UV‐Assisted One‐Step Synthesis of Ternary Graphene/Polypyrrole/Silver Nanocomposites for Supercapacitors,Energy Technology

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UV‐Assisted One‐Step Synthesis of Ternary Graphene/Polypyrrole/Silver Nanocomposites for Supercapacitors
Energy Technology ( IF 3.6 ) Pub Date : 2021-01-19 , DOI: 10.1002/ente.202000966
Chunliu Liang ₁ , Chao Yang ₁ , Limin Zang ₁ , Qifan Liu ₂ , Jianhui Qiu ₂ , Yuqi Li ₁ , Wusheng Zuo ₁ , Xin Liu ₁

Affiliation

Herein, a simple and convenient one‐step method to prepare ternary graphene/polypyrrole/silver (GE/PPy/Ag) nanocomposites with UV irradiation is demonstrated. The prepared GE/PPy/Ag nanocomposites show the desired design, in which Ag nanoparticles wrapped by a PPy layer are deposited on the surface of GE. Such a structure can combine the advantages of the three components, including the large surface area of GE, high pseudocapacitance of PPy, and superior conductivity of Ag, and overcome the shortcomings of the three components, including restacking of GE, poor cycling stability of PPy, and reunion of Ag nanoparticles. In addition, the Ag nanoparticles can store/release charges via reversible Ag/Ag⁺ redox to further improve the electrochemical performance of GE/PPy/Ag nanocomposites as supercapacitor electrodes. The GE/PPy/Ag nanocomposite prepared with 90 min UV irradiation exhibits the highest areal capacitance (294.2 mF cm⁻²), and the symmetric quasi‐solid‐state supercapacitor retains 80.1% capacitance retention after 5000 cycles. The GE/PPy/Ag nanocomposite can also be formulated as screen‐printing ink to fabricate planar micro‐supercapacitors by the screen‐printing technique, for applications in flexible energy storage devices.

中文翻译：

紫外线辅助一步法合成三元石墨烯/聚吡咯/银纳米复合材料

本文展示了一种简单方便的一步法制备紫外辐射三元石墨烯/聚吡咯/银（GE / PPy / Ag）纳米复合材料。制备的GE / PPy / Ag纳米复合材料显示出所需的设计，其中被PPy层包裹的Ag纳米颗粒沉积在GE的表面上。这种结构可以结合三种组分的优点，包括GE的大表面积，PPy的高假电容和Ag的优异电导率，并克服了三种组分的缺点，包括GE的重堆积，PPy的循环稳定性差和Ag纳米粒子的团聚。此外，Ag纳米粒子可以通过可逆的Ag / Ag ⁺来存储/释放电荷氧化还原以进一步改善GE / PPy / Ag纳米复合材料作为超级电容器电极的电化学性能。用90分钟的紫外线辐照制备的GE / PPy / Ag纳米复合材料具有最高的面电容（294.2 mF cm ^-2），对称的准固态超级电容器在5000次循环后仍保持80.1％的电容保持率。GE / PPy / Ag纳米复合材料还可以配制成丝网印刷油墨，通过丝网印刷技术制造平面微型超级电容器，用于柔性储能设备。

更新日期：2021-03-04

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