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首页> 外文期刊>RSC Advances >High performance flexible supercapacitors based on secondary doped PEDOT–PSS–graphene nanocomposite films for large area solid state devices
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High performance flexible supercapacitors based on secondary doped PEDOT–PSS–graphene nanocomposite films for large area solid state devices

机译：基于辅助掺杂PETOT-PSS-石墨烯纳米复合膜的高性能柔性超级电容器，用于大面积固态装置

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In this work, we propose the development of high performance and flexible supercapacitors using reduced graphene oxide (rGO) incorporated poly(3,4 ethylenedioxythiophene):poly(styrene sulfonate) (PEDOT–PSS) nanocomposites by secondary doping. The structural and morphological features of the composite film were analyzed in detail using SEM, AFM, FTIR, XPS and TGA. Secondary doping of ethylene glycol (EG) assisted by rGO incorporation significantly enhances the room temperature conductivity of PEDOT–PSS films from 3 S cm ~(?1) to nearly 1225 S cm ~(?1) for a 10 wt% composite. The secondary doped PEDOT–PSS:EG/rGO composite film demonstrated improved electrochemical performances with specific capacitance of 174 (F g ~(?1) ) and energy density of 810 (W h kg ~(?1) ) which is nearly 4 times greater than pristine PEDOT–PSS due to synergetic interactions between rGO and PEDOT–PSS. The prepared composite films show long term stability with capacitance retention of over 90% after 5000 cycles of charging–discharging. The nanocomposite films used in the present investigation demonstrates percolative behavior with a percolation threshold at 10 wt% of rGO in PEDOT–PSS. The assembled supercapacitor device could be bent and rolled-up without a decrease in electrochemical performance indicating the potential to be used in practical applications. To demonstrate the practical applicability, a rolled-up supercapacitor device was constructed that demonstrates operation of a red LED for 40 seconds when fully charged. This study will provide new dimensions towards designing cost effective, flexible and all solid-state supercapacitors with improved electrochemical performance using electrodes based on secondary doped PEDOT–PSS/rGO organic thin films.
机译：在这项工作中，我们提出了使用次级掺杂的低碳氧化物（RGO）掺入的聚（苯乙烯磺酸盐）（PEDOT-PSS）纳米复合材料的高性能和柔性超级电容器的开发。使用SEM，AFM，FTIR，XPS和TGA详细分析复合膜的结构和形态特征。 rgo掺入辅助乙二醇（例如）的二次掺杂显着增强了10wt％复合材料的3 s cm〜（α1）至接近1225 scm〜（α1）的Pedot-pss膜的室温导电性。次级掺杂的PEDOT-PSS：例如/ RGO复合薄膜通过174（f g〜（α1））和810（wh kg〜（α1））的能量密度，所示的电化学性能改善了电化学性能，其近4倍由于RGO和PETOT-PSS之间的协同相互作用，而不是原始PEDOT-PSS。制备的复合薄膜在5000次充电放电后，长期稳定性，电容保持超过90％。本研究中使用的纳米复合膜在PEDOT-PS中以10wt％的RGO具有渗透阈值，证明了渗透性行为。组装的超级电容器装置可以弯曲和卷起，而不会降低电化学性能，指示在实际应用中使用的电位。为了证明实际适用性，构造了一种卷起的超级电容器装置，其在充满电时显示了红色LED的操作40秒。本研究将以基于次级掺杂的PEDOT-PSS / RGO有机薄膜的电极提供改善的电化学性能，为设计具有改进的电化学性能的成本效益，灵活和所有固态超级电容器提供新的尺寸。

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