Issue 14, 2024

Sulfur-doped carbon nanofibers as stable and high performance anode materials for sodium-ion batteries

Abstract

Carbon nanofibers are deemed ideal sodium-ion battery (SIB) anode materials due to their unique structure, but their low capacity has limited further development. Heteroatom modification is one of the common methods to improve the electrochemical properties of carbon materials. Therefore, we prepared sulfur-doped carbon nanofiber (CNF-nS) composites by heat-treating sublimed sulfur and carbon nanofiber precursors under an argon atmosphere. When it serves as the anode of a sodium ion half-cell, the reversible discharge specific capacity of CNF-2S is 368.2 mA h g−1, which is better than the 203.4 mA h g−1 of the carbon nanofiber (CNF). The CNF-2S anode also has good high-rate cycling performance, and its discharge specific capacity is 122 mA h g−1 at 10 A g−1 after 1000 cycles. Furthermore, the CNF-2S anode and the Na3V2(PO4)3 (NVP) cathode were paired and assembled into a full cell, which displayed a satisfactory capacity of 182.6 mA h g−1 after 200 cycles at 0.1 A g−1. In short, the CNF-2S anode exhibits good sodium storage performance, because sulfur doping increases the layer spacing of the CNF, promotes the transfer of sodium ions, and enhances the electronic conductivity.

Graphical abstract: Sulfur-doped carbon nanofibers as stable and high performance anode materials for sodium-ion batteries

Supplementary files

Article information

Article type
Paper
Submitted
09 Dzi 2024
Accepted
30 Mud 2024
First published
31 Mud 2024

Sustainable Energy Fuels, 2024,8, 3056-3064

Sulfur-doped carbon nanofibers as stable and high performance anode materials for sodium-ion batteries

M. Lu, Y. Huang, X. Du and X. Sheng, Sustainable Energy Fuels, 2024, 8, 3056 DOI: 10.1039/D4SE00478G

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.

Social activity

Spotlight

Advertisements