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Nanofabrication of selenium/reduced graphene oxide composite with sulfur doping via solution co-impregnation for enhanced lithium-selenium batteries.

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Title: Nanofabrication of selenium/reduced graphene oxide composite with sulfur doping via solution co-impregnation for enhanced lithium-selenium batteries.
Authors: Lu, Bo1 (AUTHOR), Wang, Zeng-Rong1 (AUTHOR), Sun, Qiang1 (AUTHOR) sunq@smm.neu.edu.cn
Source: Journal of Electroanalytical Chemistry. Jul2023, Vol. 941, pN.PAG-N.PAG. 1p.
Subjects: Selenium, Nanofabrication, Sulfur oxides, Polysulfides, Chemical bonds, Graphene oxide, Transition metal oxides
Abstract: A sulfur-doped selenium/reduced graphene oxide composite (Se 68 -S 9 /rGO) was synthesized as a cathode material for Li-Se batteries via a hydrazine hydrate-solution. Wherein, the introduction of S could enhance the energy density, and the formation of C S and the bonding between Se and S effectively limited the dissolution of intermediates, significantly enhancing the electrochemical performance of the composite. As expected, the Se 68 -S 9 /rGO can still exhibit superior cycling performance with high Se and S content of ca. 80 wt%. [Display omitted] • Se 68 -S 9 /rGO was synthesized via a hydrazine hydrate-solution impregnation. • The C S and Se-S obviously limited the dissolution and generation of intermediates. • Se 68 -S 9 /rGO shows a capacity of 538 mA h g−1 at 0.5C after 200 cycles. Lithium-selenium batteries are still plagued by polyselenides dissolution and low utilization of active material. In the present work, sulfur-doped selenium/reduced graphene oxide composite (Se 68 -S 9 /rGO) was successfully designed and prepared by solution co-impregnation of selenium and sulfur within the rGO matrix, and further used as cathode materials in lithium-selenium batteries. The introduction of sulfur could form the C S chemical bond and the stable chemical bond between selenium and sulfur, which effectively limit the leaching of higher order soluble polyselenides intermediate as well as immobilizing Se, further enhancing the rate performance and the cycling stability of the Se 68 -S 9 /rGO cathode. With high selenium and sulfur content of ca. 80%, the Se 68 -S 9 /rGO cathode can achieve a capacity of 538 mA h g−1 after 200 cycles at a current density of 0.5 C, and a capacity of 473 mA h g−1 after 200 cycles at a current density of 1 C, exhibiting superior cycling performance. [ABSTRACT FROM AUTHOR]
Copyright of Journal of Electroanalytical 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.)
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Items – Name: Title
  Label: Title
  Group: Ti
  Data: Nanofabrication of selenium/reduced graphene oxide composite with sulfur doping via solution co-impregnation for enhanced lithium-selenium batteries.
– Name: Author
  Label: Authors
  Group: Au
  Data: <searchLink fieldCode="AR" term="%22Lu%2C+Bo%22">Lu, Bo</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Wang%2C+Zeng-Rong%22">Wang, Zeng-Rong</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Sun%2C+Qiang%22">Sun, Qiang</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> sunq@smm.neu.edu.cn</i>
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  Label: Source
  Group: Src
  Data: <searchLink fieldCode="JN" term="%22Journal+of+Electroanalytical+Chemistry%22">Journal of Electroanalytical Chemistry</searchLink>. Jul2023, Vol. 941, pN.PAG-N.PAG. 1p.
– Name: Subject
  Label: Subjects
  Group: Su
  Data: <searchLink fieldCode="DE" term="%22Selenium%22">Selenium</searchLink><br /><searchLink fieldCode="DE" term="%22Nanofabrication%22">Nanofabrication</searchLink><br /><searchLink fieldCode="DE" term="%22Sulfur+oxides%22">Sulfur oxides</searchLink><br /><searchLink fieldCode="DE" term="%22Polysulfides%22">Polysulfides</searchLink><br /><searchLink fieldCode="DE" term="%22Chemical+bonds%22">Chemical bonds</searchLink><br /><searchLink fieldCode="DE" term="%22Graphene+oxide%22">Graphene oxide</searchLink><br /><searchLink fieldCode="DE" term="%22Transition+metal+oxides%22">Transition metal oxides</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: A sulfur-doped selenium/reduced graphene oxide composite (Se 68 -S 9 /rGO) was synthesized as a cathode material for Li-Se batteries via a hydrazine hydrate-solution. Wherein, the introduction of S could enhance the energy density, and the formation of C S and the bonding between Se and S effectively limited the dissolution of intermediates, significantly enhancing the electrochemical performance of the composite. As expected, the Se 68 -S 9 /rGO can still exhibit superior cycling performance with high Se and S content of ca. 80 wt%. [Display omitted] • Se 68 -S 9 /rGO was synthesized via a hydrazine hydrate-solution impregnation. • The C S and Se-S obviously limited the dissolution and generation of intermediates. • Se 68 -S 9 /rGO shows a capacity of 538 mA h g−1 at 0.5C after 200 cycles. Lithium-selenium batteries are still plagued by polyselenides dissolution and low utilization of active material. In the present work, sulfur-doped selenium/reduced graphene oxide composite (Se 68 -S 9 /rGO) was successfully designed and prepared by solution co-impregnation of selenium and sulfur within the rGO matrix, and further used as cathode materials in lithium-selenium batteries. The introduction of sulfur could form the C S chemical bond and the stable chemical bond between selenium and sulfur, which effectively limit the leaching of higher order soluble polyselenides intermediate as well as immobilizing Se, further enhancing the rate performance and the cycling stability of the Se 68 -S 9 /rGO cathode. With high selenium and sulfur content of ca. 80%, the Se 68 -S 9 /rGO cathode can achieve a capacity of 538 mA h g−1 after 200 cycles at a current density of 0.5 C, and a capacity of 473 mA h g−1 after 200 cycles at a current density of 1 C, exhibiting superior cycling performance. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Journal of Electroanalytical 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:
  BibEntity:
    Identifiers:
      – Type: doi
        Value: 10.1016/j.jelechem.2023.117545
    Languages:
      – Code: eng
        Text: English
    PhysicalDescription:
      Pagination:
        PageCount: 1
        StartPage: N.PAG
    Subjects:
      – SubjectFull: Selenium
        Type: general
      – SubjectFull: Nanofabrication
        Type: general
      – SubjectFull: Sulfur oxides
        Type: general
      – SubjectFull: Polysulfides
        Type: general
      – SubjectFull: Chemical bonds
        Type: general
      – SubjectFull: Graphene oxide
        Type: general
      – SubjectFull: Transition metal oxides
        Type: general
    Titles:
      – TitleFull: Nanofabrication of selenium/reduced graphene oxide composite with sulfur doping via solution co-impregnation for enhanced lithium-selenium batteries.
        Type: main
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      – PersonEntity:
          Name:
            NameFull: Lu, Bo
      – PersonEntity:
          Name:
            NameFull: Wang, Zeng-Rong
      – PersonEntity:
          Name:
            NameFull: Sun, Qiang
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          Dates:
            – D: 15
              M: 07
              Text: Jul2023
              Type: published
              Y: 2023
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              Value: 15726657
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              Value: 941
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            – TitleFull: Journal of Electroanalytical Chemistry
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