期刊
ACS APPLIED NANO MATERIALS
卷 6, 期 2, 页码 946-952出版社
AMER CHEMICAL SOC
DOI: 10.1021/acsanm.2c04326
关键词
Li+-intercalated SnS2; urothermal method; Li-ion batteries; initial Coulombic efficiency; excellent rate performance
Li+-intercalated SnS2 with expanded interlayer spacing (0.89 nm) was prepared by the one-step urothermal method as a promising anode material for Li-ion batteries. Compared with pure SnS2, the Li+-intercalated SnS2 electrode exhibits higher initial Coulombic efficiency (79.3% vs 55%), better rate performance (548.4 mAh g(-1)at 2 A g(-1)and 216.6 mAh g(-1)at 10 A g(-1)), and improved cycling performance (647.7 mAh g(-1) at 0.1 A g(-1)after 100 cycles).
Tin sulfide, as a promising anode material for Li-ion batteries, suffers from high-capacity loss during cycling and low initial Coulombic efficiency, which limits its further application. In order to solve these problems, Li+-intercalated SnS2 with expanded interlayer spacing (0.89 nm) was prepared by the one-step urothermal method. The successful synthesis of Li+-intercalated SnS2 is confirmed by means of X-ray diffraction, scanning electron microscopy, transmission electron microscopy, energy-dispersive X-ray spectroscopy, inductively coupled plasma emission spectrometer test, and exfoliation experiment. Compared with pure SnS2, the Li+-intercalated SnS2 electrode displays a higher initial Coulombic efficiency (79.3%) than the pure SnS2 electrode (55%). Also, Li+-intercalated SnS2 exhibits more excellent rate performance (548.4 mAh g(-1)at 2 A g(-1)and 216.6 mAh g(-1)at 10 A g(-1)) and cycling performance (647.7 mAh g(-1) at 0.1 A g(-1 )after 100 cycles).
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