Jump to main content
Jump to site search


Fe1−xS@S-doped carbon core–shell heterostructured hollow spheres as highly reversible anode materials for sodium ion batteries

Author affiliations

Abstract

Iron sulfide (Fe1−xS) has been considered as a promising anode material for sodium ion batteries (SIBs) because of its high theoretical capacity. However, Fe1−xS suffers from large volume change and sulfur dissolution issues during the sodiation/desodiation process, which lead to a poor cycle performance. Here, heterostructured Fe1−xS@S-doped carbon (Fe1−xS@SC) hollow spheres (HSs) have been prepared as SIB anode material. The Fe1−xS@SC HSs show a high reversible capacity of 776.2 mA h g−1 at 0.2 A g−1 and 454.3 mA h g−1 at 1.0 A g−1 after 500 cycles. The constructed Fe1−xS/SC heterojunctions play a key role in alleviating the large volume variation and stabilizing the reaction products Fe0 and Na2S, thus enhancing the conversion reaction kinetics of Fe0 and Na2S and ultimately resulting in a highly reversible conversion reaction. This work provides a possibility to solve the reversibility issue of conversion-type anode materials.

Graphical abstract: Fe1−xS@S-doped carbon core–shell heterostructured hollow spheres as highly reversible anode materials for sodium ion batteries

Back to tab navigation

Supplementary files

Publication details

The article was received on 07 Jul 2019, accepted on 02 Aug 2019 and first published on 06 Aug 2019


Article type: Paper
DOI: 10.1039/C9TA07302G
J. Mater. Chem. A, 2019, Advance Article

  •   Request permissions

    Fe1−xS@S-doped carbon core–shell heterostructured hollow spheres as highly reversible anode materials for sodium ion batteries

    Q. Pan, F. Zheng, Y. Liu, Y. Li, W. Zhong, G. Chen, J. Hu, C. Yang and M. Liu, J. Mater. Chem. A, 2019, Advance Article , DOI: 10.1039/C9TA07302G

Search articles by author

Spotlight

Advertisements