Nano-Micro Letters

Boosting Sodium Storage of Fe1-xS/MoS2 Composite via Heterointerface Engineering

Song Chen1, 2, Shaozhuan Huang2, Junping Hu2, Shuang Fan1, 2, Yang Shang2, Mei Er Pam2, Xiaoxia Li2, Ye Wang4, Tingting Xu4, Yumeng Shi1, 3, *, Hui Ying Yang2, *

Abstract | Support Info
icon-htmlFull Text Html
icon-pdf-smPDF w/ Links
icon-citExport Citation
+Show more

Nano-Micro Lett. (2019) 11: 80

First Online: 23 September 2019 (Article)


*Corresponding author. E-mail: (Hui Ying Yang); (Yumeng Shi)





Improving the cycling stability of metal sulfide-based anode materials at high rate is of great significance for advanced sodium ion batteries. However, the sluggish reaction kinetics is a big obstacle for the development of high-performance sodium storage electrodes. Herein, we have rationally engineered the heterointerface by designing the Fe1-xS/MoS2 heterostructure with abundant “ion reservoir” to endow the electrode with excellent cycling stability and rate capability, which is proved by a series of in- and ex-situ electrochemical investigations. Density functional theory calculations further reveal that the heterointerface greatly decreases sodium ion diffusion barrier and facilitates charge transfer kinetics. Our present findings not only provide a deep analysis on the correlation between the structure and performance, but also draw inspiration for rational heterointerface engineering towards the next-generation high-performance energy storage devices.



Heterostucture; Heterointerface; Diffusion barrier; Ion reservoir; Sodium ion battery

 View: Full Text HTML | PDF w/ Links