Issue 20, 2021

Temperature-regulated biomass-derived hard carbon as a superior anode for sodium-ion batteries

Abstract

Hard carbon is considered as one of the most promising carbonaceous anode materials to promote the commercialization of sodium-ion batteries (SIBs). However, the low initial coulombic efficiency (ICE) of hard carbon materials and the mechanism of sodium storage are still controversial, which seriously restricts their practical applications in SIBs. Herein, hard carbon materials with a multichannel structure derived from golden berry leaves were successfully prepared via a simple carbonization method that was carried out in the temperature range of 1000 °C to 2000 °C. The initial discharge capacity of the sample carbonized at 1400 °C can reach 338.7 mA h g−1 at 20 mA g−1, and deliver an excellent ICE of 86.43%. Furthermore, when the carbonization temperature reaches 2000 °C, the contribution of the plateau-specific capacity can reach up to 91.11%. Combining both experimental characterization results and analysis, the mechanism of sodium storage in hard carbon can be considered as the slope capacity corresponding to the adsorption of sodium ions on defect sites and heteroatoms, while the plateau capacity corresponds to the sodium ion intercalation into the interlayers and filling in the micropores.

Graphical abstract: Temperature-regulated biomass-derived hard carbon as a superior anode for sodium-ion batteries

Supplementary files

Article information

Article type
Research Article
Submitted
22 Мау. 2021
Accepted
25 Там. 2021
First published
26 Там. 2021

Mater. Chem. Front., 2021,5, 7595-7605

Temperature-regulated biomass-derived hard carbon as a superior anode for sodium-ion batteries

R. Li, X. He, Z. Yang, X. Liu, Y. Qiao, L. Xu, L. Li and S. Chou, Mater. Chem. Front., 2021, 5, 7595 DOI: 10.1039/D1QM00911G

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