Issue 48, 2022

A multifunctional cathode sodiation additive for high-performance sodium-ion batteries

Abstract

Sodium-ion batteries (SIBs) demonstrate great application prospects for large-scale energy storage owing to the merits of low cost and abundant sodium resources. Nevertheless, the low initial coulombic efficiency of anode materials inevitably consumes the limited Na+ from the cathode, leading to the loss of reversible capacity and inferior energy density of the full-cell. Herein, a multifunctional cathode sodiation additive, 1,2,4-triazole sodium (TS), is first proposed to offset the Na loss in sodium ion full-cells. The energy density of the as-constructed hard carbon//Na3V2(PO4)3 full cell with 10 wt% TS is obviously improved from 180 to 196 W h kg−1 based on the total mass of the cathode, additive, and anode. More importantly, this TS additive demonstrates multifunctional effects on the electrode. It can further modify the conductive framework in the electrode and build a desirable NaF-rich cathode electrolyte interface on the surface of the cathode, thus accelerating the sodiation/desodiation process. Furthermore, this additive can also enable the facile fabrication of a flexible Na3V2(PO4)3 electrode with high performance. This work provides a new-type of cathode sodiation additive with multiple roles for advanced SIBs.

Graphical abstract: A multifunctional cathode sodiation additive for high-performance sodium-ion batteries

Supplementary files

Article information

Article type
Paper
Submitted
10 אוק 2022
Accepted
11 נוב 2022
First published
12 נוב 2022

J. Mater. Chem. A, 2022,10, 25546-25555

A multifunctional cathode sodiation additive for high-performance sodium-ion batteries

R. Zhang, Y. Wang, R. Liu, D. Sun, Y. Tang, Z. Xie and H. Wang, J. Mater. Chem. A, 2022, 10, 25546 DOI: 10.1039/D2TA07910K

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