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首页> 外文期刊>Nanotechnology >3V omni-directionally stretchable one-body supercapacitors based on a single ion-gel matrix and carbon nanotubes
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3V omni-directionally stretchable one-body supercapacitors based on a single ion-gel matrix and carbon nanotubes

机译：基于单个离子凝胶基质和碳纳米管的3V全向可拉伸一体式超级电容器

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Stretchable supercapacitors often have laminated structures consisting of electrode, electrolyte, and supporting layers. Since the layers are likely to be composed of different materials, delamination is a major cause of failure upon stretching. In this study, we demonstrate delamination-free stretchable supercapacitors where all the component layers are prepared with a single matrix, which is composed of a polymer, poly(vinylidene fluoride-hexafluoropropylene) and an ionic liquid, 1-ethyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide. Since the ionic liquid in the composite plays a role as both an electrolyte and a plasticizer, this composite can be used as an electrolyte and a supporting layer in the stretchable supercapacitor. The electrode layer can be fabricated by incorporating carbon nanotubes in the common matrix. Then, all the layers can be seamlessly fused into one body by dissolving the surface of the composite with acetone, which evaporates after the integration, leaving no borders between the layers. This one-body stretchable supercapacitor not only has high durability against repetitive stretches but also is stretchable in all directions. This feature clearly distinguishes them from conventional stretchable supercapacitors fabricated using buckled structures, which are stretchable only in one or two directions. Moreover, this supercapacitor has high cell voltage (similar to 3V) owing to the ionic liquid-based gel electrolytes. Our demonstration of isotropically stretchable high-durability supercapacitors may have a great implication in the development of stretchable energy storage devices for real applications.
机译：可拉伸的超级电容器通常具有由电极，电解质和支撑层组成的层压结构。由于这些层可能由不同的材料组成，因此分层是拉伸时失效的主要原因。在这项研究中，我们展示了无分层的可拉伸超级电容器，其中所有组件层均使用单一基质制备，该基质由聚合物，聚偏二氟乙烯-六氟丙烯和离子液体1-乙基-3-甲基咪唑鎓双（三氟甲基磺酰基）酰亚胺。由于复合物中的离子液体同时充当电解质和增塑剂，因此该复合物可用作可拉伸超级电容器中的电解质和支撑层。电极层可以通过将碳纳米管掺入公共基质中来制造。然后，可以通过用丙酮溶解复合材料的表面将所有层无缝融合到一个主体中，丙酮在整合后会蒸发，在层之间不留边界。这种一体式可拉伸超级电容器不仅具有抗重复拉伸的高耐久性，而且在所有方向上均可拉伸。此功能将它们与使用带扣结构制造的常规可拉伸超级电容器区分开来，后者只能在一个或两个方向上拉伸。此外，由于基于离子液体的凝胶电解质，该超级电容器具有高电池电压（类似于3V）。我们对各向同性可拉伸高耐用性超级电容器的演示可能对开发用于实际应用的可拉伸储能设备具有重要意义。

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