AUTHOR=Priyanka P. , Nalini B. , Soundarya G. G. , Christopher Selvin P. , Dutta Dimple P. 

TITLE=Effect of pulverisation on sulfide and tin antimonide anodes for sodium-ion batteries

JOURNAL=Frontiers in Energy Research

VOLUME=11

YEAR=2023

URL=https://www.frontiersin.org/journals/energy-research/articles/10.3389/fenrg.2023.1266653

DOI=10.3389/fenrg.2023.1266653

ISSN=2296-598X

ABSTRACT=<p>Metal sulfides and alloy anodes are a good choice for sodium-ion batteries (SIBs) since they have many benefitting advantages such as higher specific capacity, good cyclic stability, and higher rate capability. Tin antimony (Sn<sub>2</sub>Sb<sub>3</sub>), as an anode, exhibits a remarkable theoretical capacity of 753 mAhg<sup>−1</sup> that has not been realized so far for reaching the theoretical capacity; pulverization of sulfide-based material [copper sulfide (CuS)] along with tin antimonide would be a better option for obtaining a high-performance anode for SIBs. Hence, an attempt is made to study the pulverisation effects of these two materials when employed as an anode for SIBs. The pulverised compound CuS: Sn<sub>2</sub>Sb<sub>3</sub> delivers an initial discharge capacity of 659 mAhg<sup>−1</sup> at 0.1 Ag<sup>−1</sup> vs. Na/Na<sup>+</sup> with high stability retaining up to 100% efficiency over 100 cycles. The present work highlights the structural changes upon pulverisation and its impact on delivering higher capacity.</p>