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- W3009391540 endingPage "121297" @default.
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- W3009391540 abstract "Rechargeable lithium-sulfur (Li-S) batteries, with a theoretical specific energy (2600 Wh kg-1) and theoretical specific capacity (1675 mAh g-1), are superior to current commercial lithium ion batteries. However, severe capacity fading due to volume breath and polysulfide dissolution greatly hinders the commercialization of Li-S battery. As an attempt to solve the problem, a hollow MnO2 spheres/porous reduced graphene oxide/S (MnO2/RGO/S) composite was synthesized by an one-step hydrothermal method, of which the hollow MnO2 spheres can effectively restrains the volume expansion/contraction of S8 and the dissolution of polysulfides during the charge-discharge processes. Furthermore, 3D RGO with high electronic conductivity can facilitates a fast electronic transfer. The initial specific capacity of the MnO2/RGO/S composite is 1202.0 mAh g-1 and remains 577.0 mAh g-1 with the coulombic efficiency of 93.2% at 0.2C after 200 cycles, and the capacity retention remains higher than 61.4% of the initial capacity after 100 cycles at 1C, indicating a synergistic effect of hollow MnO2 spheres and conductive 3D RGO." @default.
- W3009391540 created "2020-03-13" @default.
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- W3009391540 date "2020-06-01" @default.
- W3009391540 modified "2023-09-28" @default.
- W3009391540 title "Hollow MnO2 spheres/porous reduced graphene oxide as a cathode host for high-performance lithium-sulfur batteries" @default.
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- W3009391540 doi "https://doi.org/10.1016/j.jssc.2020.121297" @default.
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