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- W3128187892 abstract "Lithium–sulfur batteries, owing to their excellent advantages (including low cost and high theoretical energy density), might be the next-generation energy storage devices. However, the low S contents in their electrodes and the shuttling effect of soluble polysulfides can significantly deteriorate their capacities and cycle lives. Herein, we demonstrate a uniquely structured composite electrode, named porous polymerized vinyl acetate (p-PVAc) thin films, to break through the “trade-off” between the energy density and rate capability. S nanoparticles were encapsulated by porous p-PVAc layers and then anchored on graphene (p-PVAc/S/G), facilitating ion exchange and electron transfer during electrochemical operations. Consequently, p-PVAc/S/G delivered a high specific capacity of 719 mAh g−1 at 0.1 A g−1 and exceeded even 350 mAh g−1 at a high current density of 5 A g−1, whereas the average Coulombic efficiency was preserved to be higher than 98.50% when repeated for more than 300 cycles at 1 A g−1." @default.
- W3128187892 created "2021-02-15" @default.
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- W3128187892 date "2021-05-01" @default.
- W3128187892 modified "2023-10-01" @default.
- W3128187892 title "Porous polymer thin film encapsulated sulfur nanoparticles on graphene via partial evaporation for high-performance lithium–sulfur batteries" @default.
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- W3128187892 doi "https://doi.org/10.1016/j.apsusc.2021.149199" @default.
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