Issue 33, 2022

Rational design of double-shelled Cu2MoS4@N-doped carbon hierarchical nanoboxes toward fast and stable sodium-ion batteries

Abstract

Bimetal and/or mixed-metal sulfides have received significant attention for efficient sodium storage due to their high capacity and decent redox activity. However, the poor-rate capability and fast capacity decay dramatically impede their practical application in sodium-ion batteries (SIBs). Herein, a facile multistep template-engaged strategy has been developed to rationally synthesize hierarchical double-shelled nanoboxes with the nitrogen-doped carbon outer shell supported on the nanosheet-constructed Cu2MoS4 inner shell (Cu2MoS4@NC). Benefiting from the unique structure and composition, the Cu2MoS4@NC as a SIB anode delivers excellent electrochemical properties in terms of reversible capacity, rate capability, and cycling stability. Furthermore, electrode kinetics is systematically studied, providing a valuable revelation for understanding its performance evolution. Particularly, the stepwise (re)conversion mechanism involved in the (de)sodiation process for Cu2MoS4@NC has been revealed by in/ex situ measurements, demonstrating that the non-reacted component can act as a temporary buffer/conductor for the reacted one to improve sodium storage. Finally, promising potential in practical application is exhibited, where a designed Cu2MoS4@NC||Na3V2(PO4)2F3/C full cell retains a reversible capacity of 166 mA h gāˆ’1 after 1000 cycles at 1.0 A gāˆ’1. The research strategy and findings presented herein are expected to boost the development and application of metal sulfide-based anodes in SIBs and beyond.

Graphical abstract: Rational design of double-shelled Cu2MoS4@N-doped carbon hierarchical nanoboxes toward fast and stable sodium-ion batteries

Supplementary files

Article information

Article type
Paper
Submitted
27 Jun 2022
Accepted
14 Jul 2022
First published
16 Jul 2022

J. Mater. Chem. A, 2022,10, 17185-17198

Rational design of double-shelled Cu2MoS4@N-doped carbon hierarchical nanoboxes toward fast and stable sodium-ion batteries

B. Yan, L. Lin, C. Sun, L. Gao, H. Tao, L. Zhang, S. Zhong, X. Li and X. Yang, J. Mater. Chem. A, 2022, 10, 17185 DOI: 10.1039/D2TA05119B

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