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- W4206608220 abstract "Rechargeable lithium–sulfur batteries (LSBs) are recognized as a promising candidate for next-generation energy storage devices because of their high theoretical specific capacity and energy density. However, the insulating of sulfur, Li2S2/Li2S, and the shuttling effect of high order lithium polysulfides (LiPSs) hinder its practical applications. Herein, a heterostructure is explored to enhance the conversion reaction kinetics and adsorption ability of LiPSs. By rationally designing a conductive carbon framework and polar metal sites, both experimental and theoretical results show strong adsorption abilities for dissolved LiPSs and promote the conversion reaction rate. A CoSe2/Co3O4@NC-CNT/S cathode shows an excellent rate performance (≈1457 mAh g−1 at 0.1 C and still retains ≈688 mAh g−1 at a high rate of 5 C). When performing charge–discharge in long-term stability at 2 C, the CoSe2/Co3O4@NC-CNT/S cathode delivers a high initial specific capacity of ≈780 mAh g−1 and retains ≈602 mAh g−1 after 500 cycles with an excellent Coulombic efficiency of ≈95.4%. Remarkably, the battery can entirely operate even at a very high sulfur loading of ≈10.1 mg cm−2 and lean electrolyte condition. This work emphasizes a new strategy to rationally design heterostructures that can encourage the industrial application of LSBs." @default.
- W4206608220 created "2022-01-26" @default.
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- W4206608220 date "2022-01-13" @default.
- W4206608220 modified "2023-10-11" @default.
- W4206608220 title "Uniformly Controlled Treble Boundary Using Enriched Adsorption Sites and Accelerated Catalyst Cathode for Robust Lithium–Sulfur Batteries" @default.
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- W4206608220 doi "https://doi.org/10.1002/aenm.202102805" @default.
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