Abstract
? 2022 Elsevier B.V.The low electronic conductivity and severe volume change hinder the commercialization of Sb2S3 anode, despite many efforts have been made to improve its electrochemical properties in the past decades. Many of these methods are complicated and different kinds of chemicals are required. Herein, a facile high-temperature melting method was employed to prepare high-performance Sb2S3 anode with nanosizing bulk natural stibnite and wrapping activated carbon. The activated carbon can provide nano-pores that absorb the molten Sb2S3. This structure can not only promote electronic conductivity but also provide accommodation for the volume change of Sb2S3 nanoparticles. More importantly, compared to other methods such as the hydrothermal method, the advantage of this method is that natural stibnite (95 wt% Sb2S3) was directly used as the Sb2S3 source without other synthetic or purification processes. Benefiting from these merits, the Sb2S3 composite anode exhibits good cyclic stability and excellent rate property, which delivers a high capacity of over 450 mAh g?1 even at a current density of 5 A g?1, proving that the Sb2S3 composite can serve as a promising anode for advanced lithium-ion batteries.
NSTL
Elsevier