Abstract
Metal sulfides (MSs) have been extensively studied in the fields of photochemical or electrochemical energy conversion and storage. Herein, core–shell structured Bi2S3@Co1-xS nanorods with heterojunction (CSBCNs) were synthesized for the first time by a facile hydrothermal method and applied in lithium-ion batteries (LIBs). The unique nanosized core–shell structure with heterojunction enhances the surface reaction kinetics and facilitates ions and charges transfer. Moreover, it can also weaken the agglomeration of the active materials and alleviate their volume change. Compared with pure Bi2S3 nanorods, Co1-xS, and Bi2S3/Co1-xS composites, CSBCNs exhibited much better cycling performance and rate capability.
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