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Integrated intercalation-based and interfacial sodium storage in graphene-wrapped porous Li4Ti5O12 nanofibers composite aerogel

Journal Article


Abstract


  • Sodium storage in both solid-liquid and solid-solid interfaces is expected to extend the horizon of sodium-ion batteries, leading to a new strategy for developing high-performance energy-storage materials. Here, a novel composite aerogel with porous Li4Ti5O12 (PLTO) nanofibers confined in a highly conductive 3D-interconnected graphene framework (G-PLTO) is designed and fabricated for Na storage. A high capacity of 195 mA h g-1 at 0.2 C and super-long cycle life up to 12 000 cycles are attained. Electrochemical analysis shows that the intercalation-based and interfacial Na storage behaviors take effect simultaneously in the G-PLTO composite aerogel. An integrated Na storage mechanism is proposed. This study ascribes the excellent performance to the unique structure, which not only offers short pathways for Na+ diffusion and conductive networks for electron transport, but also guarantees plenty of PLTO-electrolyte and PLTO-graphene interfacial sites for Na+ adsorption.

Authors


  •   Chen, Chaoji (external author)
  •   Xu, Henghui (external author)
  •   Zhou, Tengfei
  •   Guo, Zaiping
  •   Chen, Lineng (external author)
  •   Yan, Mengyu (external author)
  •   Hu, Pei (external author)
  •   Cheng, Shijie (external author)
  •   Huang, Yunhui (external author)
  •   Xie, Jia (external author)

Publication Date


  • 2016

Citation


  • Chen, C., Xu, H., Zhou, T., Guo, Z., Chen, L., Yan, M., Mai, L., Hu, P., Cheng, S., Huang, Y. & Xie, J. (2016). Integrated intercalation-based and interfacial sodium storage in graphene-wrapped porous Li4Ti5O12 nanofibers composite aerogel. Advanced Energy Materials, 6 1600322-1-1600322-8.

Scopus Eid


  • 2-s2.0-85027954088

Ro Metadata Url


  • http://ro.uow.edu.au/eispapers/6062

Has Global Citation Frequency


Start Page


  • 1600322-1

End Page


  • 1600322-8

Volume


  • 6

Place Of Publication


  • Germany

Abstract


  • Sodium storage in both solid-liquid and solid-solid interfaces is expected to extend the horizon of sodium-ion batteries, leading to a new strategy for developing high-performance energy-storage materials. Here, a novel composite aerogel with porous Li4Ti5O12 (PLTO) nanofibers confined in a highly conductive 3D-interconnected graphene framework (G-PLTO) is designed and fabricated for Na storage. A high capacity of 195 mA h g-1 at 0.2 C and super-long cycle life up to 12 000 cycles are attained. Electrochemical analysis shows that the intercalation-based and interfacial Na storage behaviors take effect simultaneously in the G-PLTO composite aerogel. An integrated Na storage mechanism is proposed. This study ascribes the excellent performance to the unique structure, which not only offers short pathways for Na+ diffusion and conductive networks for electron transport, but also guarantees plenty of PLTO-electrolyte and PLTO-graphene interfacial sites for Na+ adsorption.

Authors


  •   Chen, Chaoji (external author)
  •   Xu, Henghui (external author)
  •   Zhou, Tengfei
  •   Guo, Zaiping
  •   Chen, Lineng (external author)
  •   Yan, Mengyu (external author)
  •   Hu, Pei (external author)
  •   Cheng, Shijie (external author)
  •   Huang, Yunhui (external author)
  •   Xie, Jia (external author)

Publication Date


  • 2016

Citation


  • Chen, C., Xu, H., Zhou, T., Guo, Z., Chen, L., Yan, M., Mai, L., Hu, P., Cheng, S., Huang, Y. & Xie, J. (2016). Integrated intercalation-based and interfacial sodium storage in graphene-wrapped porous Li4Ti5O12 nanofibers composite aerogel. Advanced Energy Materials, 6 1600322-1-1600322-8.

Scopus Eid


  • 2-s2.0-85027954088

Ro Metadata Url


  • http://ro.uow.edu.au/eispapers/6062

Has Global Citation Frequency


Start Page


  • 1600322-1

End Page


  • 1600322-8

Volume


  • 6

Place Of Publication


  • Germany