Liu Xianyu, Najam Tayyaba, Yasin Ghulam, Kumar Mohan, Wang Miao
School of Chemistry and Chemical Engineering, Lanzhou City University, Lanzhou 730070, China.
Institute for Advanced Study, Shenzhen University, Shenzhen 518060, China.
ACS Omega. 2021 Jun 30;6(27):17391-17399. doi: 10.1021/acsomega.1c01647. eCollection 2021 Jul 13.
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 SnSSe/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 at 0.2 A g over 200 cycles; (ii) SnSe/C presents 734 mAh g at 0.2 A g after 100 cycles, and it delivers 690 mAh g at 1.0 A g over 300 cycles; and (iii) the SnSSe/C composite electrode delivers a specific capacity of 643 mAh g at 0.5 A g over 150 cycles. Furthermore, another series of tin-based composites have also been successfully fabricated (i.e., Sn/C, SnS/C, SnSe/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).
锡硫属化合物因其高理论储锂容量而被认为是锂离子电池（LIBs）很有前景的负极材料。在此，我们通过一种简单的一锅法固态方法成功合成了锡硫属化合物与石墨的复合材料，即SnS/C、SnSe/C和SnSSe/C。在电化学测试中，由于碳的引入，它们作为LIBs的负极电极表现出优异的储锂能力和循环性能。具体而言，（i）SnS/C在0.2 A g下200次循环中显示出875 mAh g的高比容量；（ii）SnSe/C在100次循环后在0.2 A g下呈现734 mAh g的比容量，并且在1.0 A g下300次循环中提供690 mAh g的比容量；（iii）SnSSe/C复合电极在0.5 A g下150次循环中提供643 mAh g的比容量。此外，还成功制备了另一系列的锡基复合材料（即Sn/C、SnS/C、SnSe/C和SnTe/C），表明此处应用的合成路线具有普遍适用性。我们的合成方法为大规模生产用于LIBs和其他电池系统（如钠离子和钾离子电池）的高性能锡硫属化合物/C负极材料展示了一条有前景的途径。
