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首页> 外文期刊>Journal of Alloys and Compounds: An Interdisciplinary Journal of Materials Science and Solid-state Chemistry and Physics >Synthesis of porous-carbon@reduced graphene oxide with superior electrochemical behaviors for lithium-sulfur batteries
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Synthesis of porous-carbon@reduced graphene oxide with superior electrochemical behaviors for lithium-sulfur batteries

机译:锂 - 硫电池卓越电化学行为的多孔 - 碳氧化物的合成

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Nanosheet-like porous-carbon@reduced graphene oxide (PC@rGO) composite is successfully prepared via a facile soaking and freeze-drying process followed by heat treatment. The structural and morphological characterizations demonstrate that the porous-carbon is homogenously embedded with rGO. When employed as a cathode material for Li-S batteries, the electrode delivers a high capacity of 634 mAh g(-1) at 1.0 A g(-1) after 100 cycles. Moreover, the reversible capacities of the composites reached 871, 792 and 694 mAh g(-1) at 0.2, 0.5 and 1.0 A g(-1), respectively. The outstanding electrochemical performance of the composites demonstrates a promising direction for research on superior high energy density Li-S batteries. (C) 2020 Elsevier B.V. All rights reserved.
机译:纳米片状多孔材料-carbon@reduced氧化石墨烯(PC@rGO)通过简单的浸泡和冷冻干燥过程,然后进行热处理,成功制备了复合材料。结构和形态表征表明,多孔碳均匀嵌入rGO。当用作锂硫电池的正极材料时,该电极在100次循环后,在1.0A g(-1)下提供634 mAh g(-1)的高容量。此外,复合材料在0.2、0.5和1.0ag(-1)下的可逆容量分别达到871、792和694mah-g(-1)。复合材料优异的电化学性能为高能量密度锂硫电池的研究提供了一个良好的方向。(C) 2020爱思唯尔B.V.版权所有。

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