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3D Graphene Networks Encapsulated with Ultrathin SnS Nanosheets@Hollow Mesoporous Carbon Spheres Nanocomposite with Pseudocapacitance‐Enhanced Lithium and Sodium Storage Kinetics

The lithium and sodium storage performances of SnS anode often undergo rapid capacity decay and poor rate capability owing to its huge volume fluctuation and structural instability upon the repeated charge/discharge processes. Herein, a novel and versatile method is described for in situ synthesis o... Full description

Journal Title: Small April 2019, Vol.15(14), pp.n/a-n/a
Main Author: Zhang, Shipeng
Other Authors: Wang, Gang , Zhang, Zelei , Wang, Beibei , Bai, Jintao , Wang, Hui
Format: Electronic Article Electronic Article
Language:
Subjects:
Sns
ID: ISSN: 1613-6810 ; E-ISSN: 1613-6829 ; DOI: 10.1002/smll.201900565
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recordid: wj10.1002/smll.201900565
title: 3D Graphene Networks Encapsulated with Ultrathin SnS Nanosheets@Hollow Mesoporous Carbon Spheres Nanocomposite with Pseudocapacitance‐Enhanced Lithium and Sodium Storage Kinetics
format: Article
creator:
  • Zhang, Shipeng
  • Wang, Gang
  • Zhang, Zelei
  • Wang, Beibei
  • Bai, Jintao
  • Wang, Hui
subjects:
  • Hollow Mesoporous Carbon
  • Lithium Storage
  • Reduced Graphene Oxide
  • Sns
  • Sodium Storage
ispartof: Small, April 2019, Vol.15(14), pp.n/a-n/a
description: The lithium and sodium storage performances of SnS anode often undergo rapid capacity decay and poor rate capability owing to its huge volume fluctuation and structural instability upon the repeated charge/discharge processes. Herein, a novel and versatile method is described for in situ synthesis of ultrathin SnS nanosheets inside and outside hollow mesoporous carbon spheres crosslinked reduced graphene oxide networks. Thus, 3D honeycomb‐like network architecture is formed. Systematic electrochemical studies manifest that this nanocomposite as anode material for lithium‐ion batteries delivers a high charge capacity of 1027 mAh g at 0.2 A g after 100 cycles. Meanwhile, the as‐developed nanocomposite still retains a charge capacity of 524 mAh g at 0.1 A g after 100 cycles for sodium‐ion batteries. In addition, the electrochemical kinetics analysis verifies the basic principles of enhanced rate capacity. The appealing electrochemical performance for both lithium‐ion batteries and sodium‐ion batteries can be mainly related to the porous 3D interconnected architecture, in which the nanoscale SnS nanosheets not only offer decreased ion diffusion pathways and fast Li/Na transport kinetics, but also the 3D interconnected conductive networks constructed from the hollow mesoporous carbon spheres and reduced graphene oxide enhance the conductivity and ensure the structural integrity. are first located both inside and outside hollow mesoporous carbon spheres and further homogeneously encapsulated in the reduced graphene oxide, is prepared and shows pseudocapacitance‐enhanced lithium and sodium storage kinetics.
language:
source:
identifier: ISSN: 1613-6810 ; E-ISSN: 1613-6829 ; DOI: 10.1002/smll.201900565
fulltext: fulltext
issn:
  • 1613-6810
  • 16136810
  • 1613-6829
  • 16136829
url: Link


