Liu Ben, Zhang Xingying, Tian Du, Li Qi, Zhong Min, Chen Shaoyun, Hu Chenglong, Ji Hongbing
Key Laboratory of Optoelectronic Chemical Materials and Devices, Ministry of Education, School of Chemical and Environmental Engineering, Jianghan University, Wuhan 430056, China.
Fine Chemical Industry Research Institute, School of Chemistry, Sun Yat-sen University, Guangzhou 510275, Guangdong, China.
ACS Omega. 2020 Dec 8;5(50):32395-32402. doi: 10.1021/acsomega.0c04212. eCollection 2020 Dec 22.
Polyaniline with oriented nanorod arrays could provide high surface area and relaxed nanostructure to optimize ion diffusion paths, thus enhancing the performance of the device. In this paper, we designed an all-solid symmetrical supercapacitor with good performance based on polyaniline nanorod arrays in situ-grown on a graphite flake free-standing substrate. The specific capacitance, cycle stability, and energy density of the prepared supercapacitor device were 135 F/g, 75.4% retention after 1500 cycles, and the energy density is 18.75 W h/kg at a power density of 500 W/kg. The good performance of the supercapacitor device was obviously related to the oriented nanorod arrays of polyaniline/graphite flakes. In order to find the application of the prepared supercapacitor device, the tandem device consisting of three single supercapacitor devices connected in series had been used to drive small electronic equipment. The red light-emitting diode and chronograph could be easily driven by the 3-series supercapacitor devices. These results indicated that the prepared supercapacitor device based on the polyaniline/graphite flake electrode had potential applications in energy storage devices.
具有定向纳米棒阵列的聚苯胺可以提供高表面积和宽松的纳米结构，以优化离子扩散路径，从而提高器件的性能。在本文中，我们基于原位生长在无支撑石墨薄片基底上的聚苯胺纳米棒阵列设计了一种性能良好的全固态对称超级电容器。所制备的超级电容器器件的比电容、循环稳定性和能量密度分别为135 F/g、1500次循环后保留75.4%，在功率密度为500 W/kg时能量密度为18.75 W h/kg。超级电容器器件的良好性能明显与聚苯胺/石墨薄片的定向纳米棒阵列有关。为了探索所制备的超级电容器器件的应用，由三个串联连接的单个超级电容器器件组成的串联器件已被用于驱动小型电子设备。红色发光二极管和计时器可以很容易地由三串联超级电容器器件驱动。这些结果表明，所制备的基于聚苯胺/石墨薄片电极的超级电容器器件在储能器件中具有潜在应用。
