Solvent treatment inducing ultralong cycle stability poly(3,4‐ethylenedioxythiophene):poly(styrenesulfonic acid) fibers as binding‐free electrodes for supercapacitors,International Journal of Energy Research

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Solvent treatment inducing ultralong cycle stability poly(3,4‐ethylenedioxythiophene):poly(styrenesulfonic acid) fibers as binding‐free electrodes for supercapacitors
International Journal of Energy Research ( IF 4.3 ) Pub Date : 2020-03-24 , DOI: 10.1002/er.5352
Guoqiang Liu ₁ , Fengxing Jiang ₁ , Jing Liu ₁ , Congcong Liu ₁ , Jingkun Xu _{1,

2} , Qinglin Jiang ₃ , Nan Zheng ₃ , Guangming Nie ₂ , Peipei Liu _{1,

3}

Affiliation

As one kind of conducting polymer composite, poly(3,4‐ethylenedioxythiophene):poly(styrenesulfonic acid) (PEDOT:PSS) has been widely used as an electrode for energy storage and conversion devices because of its optical transmittance, flexibility, and high electrical conductivity etc. Here, we prepared binding‐free PEDOT:PSS fibers (PFs) electrodes with high capacitive performance for supercapacitors via a facile method followed by various solvent treatments. Dimethyl sulfoxide (DMSO)‐treated electrodes displayed a better specific capacitance (C_s) of 202 F/g at 0.5 A/g with higher elongation at break, flexibility, and conductivity of 140.7 S/cm, compared to those of pristine PEDOT:PSS materials. More importantly, the DMSO‐treated fibers possessed improved stability, which retained 105% of the initial C_s after 22 000 long cycles at 10 A/g. It is believed that the fabricated PFs will be promising organic electrodes for portable supercapacitors and other flexible electronic devices in the near future.

中文翻译：

溶剂处理诱导超长周期稳定性的聚（3,4-乙撑二氧噻吩）：聚（苯乙烯磺酸）纤维作为超级电容器的无粘结电极

聚（3,4-乙撑二氧噻吩）：聚（苯乙烯磺酸）（PEDOT：PSS）作为一种导电聚合物复合材料，由于其透光性，柔韧性和高的导电性而被广泛用作储能和转换装置的电极。在这里，我们通过一种简便的方法，随后进行了各种溶剂处理，为超级电容器准备了具有高电容性能的无粘结PEDOT：PSS纤维（PFs）电极。二甲基亚砜（DMSO）处理的电极显示出更好的比电容（C _s）与原始PEDOT：PSS材料相比，在0.5 A / g时为202 F / g），断裂伸长率，柔韧性和电导率更高，为140.7 S / cm。更重要的是，经DMSO处理的纤维具有更高的稳定性，在22 000个长循环下以10 A / g的速率保留了初始C_的105％。据信，在不久的将来，所制造的PF将成为用于便携式超级电容器和其他柔性电子设备的有机电极。

更新日期：2020-03-24

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