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首页> 外文期刊>Advanced Functional Materials >Lithium-Sulfur Battery Cable Made from Ultralight, Flexible Graphene/Carbon Nanotube/Sulfur Composite Fibers
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Lithium-Sulfur Battery Cable Made from Ultralight, Flexible Graphene/Carbon Nanotube/Sulfur Composite Fibers

机译：锂硫电池电缆，由超轻，柔性石墨烯/碳纳米管/硫复合纤维制成

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摘要

The emergence of flexible and wearable electronic devices with shape amenability and high mobility has stimulated the development of flexible power sources to bring revolutionary changes to daily lives. The conventional rechargeable batteries with fixed geometries and sizes have limited their functionalities in wearable applications. The first-ever graphene-based fibrous rechargeable batteries are reported in this work. Ultralight composite fibers consisting of reduced graphene oxide/carbon nanotube filled with a large amount of sulfur (rGO/CNT/S) are prepared by a facile, one-pot wet-spinning method. The liquid crystalline behavior of high concentration GO sheets facilitates the alignment of rGO/CNT/S composites, enabling rational assembly into flexible and conductive fibers as lithium-sulfur battery electrodes. The ultralight fiber electrodes with scalable linear densities ranging from 0.028 to 0.13 mg cm(-1) deliver a high initial capacity of 1255 mAh g(-1) and an areal capacity of 2.49 mAh cm(-2) at C/20. A shape-conformable cable battery prototype demonstrates a stable discharge characteristic after 30 bending cycles.
机译：具有形状适应性和高移动性的柔性和可穿戴电子设备的出现刺激了柔性电源的发展，从而为日常生活带来了革命性的变化。具有固定几何形状和尺寸的常规可再充电电池在可穿戴应用中限制了它们的功能。这项工作报道了首个基于石墨烯的纤维可充电电池。通过一种简便的一锅湿纺方法，制备了由填充有大量硫的还原型氧化石墨烯/碳纳米管组成的超轻复合纤维（rGO / CNT / S）。高浓度GO片材的液晶行为有利于rGO / CNT / S复合材料的排列，从而能够合理地组装成柔性和导电纤维，作为锂硫电池电极。具有从0.028到0.13 mg cm（-1）的可缩放线性密度的超光纤电极在C / 20时提供1255 mAh g（-1）的高初始容量和2.49 mAh cm（-2）的面积容量。形状适合的电缆电池原型在30个弯曲循环后显示出稳定的放电特性。

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