用于高性能超级电容器电极的聚吡咯/碳纳米管二维异质结构

Two-Dimensional Heterostructure of PPy/CNT- for High-Performance Supercapacitor Electrodes.

作者信息

Lee Kwang Se, Kim Jung Yong, Park Jongwook, Ko Jang Myoun, Mugobera Sharon

机构信息

Department of Advanced Materials & Chemical Engineering, Kyungnam College of Information & Technology, 45 Jurye-ro, Busan 47011, Sasang-gu, Korea.

Department of Materials Science and Engineering, Adama Science and Technology University, P.O.Box 1888, Adama, Ethiopia.

出版信息

Materials (Basel). 2022 Aug 23;15(17):5804. doi: 10.3390/ma15175804.

DOI:10.3390/ma15175804

PMID:36079186

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC9457316/

Abstract

The nano-biocomposite electrodes composed of carbon nanotube (CNT), polypyrrole (PPy), and -bacteria were investigated for electrochemical supercapacitors. For this purpose, PPy/CNT- was successfully synthesized through oxidative polymerization. The PPy/CNT- electrode exhibited a high specific capacitance of 173 F∙g at the current density of 0.2 A∙g, which is much higher than that (37 F∙g) of CNT. Furthermore, it displayed sufficient stability after 1000 charge/discharge cycles. The CNT, PPy/CNT, and PPy/CNT- composites were characterized by x-ray diffraction, scanning electron microscopy, and surface analyzer (Brunauer-Emmett-Teller, BET). In particular, the pyrrole monomers were easily adsorbed and polymerized on the surface of CNT materials, as well as bacteria enhanced the surface area and porous structure of the PPy/CNT- composite electrode resulting in high performance of devices.

摘要

研究了由碳纳米管（CNT）、聚吡咯（PPy）和细菌组成的纳米生物复合电极用于电化学超级电容器。为此，通过氧化聚合成功合成了PPy/CNT-。PPy/CNT-电极在电流密度为0.2 A∙g时表现出173 F∙g的高比电容，远高于CNT的比电容（37 F∙g）。此外，在1000次充放电循环后它显示出足够的稳定性。通过X射线衍射、扫描电子显微镜和表面分析仪（Brunauer-Emmett-Teller，BET）对CNT、PPy/CNT和PPy/CNT-复合材料进行了表征。特别地，吡咯单体易于吸附并聚合在CNT材料表面，而且细菌增强了PPy/CNT-复合电极的表面积和多孔结构，从而使器件具有高性能。