Hollow Fe3O4/C spheres as superior lithium storage materials

Qiumei Zhang; Zhicong Shi; Yuanfu Deng; Jun Zheng; Guichang Liu; Guohua Chen

doi:10.1016/j.jpowsour.2011.09.029

Hollow Fe₃O₄/C spheres as superior lithium storage materials

Qiumei Zhang, Zhicong Shi, Yuanfu Deng, Jun Zheng, Guichang Liu, Guohua Chen

Research output: Journal article publication › Journal article › Academic research › peer-review

114 Citations (Scopus)

Abstract

Unique hollow Fe3O4/C spheres are prepared by a simple one-pot solvothermal method, with spinel structure and 750 nm in diameter identified by X-ray diffraction (XRD), scanning electron microscopy (SEM) and transmission electron microscopy (TEM) techniques. The hollow Fe3O4/C spheres exhibit excellent cycling and rate performance as anode material for lithium ion batteries, delivering reversible specific capacities of 984 mAh g-1even after 70 cycles at 0.2 C, 620 mAh g-1at 2 C, and 460 mAh g-1at 5 C, respectively. Lithium insertion mechanisms are also proposed in terms of the ex situ XRD analysis of the electrodes after discharged and charged to certain voltages together with cyclic voltammetry (CV) and voltage profile.

Original language	English
Pages (from-to)	305-309
Number of pages	5
Journal	Journal of Power Sources
Volume	197
DOIs	https://doi.org/10.1016/j.jpowsour.2011.09.029
Publication status	Published - 1 Jan 2012
Externally published	Yes

Keywords

Anode material
High capacity
Hollow sphere
Lithium ion battery
Spinel iron oxide

ASJC Scopus subject areas

Renewable Energy, Sustainability and the Environment
Energy Engineering and Power Technology
Physical and Theoretical Chemistry
Electrical and Electronic Engineering

UN SDGs

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

More information

10.1016/j.jpowsour.2011.09.029

Cite this

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title = "Hollow Fe3O4/C spheres as superior lithium storage materials",

abstract = "Unique hollow Fe3O4/C spheres are prepared by a simple one-pot solvothermal method, with spinel structure and 750 nm in diameter identified by X-ray diffraction (XRD), scanning electron microscopy (SEM) and transmission electron microscopy (TEM) techniques. The hollow Fe3O4/C spheres exhibit excellent cycling and rate performance as anode material for lithium ion batteries, delivering reversible specific capacities of 984 mAh g-1even after 70 cycles at 0.2 C, 620 mAh g-1at 2 C, and 460 mAh g-1at 5 C, respectively. Lithium insertion mechanisms are also proposed in terms of the ex situ XRD analysis of the electrodes after discharged and charged to certain voltages together with cyclic voltammetry (CV) and voltage profile.",

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AU - Zhang, Qiumei

AU - Shi, Zhicong

AU - Deng, Yuanfu

AU - Zheng, Jun

AU - Liu, Guichang

AU - Chen, Guohua

PY - 2012/1/1

Y1 - 2012/1/1

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AB - Unique hollow Fe3O4/C spheres are prepared by a simple one-pot solvothermal method, with spinel structure and 750 nm in diameter identified by X-ray diffraction (XRD), scanning electron microscopy (SEM) and transmission electron microscopy (TEM) techniques. The hollow Fe3O4/C spheres exhibit excellent cycling and rate performance as anode material for lithium ion batteries, delivering reversible specific capacities of 984 mAh g-1even after 70 cycles at 0.2 C, 620 mAh g-1at 2 C, and 460 mAh g-1at 5 C, respectively. Lithium insertion mechanisms are also proposed in terms of the ex situ XRD analysis of the electrodes after discharged and charged to certain voltages together with cyclic voltammetry (CV) and voltage profile.

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KW - High capacity

KW - Hollow sphere

KW - Lithium ion battery

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