Abstract
In recent years, flexible electronic devices pursued for potential applications. The design and the fabrication of a novel flexible nanoarchitecture by coating electrical conductive MWCNT fiber with ultrathin films of MnO2to achieve high specific capacitance, for micro-supercapacitors electrode applications, are demonstrated here. The MWCNT/MnO2composite fiber electrode was prepared by the electrochemical deposition which was carried out through using two different methods: cyclic voltammetry and potentiostatic methods. The cyclic voltammetry method can get “crumpled paper ball” morphology MnO2which has bigger specific capacitances than that achieved by potentiostatic method. The flexible micro-supercapacitor was fabricated by twisting two aligned MWCNT fibers and showed an area specific capacitance of 2.43 mF/cm2. The flexible micro-supercapacitors also enable promising applications in various fields.
Highlights
In the past several years, rapid progress in flexible technology applied a large number of innovative products such as skin sensors, wearable displays, electronic paper, organic lightemitting diode (OLED) [1,2,3]
In the past several years, because of their unique structures which provide them with intriguing chemical and physical performances, for example, excellent electronic properties, carbon nanotubes have been vastly researched for broad types of applications [6,7,8,9,10]
The MnO2/multiwalled carbon nanotubes (MWCNTs) fiber composite electrode was prepared by the electrochemical deposition which was carried out through using two different methods: cyclic voltammetry and potentiostatic method
Summary
In the past several years, rapid progress in flexible technology applied a large number of innovative products such as skin sensors, wearable displays, electronic paper, organic lightemitting diode (OLED) [1,2,3]. Most of flexible electrodes use both polymers and thin films of inorganic oxides as the conducting layers. The electrical properties of these oxides can be good; there was a significant deficiency for the low tensile fracture strains of mechanical characteristics which were not optimally suitable for use in flexible devices. In the past several years, because of their unique structures which provide them with intriguing chemical and physical performances, for example, excellent electronic properties, carbon nanotubes have been vastly researched for broad types of applications [6,7,8,9,10]. We demonstrate the design and the fabrication of a novel flexible nanoarchitecture by coating the electrical conductive multiwalled carbon nanotubes (MWCNTs) fiber with ultrathin films of MnO2 to achieve high specific capacitance for micro-supercapacitors electrode applications
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