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Scalable 2D Mesoporous Silicon Nanosheets for High‐Performance Lithium‐Ion Battery Anode

Constructing unique mesoporous 2D Si nanostructures to shorten the lithium‐ion diffusion pathway, facilitate interfacial charge transfer, and enlarge the electrode–electrolyte interface offers exciting opportunities in future high‐performance lithium‐ion batteries. However, simultaneous realization... Full description

Journal Title: Small March 2018, Vol.14(12), pp.n/a-n/a
Main Author: Chen, Song
Other Authors: Chen, Zhuo , Xu, Xingyan , Cao, Chuanbao , Xia, Min , Luo, Yunjun
Format: Electronic Article Electronic Article
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Subjects:
2d
ID: ISSN: 1613-6810 ; E-ISSN: 1613-6829 ; DOI: 10.1002/smll.201703361
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recordid: wj10.1002/smll.201703361
title: Scalable 2D Mesoporous Silicon Nanosheets for High‐Performance Lithium‐Ion Battery Anode
format: Article
creator:
  • Chen, Song
  • Chen, Zhuo
  • Xu, Xingyan
  • Cao, Chuanbao
  • Xia, Min
  • Luo, Yunjun
subjects:
  • 2d
  • Electrochemical Properties
  • Lithium‐Ion Batteries
  • Mesoporous
  • Si Nanosheets
ispartof: Small, March 2018, Vol.14(12), pp.n/a-n/a
description: Constructing unique mesoporous 2D Si nanostructures to shorten the lithium‐ion diffusion pathway, facilitate interfacial charge transfer, and enlarge the electrode–electrolyte interface offers exciting opportunities in future high‐performance lithium‐ion batteries. However, simultaneous realization of 2D and mesoporous structures for Si material is quite difficult due to its non‐van der Waals structure. Here, the coexistence of both mesoporous and 2D ultrathin nanosheets in the Si anodes and considerably high surface area (381.6 m g) are successfully achieved by a scalable and cost‐efficient method. After being encapsulated with the homogeneous carbon layer, the Si/C nanocomposite anodes achieve outstanding reversible capacity, high cycle stability, and excellent rate capability. In particular, the reversible capacity reaches 1072.2 mA h g at 4 A g even after 500 cycles. The obvious enhancements can be attributed to the synergistic effect between the unique 2D mesoporous nanostructure and carbon capsulation. Furthermore, full‐cell evaluations indicate that the unique Si/C nanostructures have a great potential in the next‐generation lithium‐ion battery. These findings not only greatly improve the electrochemical performances of Si anode, but also shine some light on designing the unique nanomaterials for various energy devices. are successfully developed by a scalable and low‐cost method. After being encapsulated with the homogeneous carbon layer, the Si/C nanocomposite anodes achieve outstanding lithium‐storage properties with good rate capacity and remarkable cycling stability, which illustrates that the unique nanomaterial is a promising candidate material for the next‐generation lithium‐ion batteries.
language:
source:
identifier: ISSN: 1613-6810 ; E-ISSN: 1613-6829 ; DOI: 10.1002/smll.201703361
fulltext: fulltext
issn:
  • 1613-6810
  • 16136810
  • 1613-6829
  • 16136829
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titleScalable 2D Mesoporous Silicon Nanosheets for High‐Performance Lithium‐Ion Battery Anode
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subject2d ; Electrochemical Properties ; Lithium‐Ion Batteries ; Mesoporous ; Si Nanosheets
descriptionConstructing unique mesoporous 2D Si nanostructures to shorten the lithium‐ion diffusion pathway, facilitate interfacial charge transfer, and enlarge the electrode–electrolyte interface offers exciting opportunities in future high‐performance lithium‐ion batteries. However, simultaneous realization of 2D and mesoporous structures for Si material is quite difficult due to its non‐van der Waals structure. Here, the coexistence of both mesoporous and 2D ultrathin nanosheets in the Si anodes and considerably high surface area (381.6 m g) are successfully achieved by a scalable and cost‐efficient method. After being encapsulated with the homogeneous carbon layer, the Si/C nanocomposite anodes achieve outstanding reversible capacity, high cycle stability, and excellent rate capability. In particular, the reversible capacity reaches 1072.2 mA h g at 4 A g even after 500 cycles. The obvious enhancements can be attributed to the synergistic effect between the unique 2D mesoporous nanostructure and carbon capsulation. Furthermore, full‐cell evaluations indicate that the unique Si/C nanostructures have a great potential in the next‐generation lithium‐ion battery. These findings not only greatly improve the electrochemical performances of Si anode, but also shine some light on designing the unique nanomaterials for various energy devices. are successfully developed by a scalable and low‐cost method. After being encapsulated with the homogeneous carbon layer, the Si/C nanocomposite anodes achieve outstanding lithium‐storage properties with good rate capacity and remarkable cycling stability, which illustrates that the unique nanomaterial is a promising candidate material for the next‐generation lithium‐ion batteries.
