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A Single Robust Hydrogel Film Based Integrated Flexible Supercapacitor
ACS Sustainable Chemistry & Engineering ( IF 7.1 ) Pub Date : 2018-11-10 00:00:00 , DOI: 10.1021/acssuschemeng.8b02728 Kanjun Sun 1 , Enke Feng 2, 3 , Guohu Zhao 1 , Hui Peng 3 , Ganggang Wei 3 , Yaya Lv 3 , Guofu Ma 3
ACS Sustainable Chemistry & Engineering ( IF 7.1 ) Pub Date : 2018-11-10 00:00:00 , DOI: 10.1021/acssuschemeng.8b02728 Kanjun Sun 1 , Enke Feng 2, 3 , Guohu Zhao 1 , Hui Peng 3 , Ganggang Wei 3 , Yaya Lv 3 , Guofu Ma 3
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Integrated configuration can greatly improve the stability of an energy-storage device in a large or repeated mechanical deformation process, but there is little attention paid to develop this conceptual energy-storage device. Here, we successfully design two embedded polypyrrole (PPy) layers as electrodes and a boron cross-linked PVA(poly(vinyl alcohol))/KCl hydrogel film as electrolyte to construct an integrated electrode–electrolyte–electrode flexible supercapacitor (so-called all-in-one supercapacitor). The boron cross-linked PVA/KCl hydrogel film (B-PVA/KCl) is prepared by simple physical and chemical cross-linking methods. Then, the conducting PPy is embedded in the B-PVA/KCl film by in situ growth to form a PPy/B-PVA/KCl composite film, which shows superior toughness and strength when it undergo large deformations, such as stretch, twist and compression. The integrated flexible supercapacitor can obtain a large areal capacitance of 224 mF cm–2 and a remarkable energy density of 20 μWh cm–2. Furthermore, such device exhibits excellent electrochemical stability under various bending angles (0°, 90°, and 180°) or 500 bending-releasing cycles, which due to the integrated electrode–electrolyte–electrode configuration can avoid the fall-off of electrode materials from the substrates and overcome the relative displacement between electrode and electrolyte layers during the consecutive bending cycles.
中文翻译：
基于单鲁棒水凝胶膜的集成柔性超级电容器
集成配置可以在大型或重复的机械变形过程中极大地提高能量存储设备的稳定性，但是很少有人关注开发这种概念性的能量存储设备。在这里，我们成功设计了两个嵌入的聚吡咯（PPy）层作为电极，并设计了硼交联的PVA（聚乙烯醇）/ KCl水凝胶膜作为电解质，从而构建了集成的电极-电解质-电极柔性超级电容器（所谓的全部-合一超级电容器）。硼交联的PVA / KCl水凝胶膜（B-PVA / KCl）是通过简单的物理和化学交联方法制备的。然后，通过原位生长将导电PPy嵌入B-PVA / KCl膜中，以形成PPy / B-PVA / KCl复合膜，当它经受较大的变形（如拉伸）时，其韧性和强度都很高。扭曲和压缩。集成的柔性超级电容器可获得224 mF cm的大面积电容–2和20μWhcm –2的显着能量密度。此外，这种器件在各种弯曲角度（0°，90°和180°）或500次弯曲释放循环下均具有出色的电化学稳定性，这归因于集成的电极-电解质-电极配置可以避免电极材料脱落并克服了连续弯曲周期中电极层和电解质层之间的相对位移。
更新日期：2018-11-10
中文翻译：
基于单鲁棒水凝胶膜的集成柔性超级电容器
集成配置可以在大型或重复的机械变形过程中极大地提高能量存储设备的稳定性，但是很少有人关注开发这种概念性的能量存储设备。在这里，我们成功设计了两个嵌入的聚吡咯（PPy）层作为电极，并设计了硼交联的PVA（聚乙烯醇）/ KCl水凝胶膜作为电解质，从而构建了集成的电极-电解质-电极柔性超级电容器（所谓的全部-合一超级电容器）。硼交联的PVA / KCl水凝胶膜（B-PVA / KCl）是通过简单的物理和化学交联方法制备的。然后，通过原位生长将导电PPy嵌入B-PVA / KCl膜中，以形成PPy / B-PVA / KCl复合膜，当它经受较大的变形（如拉伸）时，其韧性和强度都很高。扭曲和压缩。集成的柔性超级电容器可获得224 mF cm的大面积电容–2和20μWhcm –2的显着能量密度。此外，这种器件在各种弯曲角度（0°，90°和180°）或500次弯曲释放循环下均具有出色的电化学稳定性，这归因于集成的电极-电解质-电极配置可以避免电极材料脱落并克服了连续弯曲周期中电极层和电解质层之间的相对位移。
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