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Flexible free-standing sulfurized polyacrylonitrile electrode for stable Li/Na storage

Journal Article


Abstract


  • © 2019 Elsevier Ltd Flexible lithium sulfur batteries are promising power sources for the next generation wearable electronics, due to their high energy density and low cost. Here, we demonstrate a metal current collector-free, binder-free, flexible sulfurized polyacrylonitrile film electrode with hollow tubular nanofibers (H-SPAN), which is fabricated via coaxial electrospinning and a simple heat treatment. The all-fibrous films H-SPAN not only provides three-dimensional continuous electron and ion transport paths, but also suppresses the shuttle effect, contributing to better redox kinetics, cycling performance, and flexibility. The H-SPAN film electrode delivers a high specific lithium storage capacity of 1250 mAh g−1sulfur or 514.75 mAh g−1electrode at 0.1C with stable cycling over 300 cycles. Additionally, when H-SPAN is applied as a cathode for room temperature Na–S batteries, it also exhibits superb capacity and cycling stability (717 mAh g−1sulfur or 295.2 mAh g−1electrode at 0.1C after 200 cycles). The working mechanism of H-SPAN is well elucidated by ex situ Raman spectroscopy and ex situ X-ray Photoelectron Spectroscopy (XPS). The excellent flexibility of the H-SPAN film electrode lends itself well to potential applications in wearable electronic devices.

Authors


  •   Huang, Xinyue (external author)
  •   Liu, Jun (external author)
  •   Huang, Zexi (external author)
  •   Ke, Xi (external author)
  •   Liu, Liying (external author)
  •   Wang, Naiguang (external author)
  •   Liu, Jianping (external author)
  •   Guo, Zaiping
  •   Yang, Yong (external author)
  •   Shi, Zhicong (external author)

Publication Date


  • 2020

Citation


  • Huang, X., Liu, J., Huang, Z., Ke, X., Liu, L., Wang, N., Liu, J., Guo, Z., Yang, Y. & Shi, Z. (2020). Flexible free-standing sulfurized polyacrylonitrile electrode for stable Li/Na storage. Electrochimica Acta, 333

Scopus Eid


  • 2-s2.0-85076681251

Volume


  • 333

Place Of Publication


  • United Kingdom

Abstract


  • © 2019 Elsevier Ltd Flexible lithium sulfur batteries are promising power sources for the next generation wearable electronics, due to their high energy density and low cost. Here, we demonstrate a metal current collector-free, binder-free, flexible sulfurized polyacrylonitrile film electrode with hollow tubular nanofibers (H-SPAN), which is fabricated via coaxial electrospinning and a simple heat treatment. The all-fibrous films H-SPAN not only provides three-dimensional continuous electron and ion transport paths, but also suppresses the shuttle effect, contributing to better redox kinetics, cycling performance, and flexibility. The H-SPAN film electrode delivers a high specific lithium storage capacity of 1250 mAh g−1sulfur or 514.75 mAh g−1electrode at 0.1C with stable cycling over 300 cycles. Additionally, when H-SPAN is applied as a cathode for room temperature Na–S batteries, it also exhibits superb capacity and cycling stability (717 mAh g−1sulfur or 295.2 mAh g−1electrode at 0.1C after 200 cycles). The working mechanism of H-SPAN is well elucidated by ex situ Raman spectroscopy and ex situ X-ray Photoelectron Spectroscopy (XPS). The excellent flexibility of the H-SPAN film electrode lends itself well to potential applications in wearable electronic devices.

Authors


  •   Huang, Xinyue (external author)
  •   Liu, Jun (external author)
  •   Huang, Zexi (external author)
  •   Ke, Xi (external author)
  •   Liu, Liying (external author)
  •   Wang, Naiguang (external author)
  •   Liu, Jianping (external author)
  •   Guo, Zaiping
  •   Yang, Yong (external author)
  •   Shi, Zhicong (external author)

Publication Date


  • 2020

Citation


  • Huang, X., Liu, J., Huang, Z., Ke, X., Liu, L., Wang, N., Liu, J., Guo, Z., Yang, Y. & Shi, Z. (2020). Flexible free-standing sulfurized polyacrylonitrile electrode for stable Li/Na storage. Electrochimica Acta, 333

Scopus Eid


  • 2-s2.0-85076681251

Volume


  • 333

Place Of Publication


  • United Kingdom