Ultrathin nanoporous Fe3O4–carbon nanosheets with enhanced supercapacitor performance

Dequan Liu; Xi Wang; Xuebin Wang; Wei Tian; Jiangwei Liu; Chunyi Zhi; Deyan He; Yoshio Bando; Dmitri Golberg

doi:10.1039/C2TA01035F

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Ultrathin nanoporous Fe₃O₄–carbon nanosheets with enhanced supercapacitor performance†

Dequan Liu,^ab Xi Wang,*^a Xuebin Wang,^a Wei Tian,^a Jiangwei Liu,^a Chunyi Zhi,^c Deyan He,^b Yoshio Bando^a and Dmitri Golberg*^a

Author affiliations

* Corresponding authors

^a International Center for Materials Nanoarchitectonics (MANA), National Institute for Materials Science (NIMS), Namiki 1-1, Tsukuba, Ibaraki, Japan
E-mail: WANG.Xi2@nims.go.jp, GOLBERG.Dmitri@nims.go.jp

^b School of Physical Science and Technology, Key Laboratory for Magnetism and Magnetic Materials of the Ministry of Education, Lanzhou University, Lanzhou, China

^c Department of Physics and Materials Science, City University of Hong Kong, Tat Chee Avenue,, Kowloon, Hong Kong, China

Abstract

Ultrathin nanoporous Fe₃O₄–carbon nanosheets (NNSs) with a high surface area of 229 m² g⁻¹ were synthesized by using a two-step method. The high capacitance of 163.4 F g⁻¹ was achieved by utilizing such NNSs electrodes due to their unique feature, which is much higher than those of previously reported Fe₃O₄ hybrid products. The interconnected porous framework surface greatly enhanced charge transfer due to larger interfaces, and carbon nanopillars between nanosheet layers brought high conductivity.

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Supplementary files

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Article information

DOI: https://doi.org/10.1039/C2TA01035F
Article type: Communication
Submitted: 08 Nov 2012
Accepted: 10 Dec 2012
First published: 11 Dec 2012

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J. Mater. Chem. A, 2013,1, 1952-1955

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Ultrathin nanoporous Fe₃O₄–carbon nanosheets with enhanced supercapacitor performance

D. Liu, X. Wang, X. Wang, W. Tian, J. Liu, C. Zhi, D. He, Y. Bando and D. Golberg, J. Mater. Chem. A, 2013, 1, 1952 DOI: 10.1039/C2TA01035F

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Journal of Materials Chemistry A