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A Flexible Film with SnS2 Nanoparticles Chemically Anchored on 3D‐Graphene Framework for High Areal Density and High Rate Sodium Storage

Journal Article


Abstract


  • © 2020 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim The design and construction of flexible electrodes that can function at high rates and high areal capacities are essential regarding the practical application of flexible sodium-ion batteries (SIBs) and other energy storage devices, which remains significantly challenging by far. Herein, a flexible and 3D porous graphene nanosheet/SnS2 (3D-GNS/SnS2) film is reported as a high-performance SIB electrode. In this hybrid film, the GNS/SnS2 microblocks serve as pillars to assemble into a 3D porous and interconnected framework, enabling fast electron/ion transport; while the GNS bridges the GNS/SnS2 microblocks into a flexible framework to provide satisfactorily mechanical strength and long-range conductivity. Moreover, the SnS2 nanocrystals, which chemically bond with GNS, provide sufficient active sites for Na storage and ensure the cycling stability. Consequently, this flexible 3D-GNS/SnS2 film exhibits excellent Na-storage performances, especially in terms of high areal capacity (2.45 mAh cm−2) and high rates with superior stability (385 mAh g−1 at 1.0 A g−1 over 1000 cycles with ≈100% retention). A flexible SIB full cell using this anode exhibits high and stable performance under various bending situations. Thus, this work provide a feasible route to prepare flexible electrodes with high practical viability for not only SIBs but also other energy storage devices.

Authors


  •   Sang, Zhiyuan (external author)
  •   Yan, Xiao (external author)
  •   Su, Dong (external author)
  •   Ji, Huiming (external author)
  •   Wang, Sihui (external author)
  •   Dou, Shi Xue
  •   Liang, Ji

Publication Date


  • 2020

Published In


Citation


  • Sang, Z., Yan, X., Su, D., Ji, H., Wang, S., Dou, S. & Liang, J. (2020). A Flexible Film with SnS2 Nanoparticles Chemically Anchored on 3D‐Graphene Framework for High Areal Density and High Rate Sodium Storage. Small,

Scopus Eid


  • 2-s2.0-85085039514

Ro Metadata Url


  • http://ro.uow.edu.au/aiimpapers/4169

Place Of Publication


  • Germany

Abstract


  • © 2020 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim The design and construction of flexible electrodes that can function at high rates and high areal capacities are essential regarding the practical application of flexible sodium-ion batteries (SIBs) and other energy storage devices, which remains significantly challenging by far. Herein, a flexible and 3D porous graphene nanosheet/SnS2 (3D-GNS/SnS2) film is reported as a high-performance SIB electrode. In this hybrid film, the GNS/SnS2 microblocks serve as pillars to assemble into a 3D porous and interconnected framework, enabling fast electron/ion transport; while the GNS bridges the GNS/SnS2 microblocks into a flexible framework to provide satisfactorily mechanical strength and long-range conductivity. Moreover, the SnS2 nanocrystals, which chemically bond with GNS, provide sufficient active sites for Na storage and ensure the cycling stability. Consequently, this flexible 3D-GNS/SnS2 film exhibits excellent Na-storage performances, especially in terms of high areal capacity (2.45 mAh cm−2) and high rates with superior stability (385 mAh g−1 at 1.0 A g−1 over 1000 cycles with ≈100% retention). A flexible SIB full cell using this anode exhibits high and stable performance under various bending situations. Thus, this work provide a feasible route to prepare flexible electrodes with high practical viability for not only SIBs but also other energy storage devices.

Authors


  •   Sang, Zhiyuan (external author)
  •   Yan, Xiao (external author)
  •   Su, Dong (external author)
  •   Ji, Huiming (external author)
  •   Wang, Sihui (external author)
  •   Dou, Shi Xue
  •   Liang, Ji

Publication Date


  • 2020

Published In


Citation


  • Sang, Z., Yan, X., Su, D., Ji, H., Wang, S., Dou, S. & Liang, J. (2020). A Flexible Film with SnS2 Nanoparticles Chemically Anchored on 3D‐Graphene Framework for High Areal Density and High Rate Sodium Storage. Small,

Scopus Eid


  • 2-s2.0-85085039514

Ro Metadata Url


  • http://ro.uow.edu.au/aiimpapers/4169

Place Of Publication


  • Germany