Improvement of system capacitance via weavable superelastic biscrolled yarn supercapacitors.
Improvement of system capacitance via weavable superelastic biscrolled yarn supercapacitors.
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DOI：
10.1038/ncomms13811
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发表时间：
2016-12-15
影响因子：
16.6
通讯作者：
中科院分区：
文献类型：
--
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现有的和新兴的可穿戴应用需要具有改进性能的基于纱线的超级电容器。在这里，我们报告了可编织的碳纳米管纱线超级电容器具有高性能，因为高负载的快速访问的电荷存储颗粒（90重量%以上的MnO 2）。纱线电极由双卷工艺制成，该工艺将宿主MnO 2纳米颗粒捕获在螺旋状卷曲的碳纳米管片的画廊内，从而提供强度和导电性。尽管脆性金属氧化物颗粒的负载量很高，但双卷曲固态纱线超级电容器是柔性的，并且可以通过过度扭曲来产生纱线卷绕而弹性拉伸（高达30%应变）。纱线电极的最大面积电容比先前报道的纤维或纱线超级电容器高100倍。类似地，由具有凝胶电解质涂层的双卷曲纱线电极制成的完整固态超级电容器的能量密度显著高于先前报道的纤维或纱线超级电容器。 期望具有高负载的赝电容材料的碳纳米管纱线，例如，for emerging新兴wearable穿戴technologies技术.在这里，作者使biscrolled纱线与高负载的MnO 2纳米粒子限制在碳纳米管画廊，表现出非常高的线性和面积电容。
Yarn-based supercapacitors having improved performance are needed for existing and emerging wearable applications. Here, we report weavable carbon nanotube yarn supercapacitors having high performance because of high loadings of rapidly accessible charge storage particles (above 90 wt% MnO2). The yarn electrodes are made by a biscrolling process that traps host MnO2 nanoparticles within the galleries of helically scrolled carbon nanotube sheets, which provide strength and electrical conductivity. Despite the high loading of brittle metal oxide particles, the biscrolled solid-state yarn supercapacitors are flexible and can be made elastically stretchable (up to 30% strain) by over-twisting to produce yarn coiling. The maximum areal capacitance of the yarn electrodes were up to 100 times higher than for previously reported fibres or yarn supercapacitors. Similarly, the energy density of complete, solid-state supercapacitors made from biscrolled yarn electrodes with gel electrolyte coating were significantly higher than for previously reported fibre or yarn supercapacitors. Carbon nanotube yarns with high loadings of pseudocapacitive material are desirable, e.g., for emerging wearable technologies. Here authors make biscrolled yarns with high loadings of MnO2 nanoparticles confined in carbon nanotube galleries, demonstrating very high linear and areal capacitances.
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影响因子：
29.4
作者：
Wang, Bingjie;Fang, Xin;Peng, Huisheng
通讯作者：
Peng, Huisheng
影响因子：
29.4
作者：
Sun, Hao;You, Xiao;Peng, Huisheng
通讯作者：
Peng, Huisheng
影响因子：
16.6
作者：
Kwon, Cheong Hoon;Lee, Sung-Ho;Kim, Seon Jeong
通讯作者：
Kim, Seon Jeong
影响因子：
17.1
作者：
Viet Thong Le;Kim, Heetae;Lee, Young Hee
通讯作者：
Lee, Young Hee
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影响因子：
29.4
作者：
Meng, Yuning;Zhao, Yang;Qu, Liangti
通讯作者：
Qu, Liangti