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Novel Carbon‐Encapsulated Porous SnO2 Anode for Lithium‐Ion Batteries with Much Improved Cyclic Stability

Porous SnO submicrocubes (SMCs) are synthesized by annealing and HNO etching of CoSn(OH) SMCs. Bare SnO SMCs, as well as bare commercial SnO nanoparticles (NPs), show very high initial discharge capacity when used as anode material for lithium‐ion batteries. However, during the following cycles most... Full description

Journal Title: Small April 2016, Vol.12(14), pp.1945-1955
Main Author: Huang, Bin
Other Authors: Li, Xinhai , Pei, Yi , Li, Shuang , Cao, Xi , Massé, Robert C. , Cao, Guozhong
Format: Electronic Article Electronic Article
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ID: ISSN: 1613-6810 ; E-ISSN: 1613-6829 ; DOI: 10.1002/smll.201503419
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recordid: wj10.1002/smll.201503419
title: Novel Carbon‐Encapsulated Porous SnO2 Anode for Lithium‐Ion Batteries with Much Improved Cyclic Stability
format: Article
creator:
  • Huang, Bin
  • Li, Xinhai
  • Pei, Yi
  • Li, Shuang
  • Cao, Xi
  • Massé, Robert C.
  • Cao, Guozhong
subjects:
  • Carbon Encapsulated
  • Lithium‐Ion Batteries
  • Porous Materials
  • Tin Oxide
  • Anode Materials
ispartof: Small, April 2016, Vol.12(14), pp.1945-1955
description: Porous SnO submicrocubes (SMCs) are synthesized by annealing and HNO etching of CoSn(OH) SMCs. Bare SnO SMCs, as well as bare commercial SnO nanoparticles (NPs), show very high initial discharge capacity when used as anode material for lithium‐ion batteries. However, during the following cycles most of the Li ions previously inserted cannot be extracted, resulting in considerable irreversibility. Porous SnO cubes have been proven to possess better electrochemical performance than the dense nanoparticles. After being encapsulated by carbon shell, the obtained yolk–shell SnO SMCs@C exhibits significantly enhanced reversibility for lithium‐ions storage. The reversibility of the conversion between SnO and Sn, which is largely responsible for the enhanced capacity, has been discussed. The porous SnO SMCs@C shows much increased capacity and cycling stability, demonstrating that the porous SnO core is essential for better lithium‐ion storage performance. The strategy introduced in this paper can be used as a versatile way to fabrication of various metal‐oxide‐based composites. are well designed and successfully synthesized. The rapid performance degradation caused by volume changes during lithiation/delithiation for SnO is demonstrated to be well overcome by this unique microstructure. The porosity of the core, the void space between core and shell, and the conductive carbon shell are essential for the significantly enhanced electrochemical properties.
language:
source:
identifier: ISSN: 1613-6810 ; E-ISSN: 1613-6829 ; DOI: 10.1002/smll.201503419
fulltext: fulltext
issn:
  • 1613-6810
  • 16136810
  • 1613-6829
  • 16136829
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titleNovel Carbon‐Encapsulated Porous SnO2 Anode for Lithium‐Ion Batteries with Much Improved Cyclic Stability
creatorHuang, Bin ; Li, Xinhai ; Pei, Yi ; Li, Shuang ; Cao, Xi ; Massé, Robert C. ; Cao, Guozhong
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subjectCarbon Encapsulated ; Lithium‐Ion Batteries ; Porous Materials ; Tin Oxide ; Anode Materials
descriptionPorous SnO submicrocubes (SMCs) are synthesized by annealing and HNO etching of CoSn(OH) SMCs. Bare SnO SMCs, as well as bare commercial SnO nanoparticles (NPs), show very high initial discharge capacity when used as anode material for lithium‐ion batteries. However, during the following cycles most of the Li ions previously inserted cannot be extracted, resulting in considerable irreversibility. Porous SnO cubes have been proven to possess better electrochemical performance than the dense nanoparticles. After being encapsulated by carbon shell, the obtained yolk–shell SnO SMCs@C exhibits significantly enhanced reversibility for lithium‐ions storage. The reversibility of the conversion between SnO and Sn, which is largely responsible for the enhanced capacity, has been discussed. The porous SnO SMCs@C shows much increased capacity and cycling stability, demonstrating that the porous SnO core is essential for better lithium‐ion storage performance. The strategy introduced in this paper can be used as a versatile way to fabrication of various metal‐oxide‐based composites. are well designed and successfully synthesized. The rapid performance degradation caused by volume changes during lithiation/delithiation for SnO is demonstrated to be well overcome by this unique microstructure. The porosity of the core, the void space between core and shell, and the conductive carbon shell are essential for the significantly enhanced electrochemical properties.
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descriptionPorous SnO submicrocubes (SMCs) are synthesized by annealing and HNO etching of CoSn(OH) SMCs. Bare SnO SMCs, as well as bare commercial SnO nanoparticles (NPs), show very high initial discharge capacity when used as anode material for lithium‐ion batteries. However, during the following cycles most of the Li ions previously inserted cannot be extracted, resulting in considerable irreversibility. Porous SnO cubes have been proven to possess better electrochemical performance than the dense nanoparticles. After being encapsulated by carbon shell, the obtained yolk–shell SnO SMCs@C exhibits significantly enhanced reversibility for lithium‐ions storage. The reversibility of the conversion between SnO and Sn, which is largely responsible for the enhanced capacity, has been discussed. The porous SnO SMCs@C shows much increased capacity and cycling stability, demonstrating that the porous SnO core is essential for better lithium‐ion storage performance. The strategy introduced in this paper can be used as a versatile way to fabrication of various metal‐oxide‐based composites. are well designed and successfully synthesized. The rapid performance degradation caused by volume changes during lithiation/delithiation for SnO is demonstrated to be well overcome by this unique microstructure. The porosity of the core, the void space between core and shell, and the conductive carbon shell are essential for the significantly enhanced electrochemical properties.
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abstractPorous SnO submicrocubes (SMCs) are synthesized by annealing and HNO etching of CoSn(OH) SMCs. Bare SnO SMCs, as well as bare commercial SnO nanoparticles (NPs), show very high initial discharge capacity when used as anode material for lithium‐ion batteries. However, during the following cycles most of the Li ions previously inserted cannot be extracted, resulting in considerable irreversibility. Porous SnO cubes have been proven to possess better electrochemical performance than the dense nanoparticles. After being encapsulated by carbon shell, the obtained yolk–shell SnO SMCs@C exhibits significantly enhanced reversibility for lithium‐ions storage. The reversibility of the conversion between SnO and Sn, which is largely responsible for the enhanced capacity, has been discussed. The porous SnO SMCs@C shows much increased capacity and cycling stability, demonstrating that the porous SnO core is essential for better lithium‐ion storage performance. The strategy introduced in this paper can be used as a versatile way to fabrication of various metal‐oxide‐based composites. are well designed and successfully synthesized. The rapid performance degradation caused by volume changes during lithiation/delithiation for SnO is demonstrated to be well overcome by this unique microstructure. The porosity of the core, the void space between core and shell, and the conductive carbon shell are essential for the significantly enhanced electrochemical properties.
doi10.1002/smll.201503419
pages1945-1955
date2016-04