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descriptionConstructing unique mesoporous 2D Si nanostructures to shorten the lithium‐ion diffusion pathway, facilitate interfacial charge transfer, and enlarge the electrode–electrolyte interface offers exciting opportunities in future high‐performance lithium‐ion batteries. However, simultaneous realization of 2D and mesoporous structures for Si material is quite difficult due to its non‐van der Waals structure. Here, the coexistence of both mesoporous and 2D ultrathin nanosheets in the Si anodes and considerably high surface area (381.6 m g) are successfully achieved by a scalable and cost‐efficient method. After being encapsulated with the homogeneous carbon layer, the Si/C nanocomposite anodes achieve outstanding reversible capacity, high cycle stability, and excellent rate capability. In particular, the reversible capacity reaches 1072.2 mA h g at 4 A g even after 500 cycles. The obvious enhancements can be attributed to the synergistic effect between the unique 2D mesoporous nanostructure and carbon capsulation. Furthermore, full‐cell evaluations indicate that the unique Si/C nanostructures have a great potential in the next‐generation lithium‐ion battery. These findings not only greatly improve the electrochemical performances of Si anode, but also shine some light on designing the unique nanomaterials for various energy devices. are successfully developed by a scalable and low‐cost method. After being encapsulated with the homogeneous carbon layer, the Si/C nanocomposite anodes achieve outstanding lithium‐storage properties with good rate capacity and remarkable cycling stability, which illustrates that the unique nanomaterial is a promising candidate material for the next‐generation lithium‐ion batteries.
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abstractConstructing unique mesoporous 2D Si nanostructures to shorten the lithium‐ion diffusion pathway, facilitate interfacial charge transfer, and enlarge the electrode–electrolyte interface offers exciting opportunities in future high‐performance lithium‐ion batteries. However, simultaneous realization of 2D and mesoporous structures for Si material is quite difficult due to its non‐van der Waals structure. Here, the coexistence of both mesoporous and 2D ultrathin nanosheets in the Si anodes and considerably high surface area (381.6 m g) are successfully achieved by a scalable and cost‐efficient method. After being encapsulated with the homogeneous carbon layer, the Si/C nanocomposite anodes achieve outstanding reversible capacity, high cycle stability, and excellent rate capability. In particular, the reversible capacity reaches 1072.2 mA h g at 4 A g even after 500 cycles. The obvious enhancements can be attributed to the synergistic effect between the unique 2D mesoporous nanostructure and carbon capsulation. Furthermore, full‐cell evaluations indicate that the unique Si/C nanostructures have a great potential in the next‐generation lithium‐ion battery. These findings not only greatly improve the electrochemical performances of Si anode, but also shine some light on designing the unique nanomaterials for various energy devices. are successfully developed by a scalable and low‐cost method. After being encapsulated with the homogeneous carbon layer, the Si/C nanocomposite anodes achieve outstanding lithium‐storage properties with good rate capacity and remarkable cycling stability, which illustrates that the unique nanomaterial is a promising candidate material for the next‐generation lithium‐ion batteries.
doi10.1002/smll.201703361
orcididhttp://orcid.org/0000-0002-0671-4974
pages1-11
date2018-03