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Printed all-solid flexible microsupercapacitors: towards the general route for high energy storage devices

机译：印刷全固态柔性微型超级电容器：迈向高能量存储设备的通用路线

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摘要

A novel method for fabricating allsolid flexible microsupercapacitors (MSCs) was proposed and developed by utilizing screen printing technology. A typical printed MSC is composed of a printed Ag electrode, MnO_2/onionlike carbon (MnO_2/OLC) as active material and a polyvinyl alcohol:H_3PO_4 (PVA:H_3PO_4) as solid electrolyte. A capacity of 7.04 mF cm~(-2) was achieved for the screen printed MnO_2/OLC MSCs at a current density of 20 μA cm~(-2). It also showed an excellent cycling stability, with 80% retention of the specific capacity after 1000 cycles. The printed allsolid flexible MSCs exhibited remarkably high mechanical flexibility when the devices were bent to a radius of 3.5 mm. In addition, allsolid MSCs were successfully demonstrated by screen printing technique on various substrates, such as silicon, glass and conventional printing paper. Moreover, the screen printing technique can be extended to other active materials, such as OLC and carbon nanotubes. This method provides a general route for printable allsolid flexible MSCs, which is compatible with the rolltoroll process for various high performance active materials. Keywords: microsupercapacitor, all solid, flexible, screen printing, general route
机译：提出并开发了一种利用丝网印刷技术制备全固态柔性微型超级电容器的新方法。典型的印刷MSC由印刷的Ag电极，作为活性材料的MnO_2 /洋葱状碳（MnO_2 / OLC）和作为固体电解质的聚乙烯醇：H_3PO_4（PVA：H_3PO_4）组成。对于丝网印刷的MnO_2 / OLC MSC，在20μAcm〜（-2）的电流密度下，其容量为7.04 mF cm〜（-2）。它还显示了出色的循环稳定性，在1000次循环后保留了80％的比容量。当将装置弯曲到3.5 mm的半径时，印刷的全固态柔性MSC表现出非常高的机械柔性。此外，通过丝网印刷技术在各种基材（例如硅，玻璃和常规印刷纸）上成功展示了所有固体MSC。此外，丝网印刷技术可以扩展到其他活性材料，例如OLC和碳纳米管。该方法为可印刷的全固态柔性MSC提供了通用路线，该路线与用于各种高性能活性材料的Rolltoroll工艺兼容。关键字：微型超级电容器，全固态，柔性，丝网印刷，一般路线

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