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Graphene-wrapped sulfur-based composite cathodes: ball-milling synthesis and high discharge capacity

机译:石墨烯包裹的硫基复合阴极:球磨合成和高放电容量

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摘要

A facile ball-milling route, which can help in large-scale synthesis, is developed to prepare graphene-wrapped sulfur/carbon nanotubes composite. Electrochemical tests show that the obtained composite demonstrates high sulfur utilization and good cycle performance. As calculated by the total mass of the composite, a high reversible capacity of 626.0 mA h g(-1) can be obtained after 70 cycles at a current density of 400 mA g(-1).
机译:开发了一种有助于大规模合成的简便球磨路线,以制备石墨烯包裹的硫/碳纳米管复合材料。电化学测试表明,所得复合材料具有较高的硫利用率和良好的循环性能。根据复合材料的总质量计算,在电流密度为400 mA g(-1)的情况下经过70个循环后,可获得626.0 mA h g(-1)的高可逆容量。

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