During the preparation of Sb2S3,precursor particles with varied crystal shapes and sizes were obtained through adjusting reaction temperatures. In particular,the Sb2S3 precursor particles synthesized at 60 ℃ processed moderate particle size and the best capacity retention after cycling. After further heat treatment for the Sb2S3-60 ℃ precursor,the as-prepared rod structure shows smooth surfaces with fewer defects and uniform distribution. Notably,Sb2S3-60 ℃-H@C exhibits the initial discharge capacity of 916 mA·h·g-1 at 0.1 A/g,with the capacity retention close to 90％ after cycling for 50 loops. Moreover,its rate capacity can be maintained to be 496 mA·h·g-1 at 5 A/g,indicating its great electrochemical reversibility. Apparently,the materials synthesized at 60 ℃ display rapid ion diffusion kinetics and robust structures,effectively buffering volume expansion and polysulfide shuttling,resulting in excellent lithium-ion storage performances. Therefore,optimizing the synthesis conditions of Sb2S3 precursors(containing the morphology,particle size and other internal properties) is important in the preparation of high-performance lithium-ion battery anodes.
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