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Freestanding polypyrrole/carbon nanotube electrodes with high mass loading for robust flexible supercapacitors
Materials Chemistry Frontiers ( IF 7 ) Pub Date : 2020-10-16 , DOI: 10.1039/d0qm00649a
Songjie Wang 1, 2, 3, 4, 5 , Yongyin Liang 1, 2, 3, 4, 5 , Wenchen Zhuo 4, 6, 7, 8, 9 , Hang Lei 4, 6, 7, 8, 9 , Muhammad Sufyan Javed 3, 10, 11, 12 , Botian Liu 1, 2, 3, 4, 5 , Zilong Wang 1, 2, 3, 4, 5 , Wenjie Mai 1, 2, 3, 4, 5
Affiliation  

To meet the increasing requirement of flexible energy storage devices, it is critical to develop an electrode with commercial-level mass loading of active material for supercapacitors. Herein, we fabricated a high mass loading and freestanding CNT@PPy electrode (6.07 mg cm−2) by a simple vacuum filtration and low-temperature polymerization method. Moreover, owing to the high conductivity of CNT fiber networks offering a fast electron transporting passage, the optimized CNT@PPy electrode exhibits a prominent areal capacitance (2.6 F cm−2) with significantly improved mechanical properties (its ultimate tensile strength is 20.7 MPa, 23 times higher than that of pure CNT film). The freestanding all-solid-state symmetric supercapacitor based on the optimized CNT@PPy electrode obtains a high power density of 0.64 mW cm−2 at an energy density of 76.7 μW h cm−2.

中文翻译:

具有高质量负载的独立式聚吡咯/碳纳米管电极,用于坚固的柔性超级电容器

为了满足对柔性能量存储设备的不断增长的需求,开发具有商业水平质量负载的超级电容器活性材料的电极至关重要。在这里,我们通过简单的真空过滤和低温聚合方法制备了高质量负载和独立式CNT @ PPy电极(6.07 mg cm -2)。此外,由于提供快速电子传输通道的CNT纤维网络的高导电性,优化的CNT @ PPy电极具有出色的面电容(2.6 F cm -2),具有明显改善的机械性能(其极限抗拉强度为20.7 MPa,是纯CNT膜的23倍)。基于优化的CNT @聚吡咯电极的独立的全固态对称超级电容器获得的0.64毫瓦cm的高功率密度-2在76.7μW高厘米的能量密度-2
更新日期:2020-11-03
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