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Amorphous carbon-encapsulated Si nanoparticles loading on MCMB with sandwich structure for lithium ion batteries.

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Title: Amorphous carbon-encapsulated Si nanoparticles loading on MCMB with sandwich structure for lithium ion batteries.
Authors: Fan, Peng1 (AUTHOR), Mu, Tiansheng1 (AUTHOR), Lou, Shuaifeng1 (AUTHOR) shuaifeng.lou@hit.edu.cn, Cheng, Xinqun1 (AUTHOR), Gao, Yunzhi1 (AUTHOR), Du, Chunyu1 (AUTHOR), Zuo, Pengjian1 (AUTHOR), Ma, Yulin1 (AUTHOR), Yin, Geping1 (AUTHOR) yingeping@hit.edu.cn
Source: Electrochimica Acta. May2019, Vol. 306, p590-598. 9p.
Subjects: Lithium-ion batteries, Storage batteries, Ionic structure, Electric conductivity, Energy density, Amorphous carbon, Density currents
Abstract: Si-based anode materials have been widely accepted as one of the most potential candidates for lithium ion batteries due to their abundance and high theoretical specific capacity. However, their practical application is seriously restricted by huge volume change and low intrinsic electric conductivity. Herein, a sandwich structured mesocarbon microbeads/nano-Si/amorphous carbon (MSC) composite was successfully fabricated through simple solution process and magnesiothermic reduction. The MCMB core acts as perfect materials support for nano-Si and conductive network for high electrochemical lithiation stability. Nano-Si provides high lithium storage capacity for enhanced energy density, and the amorphous carbon layer can effectively buffer the volume change from the nano-Si. As a result, the obtained MSC composite with optimal design displays high reversible capacity of 648 mA h g−1 at a current density of 100 mA g−1, along with a satisfactory capacity retention ratio of 90.3% after 100 cycles. To sum up, we develop a simple approach for large-scale preparation of silicon-based composites with high capacity and long-term cycle stability, which shows great potential for applications in the next-generation lithium ion batteries. Image 1 [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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Header DbId: egs
DbLabel: Engineering Source
An: 136348789
AccessLevel: 6
PubType: Academic Journal
PubTypeId: academicJournal
PreciseRelevancyScore: 0
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  Label: Title
  Group: Ti
  Data: Amorphous carbon-encapsulated Si nanoparticles loading on MCMB with sandwich structure for lithium ion batteries.
– Name: Author
  Label: Authors
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  Data: <searchLink fieldCode="AR" term="%22Fan%2C+Peng%22">Fan, Peng</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Mu%2C+Tiansheng%22">Mu, Tiansheng</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Lou%2C+Shuaifeng%22">Lou, Shuaifeng</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> shuaifeng.lou@hit.edu.cn</i><br /><searchLink fieldCode="AR" term="%22Cheng%2C+Xinqun%22">Cheng, Xinqun</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Gao%2C+Yunzhi%22">Gao, Yunzhi</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Du%2C+Chunyu%22">Du, Chunyu</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Zuo%2C+Pengjian%22">Zuo, Pengjian</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Ma%2C+Yulin%22">Ma, Yulin</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Yin%2C+Geping%22">Yin, Geping</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> yingeping@hit.edu.cn</i>
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  Label: Source
  Group: Src
  Data: <searchLink fieldCode="JN" term="%22Electrochimica+Acta%22">Electrochimica Acta</searchLink>. May2019, Vol. 306, p590-598. 9p.
– Name: Subject
  Label: Subjects
  Group: Su
  Data: <searchLink fieldCode="DE" term="%22Lithium-ion+batteries%22">Lithium-ion batteries</searchLink><br /><searchLink fieldCode="DE" term="%22Storage+batteries%22">Storage batteries</searchLink><br /><searchLink fieldCode="DE" term="%22Ionic+structure%22">Ionic structure</searchLink><br /><searchLink fieldCode="DE" term="%22Electric+conductivity%22">Electric conductivity</searchLink><br /><searchLink fieldCode="DE" term="%22Energy+density%22">Energy density</searchLink><br /><searchLink fieldCode="DE" term="%22Amorphous+carbon%22">Amorphous carbon</searchLink><br /><searchLink fieldCode="DE" term="%22Density+currents%22">Density currents</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: Si-based anode materials have been widely accepted as one of the most potential candidates for lithium ion batteries due to their abundance and high theoretical specific capacity. However, their practical application is seriously restricted by huge volume change and low intrinsic electric conductivity. Herein, a sandwich structured mesocarbon microbeads/nano-Si/amorphous carbon (MSC) composite was successfully fabricated through simple solution process and magnesiothermic reduction. The MCMB core acts as perfect materials support for nano-Si and conductive network for high electrochemical lithiation stability. Nano-Si provides high lithium storage capacity for enhanced energy density, and the amorphous carbon layer can effectively buffer the volume change from the nano-Si. As a result, the obtained MSC composite with optimal design displays high reversible capacity of 648 mA h g−1 at a current density of 100 mA g−1, along with a satisfactory capacity retention ratio of 90.3% after 100 cycles. To sum up, we develop a simple approach for large-scale preparation of silicon-based composites with high capacity and long-term cycle stability, which shows great potential for applications in the next-generation lithium ion batteries. Image 1 [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:
  BibEntity:
    Identifiers:
      – Type: doi
        Value: 10.1016/j.electacta.2019.03.154
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      – Code: eng
        Text: English
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        PageCount: 9
        StartPage: 590
    Subjects:
      – SubjectFull: Lithium-ion batteries
        Type: general
      – SubjectFull: Storage batteries
        Type: general
      – SubjectFull: Ionic structure
        Type: general
      – SubjectFull: Electric conductivity
        Type: general
      – SubjectFull: Energy density
        Type: general
      – SubjectFull: Amorphous carbon
        Type: general
      – SubjectFull: Density currents
        Type: general
    Titles:
      – TitleFull: Amorphous carbon-encapsulated Si nanoparticles loading on MCMB with sandwich structure for lithium ion batteries.
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            NameFull: Fan, Peng
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            – D: 20
              M: 05
              Text: May2019
              Type: published
              Y: 2019
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              Value: 306
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