Enabling high-performance room-temperature sodium/sulfur batteries with few-layer 2H-MoSe2embellished nitrogen-doped hollow carbon spheres as polysulfide barriers
| العنوان: | Enabling high-performance room-temperature sodium/sulfur batteries with few-layer 2H-MoSe2embellished nitrogen-doped hollow carbon spheres as polysulfide barriers |
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| المؤلفون: | Jian-Chen Li, Wang Gao, Xing-You Lang, Qing Jiang, Hong Yu Zhou, Chunwei Dong, Bo Jin |
| المصدر: | Journal of Materials Chemistry A. 9:3451-3463 |
| بيانات النشر: | Royal Society of Chemistry (RSC), 2021. |
| سنة النشر: | 2021 |
| مصطلحات موضوعية: | Battery (electricity), Materials science, Renewable Energy, Sustainability and the Environment, Graphene, Oxide, chemistry.chemical_element, Separator (oil production), 02 engineering and technology, General Chemistry, 010402 general chemistry, 021001 nanoscience & nanotechnology, Electrochemistry, 01 natural sciences, Sulfur, Energy storage, 0104 chemical sciences, law.invention, chemistry.chemical_compound, chemistry, Chemical engineering, law, General Materials Science, 0210 nano-technology, Polysulfide |
| الوصف: | Room-temperature sodium/sulfur (RT-Na/S) batteries are of considerable interest for next-generation energy storage systems because of their earth-abundant electrode materials, low cost, and high energy density. However, the widespread application of RT-Na/S batteries is severely hindered by the dissolution, shuttling, and sluggish kinetics conversion of sodium polysulfides (SPSs) during electrochemical processes. Herein, we prepare a powerful functional separator to suppress the shuttle effect by directly coating 2H-MoSe2/nitrogen-doped hollow carbon spheres/graphene oxide (2H-MoSe2/N-HCS/GO) onto a standard glass fiber separator. The rational design of the functional separator effectively suppresses the migration of SPSs and promotes the conversion reactions of SPSs. Meanwhile, N-HCS decorated with few-layer 2H-MoSe2 nanoflakes is used as the sulfur host. As verified by a series of density functional theory calculations and experimental characterization, a RT-Na/S battery with a functional separator and a high sulfur content of 71.4 wt% delivers a high discharge capacity of 787 mA h g−1 at 0.1C after 100 cycles and exhibits outstanding long-term cycling stability (484 mA h g−1 at 0.5C after 500 cycles), with a low capacity fading rate of 0.077% per cycle. This study demonstrates an effective strategy to develop functional separators for shuttle suppression and provides a promising path for high-performance RT-Na/S batteries. |
| تدمد: | 2050-7496 2050-7488 |
| الوصول الحر: | https://explore.openaire.eu/search/publication?articleId=doi_________::044f6459a319c00962bef7ec74e1db39Test https://doi.org/10.1039/d0ta10159aTest |
| حقوق: | CLOSED |
| رقم الانضمام: | edsair.doi...........044f6459a319c00962bef7ec74e1db39 |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 20507496 20507488 |
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