMO-based cells. In addition, a plausible mechanism was proposed based on the spectroscopic evidences. [ABSTRACT FROM AUTHOR]
Copyright of Journal of Industrial & Engineering Chemistry 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: 123720815
AccessLevel: 6
PubType: Periodical
PubTypeId: serialPeriodical
PreciseRelevancyScore: 0
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  Data: Surface-initiated fluoride-scavenging polymeric layer on cathode materials for lithium-ion batteries.
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  Data: <searchLink fieldCode="AR" term="%22Seo%2C+Hyo+Ree%22">Seo, Hyo Ree</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Lee%2C+Hae+Ri%22">Lee, Hae Ri</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Kang%2C+Dong-Ku%22">Kang, Dong-Ku</searchLink><relatesTo>2</relatesTo><br /><searchLink fieldCode="AR" term="%22Yim%2C+Taeeun%22">Yim, Taeeun</searchLink><relatesTo>2</relatesTo><i> yte0102@inu.ac.kr</i><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="%22Journal+of+Industrial+%26+Engineering+Chemistry%22">Journal of Industrial & Engineering Chemistry</searchLink>. Sep2017, Vol. 53, p425-428. 4p.
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  Data: <searchLink fieldCode="DE" term="%22Surface+chemistry%22">Surface chemistry</searchLink><br /><searchLink fieldCode="DE" term="%22Lithium+manganese+oxide%22">Lithium manganese oxide</searchLink><br /><searchLink fieldCode="DE" term="%22Chemical+reactions%22">Chemical reactions</searchLink><br /><searchLink fieldCode="DE" term="%22Electrode+design+%26+construction%22">Electrode design & construction</searchLink><br /><searchLink fieldCode="DE" term="%22Nuclear+magnetic+resonance+spectroscopy%22">Nuclear magnetic resonance spectroscopy</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: Spinel-structured lithium manganese oxides (LMOs) suffer from manganese dissolution at elevated temperatures, which leads to severe capacity fading. In this work, a novel strategic approach was developed to alleviate this phenomenon by using poly(dimethylsiloxane) (PDMS) as a simple and scalable electrode additive. LMO electrodes containing finely dispersed PDMS were prepared using a conventional electrode coating process. Electrochemical studies showed that the PDMS-dispersed LMO electrodes had significantly improved cycling retentions. Ex-situ FT-IR and 19 F NMR spectra indicated PDMS chemically scavenged the F − species, which cause manganese dissolution in LMO-based cells. In addition, a plausible mechanism was proposed based on the spectroscopic evidences. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Journal of Industrial & Engineering Chemistry 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.jiec.2017.05.015
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      – Code: eng
        Text: English
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        PageCount: 4
        StartPage: 425
    Subjects:
      – SubjectFull: Surface chemistry
        Type: general
      – SubjectFull: Lithium manganese oxide
        Type: general
      – SubjectFull: Chemical reactions
        Type: general
      – SubjectFull: Electrode design & construction
        Type: general
      – SubjectFull: Nuclear magnetic resonance spectroscopy
        Type: general
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      – TitleFull: Surface-initiated fluoride-scavenging polymeric layer on cathode materials for lithium-ion batteries.
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            NameFull: Lee, Hae Ri
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            NameFull: Kang, Dong-Ku
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            NameFull: Yim, Taeeun
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            NameFull: Oh, Si Hyoung
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              M: 09
              Text: Sep2017
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              Y: 2017
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              Value: 53
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