3D Fe3S4 flower-like microspheres: high-yield synthesis via a biomolecule-assisted solution approach, their electrical, magnetic and electrochemical hydrogen storage properties

Feng Cao; Wen Hu; Liang Zhou; Weidong Shi; Shuyan Song; Yongqian Lei; Song Wang; Hongjie Zhang

doi:10.1039/B912569H

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3D Fe₃S₄ flower-like microspheres: high-yield synthesis via a biomolecule-assisted solution approach, their electrical, magnetic and electrochemical hydrogenstorage properties†

Feng Cao,^ab Wen Hu,^ab Liang Zhou,^ab Weidong Shi,^ab Shuyan Song,^ab Yongqian Lei,^ab Song Wang^ab and Hongjie Zhang*^a

Author affiliations

* Corresponding authors

^a State Key Laboratory of Rare Earth Resource Utilizations, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, Jilin, China
E-mail: hongjie@ciac.jl.cn
Fax: +86-431-85698041
Tel: +86-431-85262127

^b Graduate School of the Chinese Academy of Sciences, Beijing, P. R. China

Abstract

Well-defined 3D Fe₃S₄ flower-like microspheres were synthesized via a simple biomolecule-assisted hydrothermal process for the first time. On the basis of a series of contrast experiments, the probable growth mechanism and fabrication process of the products were proposed. The electrical conductivity property of the as-synthesized Fe₃S₄ sample exhibited a rectifying characteristic when a forward bias was applied for the bottom-contacted device. The magnetic properties of the products were studied as well and the results demonstrated that the products presented ferromagnetic properties related to the corresponding microstructure. In addition, we first verified that the Fe₃S₄ flower-like microspheres could store hydrogen electrochemically, and a discharge capacity of 214 mA h g⁻¹ was measured without any activation under normal atmospheric conditions at room temperature.

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Supplementary files

SEM images of the products prepared at different molar ratios of Fe²⁺/L-cysteine, different reactant concentration PDF (799K)

Article information

DOI: https://doi.org/10.1039/B912569H
Article type: Paper
Submitted: 25 Jun 2009
Accepted: 17 Aug 2009
First published: 02 Sep 2009

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Dalton Trans., 2009, 9246-9252

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3D Fe₃S₄ flower-like microspheres: high-yield synthesis via a biomolecule-assisted solution approach, their electrical, magnetic and electrochemical hydrogen storage properties

F. Cao, W. Hu, L. Zhou, W. Shi, S. Song, Y. Lei, S. Wang and H. Zhang, Dalton Trans., 2009, 9246 DOI: 10.1039/B912569H

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Dalton Transactions