Silk-regulated hierarchical hollow magnetite/carbon nanocomposite spheroids for lithium-ion battery anodes

Weiqin Sheng; Guobin Zhu; David L. Kaplan; Chuanbao Cao; Hesun Zhu; Qiang Lu

doi:10.1088/0957-4484/26/11/115603

Silk-regulated hierarchical hollow magnetite/carbon nanocomposite spheroids for lithium-ion battery anodes

Weiqin Sheng, Guobin Zhu, David L. Kaplan, Chuanbao Cao, Hesun Zhu, Qiang Lu

School of Material Science and Engineering

Research output: Contribution to journal › Article › peer-review

16 Citations (Scopus)

Abstract

Hierarchical olive-like structured carbon-Fe_3O₄ nanocomposite particles composed of a hollow interior and a carbon coated surface are prepared by a facile, silk protein-assisted hydrothermal method. Silk nanofibers as templates and carbon precursors first regulate the formation of hollow Fe_2O₃ microspheres and then they are converted into carbon by a reduction process into Fe_3O₄. This process significantly simplifies the fabrication and carbon coating processes to form complex hollow structures. When tested as anode materials for lithium-ion batteries, these hollow carbon-coated particles exhibit high capacity (900 mAh g^-1), excellent cycle stability (180 cycles) and rate performance due to their unique hierarchical hollow structure and carbon coating.

Original language	English
Article number	115603
Journal	Nanotechnology
Volume	26
Issue number	11
DOIs	https://doi.org/10.1088/0957-4484/26/11/115603
Publication status	Published - 20 Mar 2015

Keywords

F4, energy storage, anode material
olive-like hollow structures
silk nanofiber

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1088/0957-4484/26/11/115603

Cite this

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title = "Silk-regulated hierarchical hollow magnetite/carbon nanocomposite spheroids for lithium-ion battery anodes",

abstract = "Hierarchical olive-like structured carbon-Fe3O4 nanocomposite particles composed of a hollow interior and a carbon coated surface are prepared by a facile, silk protein-assisted hydrothermal method. Silk nanofibers as templates and carbon precursors first regulate the formation of hollow Fe2O3 microspheres and then they are converted into carbon by a reduction process into Fe3O4. This process significantly simplifies the fabrication and carbon coating processes to form complex hollow structures. When tested as anode materials for lithium-ion batteries, these hollow carbon-coated particles exhibit high capacity (900 mAh g-1), excellent cycle stability (180 cycles) and rate performance due to their unique hierarchical hollow structure and carbon coating.",

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AU - Sheng, Weiqin

AU - Zhu, Guobin

AU - Kaplan, David L.

AU - Cao, Chuanbao

AU - Zhu, Hesun

AU - Lu, Qiang

PY - 2015/3/20

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Silk-regulated hierarchical hollow magnetite/carbon nanocomposite spheroids for lithium-ion battery anodes

Abstract

Keywords

UN SDGs

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