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- W4200210400 abstract "A ternary compound was synthesized from titanium dioxide, elemental sulfur and polyacrylonitrile throughout a simple ball-milling and heating process in inert atmosphere, and was fully characterized. The novel compound belongs to the family of sulfurized polyacrylonitrile compounds (SPAN) and was incorporated as active material in the cathode of Li-S batteries. The cells achieve high and stable capacity values at 0.5 C reaching 1885 mAh g S −1 for the 10th cycle and ∼1600 mAh g S −1 after 200 cycles (498 and 422 mAh g −1 composite, respectively). To the best of our knowledge, we are the first ones to report the combination of SPAN and TiO 2 , and to show the synergistic behaviour of these compounds. The high capacity values observed, higher than the theoretical capacity of elemental sulfur (1675 mAh g −1 ), are explained by the extra capacity provided by the lithiation/delithiation process of TiO 2 . The metallic oxide also improves the overall kinetics of the redox processes in SPAN, which helped to achieve good cycling performance at 3.3 C, with a remaining capacity of 672 mAh g S −1 after 1400 cycles, and even at 5 C where a remaining capacity of 660 mAh g S −1 after 500 cycles was recorded." @default.
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- W4200210400 date "2021-12-01" @default.
- W4200210400 modified "2023-10-16" @default.
- W4200210400 title "Synergistic Combination of TiO<sub>2</sub> and S-PAN for Li-S Batteries with Long-Term Cyclability at High C-Rates" @default.
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- W4200210400 doi "https://doi.org/10.1149/1945-7111/ac42a3" @default.
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