Issue 22, 2024

3D-engineered WO3 microspheres assembled by 2D nanosheets with superior sodium storage capacity

Abstract

Because of the inadequate sodium storage capacity of graphite, the exploration of high-performance SIB anodes is a crucial step forward. Herein, we report the hydrothermally synthesized self-assembled interconnected nanosheets of WO3 microspheres possessing admirable sodium storage in terms of cycling stability and acceptable rate capability. Benefitting from the interconnected nature of the nanosheets with a hollow interior, the WO3 microspheres exhibited a high sodiation capacity of 431 mA h g−1 at 100 mA g−1 and an excellent rate performance of 60 mA h g−1 at 500 mA g−1 with an impressive coulombic efficiency of around 99%. Importantly, even after continuous cycling with increasing current densities, a specific capacity as high as 220 mA h g−1 could be recovered at a current density of 50 mA g−1, suggesting excellent sodium storage reversibility.

Graphical abstract: 3D-engineered WO3 microspheres assembled by 2D nanosheets with superior sodium storage capacity

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Article information

Article type
Paper
Submitted
08 Mar 2024
Accepted
02 May 2024
First published
14 May 2024
This article is Open Access
Creative Commons BY license

RSC Adv., 2024,14, 15706-15712

3D-engineered WO3 microspheres assembled by 2D nanosheets with superior sodium storage capacity

S. Sengupta, C. Sudakar and M. Kundu, RSC Adv., 2024, 14, 15706 DOI: 10.1039/D4RA01800A

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