@article{Chen_Huang_Hu_Fan_Shang_Pam_Li_Wang_Xu_Shi_Yang_2019, title={Boosting Sodium Storage of Fe1−xS/MoS2 Composite via Heterointerface Engineering}, volume={11}, url={https://www.nmlett.org/index.php/nml/article/view/159}, DOI={10.1007/s40820-019-0311-z}, abstractNote={<p>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 Fe<sub>1−<em>x</em></sub>S/MoS<sub>2</sub> 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 toward the next-generation high-performance energy storage devices.</p> <p>Highlights:</p> <p>1 Fe<sub>1−x</sub>S/MoS<sub>2</sub> heterostructure with abundant “ion reservoir” interfaces is designed to reduce sodium ion diffusion barrier and facilitate charge-transfer kinetics, thus endowing the electrode with excellent cycling stability and rate capability.<br>2 The in-depth analysis on the dynamic relationship between heterointerface and sodium storage performance carves a new path for interface engineering toward the next-generation high-performance energy storage devices.</p>}, journal={Nano-Micro Letters}, author={Chen, Song and Huang, Shaozhuan and Hu, Junping and Fan, Shuang and Shang, Yang and Pam, Mei Er and Li, Xiaoxia and Wang, Ye and Xu, Tingting and Shi, Yumeng and Yang, Hui Ying}, year={2019}, month={Sep.}, pages={80} }