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Confined SnO2 quantum-dot clusters in graphene sheets as high-performance anodes for lithium-ion batteries

Journal Article


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Abstract


  • Construction of metal oxide nanoparticles as anodes is of special interest for next-generation

    lithium-ion batteries. The main challenge lies in their rapid capacity fading caused by the structural

    degradation and instability of solid-electrolyte interphase (SEI) layer during charge/discharge process.

    Herein, we address these problems by constructing a novel-structured SnO2-based anode. The novel

    structure consists of mesoporous clusters of SnO2 quantum dots (SnO2 QDs), which are wrapped

    with reduced graphene oxide (RGO) sheets. The mesopores inside the clusters provide enough room

    for the expansion and contraction of SnO2 QDs during charge/discharge process while the integral

    structure of the clusters can be maintained. The wrapping RGO sheets act as electrolyte barrier and

    conductive reinforcement. When used as an anode, the resultant composite (MQDC-SnO2/RGO) shows

    an extremely high reversible capacity of 924 mAh g−1 after 200 cycles at 100 mA g−1, superior capacity

    retention (96%), and outstanding rate performance (505 mAh g−1 after 1000 cycles at 1000 mA g−1).

    Importantly, the materials can be easily scaled up under mild conditions. Our findings pave a new way

    for the development of metal oxide towards enhanced lithium storage performance.

Authors


  •   Zhu, Chengling (external author)
  •   Zhu, Shenmin (external author)
  •   Zhang, Kai (external author)
  •   Hui, Zeyu (external author)
  •   Pan, Hui (external author)
  •   Chen, Zhixin
  •   Li, Yao (external author)
  •   Zhang, Di (external author)
  •   Wang, Dawei (external author)

Publication Date


  • 2016

Citation


  • Zhu, C., Zhu, S., Zhang, K., Hui, Z., Pan, H., Chen, Z., Li, Y., Zhang, D. & Wang, D. (2016). Confined SnO2 quantum-dot clusters in graphene sheets as high-performance anodes for lithium-ion batteries. Scientific Reports, 6 25829-1-25829-8.

Scopus Eid


  • 2-s2.0-84975257518

Ro Full-text Url


  • http://ro.uow.edu.au/cgi/viewcontent.cgi?article=6623&context=eispapers

Ro Metadata Url


  • http://ro.uow.edu.au/eispapers/5595

Has Global Citation Frequency


Start Page


  • 25829-1

End Page


  • 25829-8

Volume


  • 6

Place Of Publication


  • United Kingdom

Abstract


  • Construction of metal oxide nanoparticles as anodes is of special interest for next-generation

    lithium-ion batteries. The main challenge lies in their rapid capacity fading caused by the structural

    degradation and instability of solid-electrolyte interphase (SEI) layer during charge/discharge process.

    Herein, we address these problems by constructing a novel-structured SnO2-based anode. The novel

    structure consists of mesoporous clusters of SnO2 quantum dots (SnO2 QDs), which are wrapped

    with reduced graphene oxide (RGO) sheets. The mesopores inside the clusters provide enough room

    for the expansion and contraction of SnO2 QDs during charge/discharge process while the integral

    structure of the clusters can be maintained. The wrapping RGO sheets act as electrolyte barrier and

    conductive reinforcement. When used as an anode, the resultant composite (MQDC-SnO2/RGO) shows

    an extremely high reversible capacity of 924 mAh g−1 after 200 cycles at 100 mA g−1, superior capacity

    retention (96%), and outstanding rate performance (505 mAh g−1 after 1000 cycles at 1000 mA g−1).

    Importantly, the materials can be easily scaled up under mild conditions. Our findings pave a new way

    for the development of metal oxide towards enhanced lithium storage performance.

Authors


  •   Zhu, Chengling (external author)
  •   Zhu, Shenmin (external author)
  •   Zhang, Kai (external author)
  •   Hui, Zeyu (external author)
  •   Pan, Hui (external author)
  •   Chen, Zhixin
  •   Li, Yao (external author)
  •   Zhang, Di (external author)
  •   Wang, Dawei (external author)

Publication Date


  • 2016

Citation


  • Zhu, C., Zhu, S., Zhang, K., Hui, Z., Pan, H., Chen, Z., Li, Y., Zhang, D. & Wang, D. (2016). Confined SnO2 quantum-dot clusters in graphene sheets as high-performance anodes for lithium-ion batteries. Scientific Reports, 6 25829-1-25829-8.

Scopus Eid


  • 2-s2.0-84975257518

Ro Full-text Url


  • http://ro.uow.edu.au/cgi/viewcontent.cgi?article=6623&context=eispapers

Ro Metadata Url


  • http://ro.uow.edu.au/eispapers/5595

Has Global Citation Frequency


Start Page


  • 25829-1

End Page


  • 25829-8

Volume


  • 6

Place Of Publication


  • United Kingdom