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title3D Graphene Networks Encapsulated with Ultrathin SnS Nanosheets@Hollow Mesoporous Carbon Spheres Nanocomposite with Pseudocapacitance‐Enhanced Lithium and Sodium Storage Kinetics
creatorZhang, Shipeng ; Wang, Gang ; Zhang, Zelei ; Wang, Beibei ; Bai, Jintao ; Wang, Hui
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subjectHollow Mesoporous Carbon ; Lithium Storage ; Reduced Graphene Oxide ; Sns ; Sodium Storage
descriptionThe lithium and sodium storage performances of SnS anode often undergo rapid capacity decay and poor rate capability owing to its huge volume fluctuation and structural instability upon the repeated charge/discharge processes. Herein, a novel and versatile method is described for in situ synthesis of ultrathin SnS nanosheets inside and outside hollow mesoporous carbon spheres crosslinked reduced graphene oxide networks. Thus, 3D honeycomb‐like network architecture is formed. Systematic electrochemical studies manifest that this nanocomposite as anode material for lithium‐ion batteries delivers a high charge capacity of 1027 mAh g at 0.2 A g after 100 cycles. Meanwhile, the as‐developed nanocomposite still retains a charge capacity of 524 mAh g at 0.1 A g after 100 cycles for sodium‐ion batteries. In addition, the electrochemical kinetics analysis verifies the basic principles of enhanced rate capacity. The appealing electrochemical performance for both lithium‐ion batteries and sodium‐ion batteries can be mainly related to the porous 3D interconnected architecture, in which the nanoscale SnS nanosheets not only offer decreased ion diffusion pathways and fast Li/Na transport kinetics, but also the 3D interconnected conductive networks constructed from the hollow mesoporous carbon spheres and reduced graphene oxide enhance the conductivity and ensure the structural integrity. are first located both inside and outside hollow mesoporous carbon spheres and further homogeneously encapsulated in the reduced graphene oxide, is prepared and shows pseudocapacitance‐enhanced lithium and sodium storage kinetics.
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title3D Graphene Networks Encapsulated with Ultrathin SnS Nanosheets@Hollow Mesoporous Carbon Spheres Nanocomposite with Pseudocapacitance‐Enhanced Lithium and Sodium Storage Kinetics
descriptionThe lithium and sodium storage performances of SnS anode often undergo rapid capacity decay and poor rate capability owing to its huge volume fluctuation and structural instability upon the repeated charge/discharge processes. Herein, a novel and versatile method is described for in situ synthesis of ultrathin SnS nanosheets inside and outside hollow mesoporous carbon spheres crosslinked reduced graphene oxide networks. Thus, 3D honeycomb‐like network architecture is formed. Systematic electrochemical studies manifest that this nanocomposite as anode material for lithium‐ion batteries delivers a high charge capacity of 1027 mAh g at 0.2 A g after 100 cycles. Meanwhile, the as‐developed nanocomposite still retains a charge capacity of 524 mAh g at 0.1 A g after 100 cycles for sodium‐ion batteries. In addition, the electrochemical kinetics analysis verifies the basic principles of enhanced rate capacity. The appealing electrochemical performance for both lithium‐ion batteries and sodium‐ion batteries can be mainly related to the porous 3D interconnected architecture, in which the nanoscale SnS nanosheets not only offer decreased ion diffusion pathways and fast Li/Na transport kinetics, but also the 3D interconnected conductive networks constructed from the hollow mesoporous carbon spheres and reduced graphene oxide enhance the conductivity and ensure the structural integrity. are first located both inside and outside hollow mesoporous carbon spheres and further homogeneously encapsulated in the reduced graphene oxide, is prepared and shows pseudocapacitance‐enhanced lithium and sodium storage kinetics.
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title3D Graphene Networks Encapsulated with Ultrathin SnS Nanosheets@Hollow Mesoporous Carbon Spheres Nanocomposite with Pseudocapacitance‐Enhanced Lithium and Sodium Storage Kinetics
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abstractThe lithium and sodium storage performances of SnS anode often undergo rapid capacity decay and poor rate capability owing to its huge volume fluctuation and structural instability upon the repeated charge/discharge processes. Herein, a novel and versatile method is described for in situ synthesis of ultrathin SnS nanosheets inside and outside hollow mesoporous carbon spheres crosslinked reduced graphene oxide networks. Thus, 3D honeycomb‐like network architecture is formed. Systematic electrochemical studies manifest that this nanocomposite as anode material for lithium‐ion batteries delivers a high charge capacity of 1027 mAh g at 0.2 A g after 100 cycles. Meanwhile, the as‐developed nanocomposite still retains a charge capacity of 524 mAh g at 0.1 A g after 100 cycles for sodium‐ion batteries. In addition, the electrochemical kinetics analysis verifies the basic principles of enhanced rate capacity. The appealing electrochemical performance for both lithium‐ion batteries and sodium‐ion batteries can be mainly related to the porous 3D interconnected architecture, in which the nanoscale SnS nanosheets not only offer decreased ion diffusion pathways and fast Li/Na transport kinetics, but also the 3D interconnected conductive networks constructed from the hollow mesoporous carbon spheres and reduced graphene oxide enhance the conductivity and ensure the structural integrity. are first located both inside and outside hollow mesoporous carbon spheres and further homogeneously encapsulated in the reduced graphene oxide, is prepared and shows pseudocapacitance‐enhanced lithium and sodium storage kinetics.
doi10.1002/smll.201900565
pages1-12
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date2019-04