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Polydiacetylene-Perylenediimide Supercapacitors.
ChemSusChem ( IF 7.5 ) Pub Date : 2020-03-25 , DOI: 10.1002/cssc.202000440
Amrita De Adhikari 1 , Ahiud Morag 1 , Joonsik Seo 2 , Jong-Man Kim 2, 3 , Raz Jelinek 1, 4
Affiliation  

Organic supercapacitors have attracted interest as promising “green” and efficient components in energy storage applications. A polydiacetylene derivative coupled with reduced graphene oxide was employed, for the first time, to generate an organic pseudocapacitance‐based supercapacitor that exhibited excellent electrochemical properties. Specifically, diacetylene monomers were functionalized with perylenediimide (PDI), spontaneously forming elongated microfibers. Following polymerization through UV irradiation, the PDI–polydiacetylene microfibers were interspersed with reduced graphene oxide (rGO), generating a porous electrode material exhibiting a high surface area and facilitating efficient ion diffusion, both essential preconditions for supercapacitor applications. We show that PDI–polydiacetylene has an important role in enhancing the electrochemical properties as a supercapacitor electrode. Besides stabilizing the microporous electrode organization, the delocalized π electrons in both the PDI residues and conjugated network of the polydiacetylene contributed to a significantly higher capacitance (specific capacitance >600 F g−1 at 1 A g−1 current density), longer discharge time, and high power density. The PDI–polydiacetylene‐rGO electrodes were employed in a functional supercapacitor device.

中文翻译:

聚二乙炔-ylene二酰亚胺超级电容器。

在储能应用中,有机超级电容器作为有前景的“绿色”和高效组件而引起了人们的兴趣。首次将聚二乙炔衍生物与还原的氧化石墨烯偶联使用,以生成基于有机假电容的超级电容器,该电容器表现出出色的电化学性能。具体而言,将二乙炔单体用per二酰亚胺(PDI)官能化,自发形成细长的微纤维。通过紫外线辐照聚合后,PDI-聚二乙炔微纤维散布着还原的氧化石墨烯(rGO),生成了具有高表面积的多孔电极材料,并促进了有效的离子扩散,这都是超级电容器应用的基本前提。我们表明,PDI-聚二乙炔在增强作为超级电容器电极的电化学性能方面具有重要作用。除了稳定微孔电极组织外,PDI残基和聚二乙炔的共轭网络中的离域π电子还有助于显着提高电容(比电容> 600 F g-1 1个A G -1电流密度),较长的放电时间,和高功率密度。PDI-聚二乙炔-rGO电极用于功能性超级电容器设备中。
更新日期:2020-03-25
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