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Greigite Fe₃S₄ as a new anode material for high-performance sodium-ion batteries.

ABSTRACT: Transition metal dichalcogenide materials have been considered as promising anode materials for rechargeable sodium-ion batteries because of their high specific capacity and low cost. Here, we demonstrate an iron sulfide Fe₃S₄ as a new anode material for a rechargeable sodium-ion battery. The involved conversion mechanism has been proved when the as-prepared Fe₃S₄ was used as the host material for sodium storage. Remarkably, a compound FeS _x with quantum size generated by conversion reaction overcame the kinetic and thermodynamic constraints of chemical conversion to achieve superior cycling and rate capability. As a result, the as-prepared Fe₃S₄ electrode delivers a high reversible specific capacity of 548 mA h g^-1 at 0.2 A g^-1, together with an excellent cycling stability of 275 mA h g^-1 after 3500 cycles at 20 A g^-1.

SUBMITTER: Li Q

PROVIDER: S-EPMC5308403 | biostudies-literature | 2017 Jan

REPOSITORIES: biostudies-literature

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Greigite Fe3S4 as a new anode material for high-performance sodium-ion batteries.

Li Qidong Q Wei Qiulong Q Zuo Wenbin W Huang Lei L Luo Wen W An Qinyou Q Pelenovich Vasiliy O VO Mai Liqiang L Zhang Qingjie Q

Chemical science 20160801 1

Transition metal dichalcogenide materials have been considered as promising anode materials for rechargeable sodium-ion batteries because of their high specific capacity and low cost. Here, we demonstrate an iron sulfide Fe3S4 as a new anode material for a rechargeable sodium-ion battery. The involved conversion mechanism has been proved when the as-prepared Fe3S4 was used as the host material for sodium storage. Remarkably, a compound FeS x</i ...[more]

PMID: 28451160

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