Foldable supercapacitors from triple networks of macroporous cellulose fibers, single-walled carbon nanotubes and polyaniline nanoribbons
Foldable supercapacitors from triple networks of macroporous cellulose fibers, single-walled carbon nanotubes and polyaniline nanoribbons
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DOI：
10.1016/j.nanoen.2014.11.023
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发表时间：
2015-01-01
期刊：
影响因子：
17.6
通讯作者：
Yang, Shu
中科院分区：
文献类型：
--
作者：
Ge, Dengteng;Yang, Lili;Yang, Shu
我们报道了通过简单的“浸渍-吸收-聚合”方法使用大孔纤维素纤维网络Kimwipes（（R））作为支架的可折叠超级电容器电极。单壁碳纳米管（SWCNT）包裹在纤维素纤维周围作为导电皮肤，而纳米（类似于50 nm）和超长（数十微米）聚苯胺（PANI）纳米带在大孔纤维素纤维之间原位合成并在SWCNT网络内互穿。杂化材料显示出良好的体积电容（40.5 F/cm（3））和面积电容（0.33 F/cm（2）），这归因于SWCNTs网络内的电子传输和PANI纳米带的快速电荷转移之间的协同效应。纸基混合电极具有高度的柔性和顺应性;它可以像折纸起重机一样来回折叠多达1000次，而不会出现机械故障或电容损失。我们认为，三重网络和聚苯胺纳米带的独特形态的结合发挥了关键rots的重复折叠性。最后，我们组装了六个基于SWCNT/PANI纳米纤维纸电极串联的全固态超级电容器，分别在折叠前、折叠中和折叠后点亮LED 500次。(C)2014爱思唯尔有限公司版权所有。
We report foldable supercapacitor electrodes using a macroporous cellulose fiber network, Kimwipes((R)), as the scaffold through a simple "dip-absorption-polymerization" method. Single-walled carbon nanotubes (SWCNTs) wrapped around the cellulose fibers as the conductive skin, while ultrathin (similar to 50 nm) and ultralong (tens of microns) polyanitine (PANI) nanoribbons were synthesized in situ between macroporous cellulose fibers and interpenetrated within the SWCNT network. The hybrid material showed good volumetric (40.5 F/cm(3)) and areal capacitance (0.33 F/cm(2)), which was attributed to the synergistic effect between electron transport within the SWCNTs network and fast charge transfer of the PANI nanoribbons. The paper-based hybrid electrode was highly flexible and compliant; it could be folded back and forth as an origami crane up to 1000 times without mechanical failure or toss of capacitance. We believe that the combination of triple networks and the unique morphology of PANI nanoribbons played critical rotes to the repeated foldability. Finally, We assembled six all-solid-state supercapacitors based on the SWCNT/PANI nanoribbon paper electrodes connected in series, which lighted LED before, during and after folding for 500 times. (C) 2014 Elsevier Ltd. All rights reserved.