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- W2618781693 abstract "Lithium-sulfur (Li-S) batteries are of great importance as promising electrochemical-energy storage systems in view of their overwhelming advantage of energy density. However, their commercial applications are still far away mainly due to fast capacity decay in a high sulfur content caused by low utilization of active material and severe polysulfide dissolution during electrochemical cycling. Here we have designed and prepared uniform α-Ni(OH)2 hollow spheres constructed from ultrathin nanosheets with the thickness of ~3.5 nm as a hollow sulfur nanosphere host for Li-S batteries. Specifically, the synthesized hierarchical hollow spheres not only manifest the advantages of hollow structure and robust protective shell to encapsulate a very high content of sulfur up to 81 wt%, but also offer sufficient functionalized surfaces to directly bond and entrap polysulfides in hollow sphere. When used as cathode materials for Li-S batteries, the [email protected](OH)2 double-shell hollow hybrids exhibit a highly stable cycle life over 1000 cycles at 1 C with a very small capacity decay rate of only ~0.04% per cycle." @default.
- W2618781693 created "2017-06-05" @default.
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- W2618781693 date "2017-07-01" @default.
- W2618781693 modified "2023-10-18" @default.
- W2618781693 title "Uniform α-Ni(OH)2 hollow spheres constructed from ultrathin nanosheets as efficient polysulfide mediator for long-term lithium-sulfur batteries" @default.
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- W2618781693 doi "https://doi.org/10.1016/j.ensm.2017.04.003" @default.
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