Carbon nanotube/graphene/MnO composite meterials for supercapacitor application

20^th International Conference on Emerging Materials and Nanotechnology

June 25-26, 2018 | Vancouver, Canada

An-Ya Lo and Fu-Kai Wang

National Chin-Yi University of Technology, Taiwan

Posters & Accepted Abstracts: J Material Sci Eng

Abstract :

A binder free method was proposed to bind carbon nanotubes on graphene for supercapacitor applications. Generally, carbon carbon nenotubes and graphene can not easy be dispersed well and stick on each other due to their physicalchemistry properties. It limits their combined application on supercapacitor electrodes, even each of them has some specific advantage for electrode, for instance, CNTs are good at long range conductivity, and graphene provides highest surface area among carbon materials. Besides, super-P gives greatest improvement for electrode especially reduce the interface resistance. Here in this report, a CNT/Graphene/ super-P/MnO composite electrode was proposed for supercapacitor applications. The effects of CNT/graphene ratio, and super-P and MnO contents have been studied. Both half cell test and full cell test were examined. Ex situ examinations such as SEM, TEM, SAD, EDS, and XRD were taken. The proposed composite materials exhibit uniform dispersion and good stability on cycle stability. Specific capacitance of 210 F/g was achieved. Other than supercapacitor applications, the proposed electrode also shows good potential for other electrochemical applications.