Laboratory filter paper as a substrate material for flexible supercapacitors†,Sustainable Energy & Fuels

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Laboratory filter paper as a substrate material for flexible supercapacitors†
Sustainable Energy & Fuels ( IF 5.0 ) Pub Date : 2017-10-06 00:00:00 , DOI: 10.1039/c7se00411g
Leicong Zhang _{1,

2,

3,

4,

5} , Xuecheng Yu _{1,

2,

3,

4,

5} , Pengli Zhu _{1,

2,

3,

4} , Fengrui Zhou _{1,

2,

3,

4} , Gang Li _{1,

2,

3,

4} , Rong Sun _{1,

2,

3,

4} , Ching-ping Wong _{1,

2,

3,

4,

6}

Affiliation

In this study, a flexible asymmetrical solid-state filter paper-based supercapacitor was fabricated. Common laboratory filter paper (FP) provides toughness and flexibility to the whole device. Simply, traditional electroless Ni plating and electro-deposition were introduced to change the electrical conductivity of FP as a flexible and conductive substrate material. Then, the electrochemical active material Co(OH)₂ and active carbon (AC) were respectively coated on the conductive Ni paper through electro-deposition and physical coating methods to prepare Ni/Co(OH)₂-FP as a positive electrode and Ni/AC-FP as a negative electrode. Moreover, they were separated by a piece of FP coated with an ionic gel electrolyte to assemble the flexible asymmetrical solid-state supercapacitors. This supercapacitor exhibits superior flexibility, large volume energy density (0.64 mW h cm⁻³), and good bending cycle performance (95.89% capacitance retention after 500 bending cycles). It has been demonstrated that the assembled supercapacitor can still power a red light-emitting diode (LED) indicator normally regardless of the bending state and bending frequency. This study may provide promising insights for the design and fabrication of a flexible asymmetrical solid-state supercapacitor in a flexible power supply for wearable and portable applications.

中文翻译：

实验室滤纸作为柔性超级电容器的基材†

在这项研究中，制造了一种基于柔性不对称固态滤纸的超级电容器。普通的实验室滤纸（FP）为整个设备提供韧性和柔韧性。简而言之，引入了传统的化学镀镍和电沉积以改变作为柔性和导电衬底材料的FP的电导率。然后，通过电沉积和物理涂覆方法将电化学活性材料Co（OH）₂和活性炭（AC）分别涂覆在导电Ni纸上以制备Ni / Co（OH）_2。-FP作为正极，Ni / AC-FP作为负极。此外，它们被一块涂覆有离子凝胶电解质的FP隔开，以组装柔性不对称固态超级电容器。该超级电容器具有优异的柔韧性，大的体积能量密度（0.64 mW h cm ^-3）和良好的弯曲循环性能（500个弯曲循环后的电容保持率为95.89％）。已经证明，无论弯曲状态和弯曲频率如何，组装的超级电容器仍可正常为红色发光二极管（LED）指示器供电。这项研究可以为可穿戴和便携式应用中的柔性电源中的柔性不对称固态超级电容器的设计和制造提供有希望的见识。

更新日期：2017-10-06

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