Mothkuri Sagar, Gupta Honey, Jain Pawan K, Rao Tata Narsinga, Padmanabham Gade, Chakrabarti Supriya
Centre for Carbon Materials, International Advanced Research Centre for Powder Metallurgy and New Materials, Hyderabad, P.O. Balapur, Telangana 500005, India.
Nanotechnology and Integrated Bio-Engineering Centre (NIBEC), School of Engineering, Ulster University, Newtownabbey BT37 0QB, UK.
Micromachines (Basel). 2021 Feb 20;12(2):213. doi: 10.3390/mi12020213.
Functionalized carbon nanotube (FCNT) and Manganese Oxide (MnO) nanoflower hybrid material was synthesized using hydrothermal technique as a promising electrode material for supercapacitor applications. The morphological investigation revealed the formation of 'nanoflower' like structure of MnO connected with FCNT, thus paving an easy path for the conduction of electrons during the electrochemical mechanism. A significant improvement in capacitance properties was observed in the hybrid material, in which carbon nanotube acts as a conducting cylindrical path, while the major role of MnO was to store the charge, acting as an electrolyte reservoir leading to an overall improved electrochemical performance. The full cell electrochemical analysis of FCNT-MnO hybrid using 3 M potassium hydroxide (KOH) electrolyte indicated a specific capacitance of 359.53 F g, specific energy of 49.93 Wh kg and maximum specific power of 898.84 W kg at 5 mV s. The results show promise for the future of supercapacitor development based on hybrid electrode materials, where high specific energy can be achieved along with high specific power and long cycle life.
采用水热技术合成了功能化碳纳米管（FCNT）与氧化锰（MnO）纳米花杂化材料，作为超级电容器应用中一种很有前景的电极材料。形态学研究表明形成了与FCNT相连的MnO“纳米花”状结构，从而为电化学机制过程中的电子传导铺平了道路。在杂化材料中观察到电容性能有显著改善，其中碳纳米管充当导电圆柱路径，而MnO的主要作用是存储电荷，充当电解质储存库，从而整体提高了电化学性能。使用3M氢氧化钾（KOH）电解质对FCNT-MnO杂化物进行的全电池电化学分析表明，在5mV/s时比电容为359.53F/g，比能量为49.93Wh/kg，最大比功率为898.84W/kg。结果表明基于杂化电极材料的超级电容器发展前景广阔，有望实现高比能量、高比功率和长循环寿命。
