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Biochemistry-enabled 3D foams for ultrafast battery cathodes

Journal Article


Abstract


  • Metal vanadium phosphates (MVP), particularly Li3V2(PO4)3 (LVP) and Na3V2(PO4)3 (NVP), are regarded as the next-generation cathode materials in lithium/sodium ion batteries. These materials possess desirable properties such as high stability, theoretical capacity, and operating voltages. Yet, low electrical/ionic conductivities of LVP and NVP have limited their applications in demanding devices such as electric vehicles. In this work, a novel synthesis route for the preparation of LVP/NVP micro/mesoporous 3D foams via assembly of elastin-like polypeptides is demonstrated. The as-synthesized MVP 3D foams consist of microporous networks of mesoporous nanofibers, where the surfaces of individual fibers are covered with MVP nanocrystallites. TEM images further reveal that LVP/NVP nanoparticles are about 100-200 nm in diameter, with each particle enveloped by a 5 nm thick carbon shell. The MVP 3D foams prepared in this work exhibit ultrafast rate capabilities (79 mA h g-1 at 100C and 66 mA h g-1 at 200C for LVP 3D foams; 73 mA h g-1 at 100C and 51 mA h g-1 at 200C for NVP 3D foams) and excellent cycle performance (almost 100% performance retention after 1000 cycles at 100C); their properties are far superior compared to current state-of-the-art active materials.

UOW Authors


  •   Zhou, Yanping (external author)
  •   Rui, Xianhong (external author)
  •   Sun, Wenping
  •   Xu, Zhichuan (external author)
  •   Zhou, Yan (external author)
  •   Ng, Wun Jern (external author)
  •   Yan, QingYu (external author)
  •   Fong, Eileen (external author)

Publication Date


  • 2015

Citation


  • Zhou, Y., Rui, X., Sun, W., Xu, Z., Zhou, Y., Ng, W. Jem., Yan, Q. & Fong, E. (2015). Biochemistry-enabled 3D foams for ultrafast battery cathodes. ACS Nano, 9 (4), 4628-4635.

Scopus Eid


  • 2-s2.0-84928975754

Ro Metadata Url


  • http://ro.uow.edu.au/aiimpapers/1813

Has Global Citation Frequency


Number Of Pages


  • 7

Start Page


  • 4628

End Page


  • 4635

Volume


  • 9

Issue


  • 4

Place Of Publication


  • United States

Abstract


  • Metal vanadium phosphates (MVP), particularly Li3V2(PO4)3 (LVP) and Na3V2(PO4)3 (NVP), are regarded as the next-generation cathode materials in lithium/sodium ion batteries. These materials possess desirable properties such as high stability, theoretical capacity, and operating voltages. Yet, low electrical/ionic conductivities of LVP and NVP have limited their applications in demanding devices such as electric vehicles. In this work, a novel synthesis route for the preparation of LVP/NVP micro/mesoporous 3D foams via assembly of elastin-like polypeptides is demonstrated. The as-synthesized MVP 3D foams consist of microporous networks of mesoporous nanofibers, where the surfaces of individual fibers are covered with MVP nanocrystallites. TEM images further reveal that LVP/NVP nanoparticles are about 100-200 nm in diameter, with each particle enveloped by a 5 nm thick carbon shell. The MVP 3D foams prepared in this work exhibit ultrafast rate capabilities (79 mA h g-1 at 100C and 66 mA h g-1 at 200C for LVP 3D foams; 73 mA h g-1 at 100C and 51 mA h g-1 at 200C for NVP 3D foams) and excellent cycle performance (almost 100% performance retention after 1000 cycles at 100C); their properties are far superior compared to current state-of-the-art active materials.

UOW Authors


  •   Zhou, Yanping (external author)
  •   Rui, Xianhong (external author)
  •   Sun, Wenping
  •   Xu, Zhichuan (external author)
  •   Zhou, Yan (external author)
  •   Ng, Wun Jern (external author)
  •   Yan, QingYu (external author)
  •   Fong, Eileen (external author)

Publication Date


  • 2015

Citation


  • Zhou, Y., Rui, X., Sun, W., Xu, Z., Zhou, Y., Ng, W. Jem., Yan, Q. & Fong, E. (2015). Biochemistry-enabled 3D foams for ultrafast battery cathodes. ACS Nano, 9 (4), 4628-4635.

Scopus Eid


  • 2-s2.0-84928975754

Ro Metadata Url


  • http://ro.uow.edu.au/aiimpapers/1813

Has Global Citation Frequency


Number Of Pages


  • 7

Start Page


  • 4628

End Page


  • 4635

Volume


  • 9

Issue


  • 4

Place Of Publication


  • United States