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One-Pot Synthesis of High-Performance Tin Chalcogenides/C Anodes for Li-Ion Batteries.

ABSTRACT: Tin chalcogenides are considered as promising anode materials for lithium-ion batteries (LIBs) due to their high theoretical lithium-storage capacity. Herein, we have successfully synthesized the composites of tin chalcogenides and graphite, that is, SnS/C, SnSe/C, and SnS_0.5Se_0.5/C, via a simple one-pot solid-state method. During the electrochemical test, they exhibit excellent lithium-storage ability and cyclic performance as the anode electrodes of LIBs due to the introduction of carbon. In particular, (i) SnS/C displayed a high specific capacity of 875 mAh g^-1 at 0.2 A g^-1 over 200 cycles; (ii) SnSe/C presents 734 mAh g^-1 at 0.2 A g^-1 after 100 cycles, and it delivers 690 mAh g^-1 at 1.0 A g^-1 over 300 cycles; and (iii) the SnS_0.5Se_0.5/C composite electrode delivers a specific capacity of 643 mAh g^-1 at 0.5 A g^-1 over 150 cycles. Furthermore, another series of tin-based composites have also been successfully fabricated (i.e., Sn/C, SnS₂/C, SnSe₂/C, and SnTe/C), showing the general applicability of the synthetic route applied here. Our synthetic approach demonstrates a promising route for the large-scale production of high-performance tin chalcogenides/C anode materials for LIBs and other battery systems (e.g., Na-ion and K-ion batteries).

SUBMITTER: Liu X

PROVIDER: S-EPMC8280710 | biostudies-literature |

REPOSITORIES: biostudies-literature

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