A flexible 3D N-doped reduced graphene oxide(N-RGO)/carbon nanotube(CNT)eMnO_(2) hybrid film was constructed with outstanding supercapacitor,excellent oxygen reduction reaction(ORR)and good sensing *** resultant hybri...
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A flexible 3D N-doped reduced graphene oxide(N-RGO)/carbon nanotube(CNT)eMnO_(2) hybrid film was constructed with outstanding supercapacitor,excellent oxygen reduction reaction(ORR)and good sensing *** resultant hybrid film possessed large specific capacitances of 418 F g^(-1) and 209 mF cm^(-2) in aqueous and solid electrolytes,and outstanding capacitance retentions of 95% and 94% were obtained for both electrolytes after experiencing 5000 cycles.A simple supercapacitor based on the resultant flexible hybrid film was further fabricated with a much smaller time constant τ0(0.38 s)than that of typical activated-carbon supercapacitors,suggesting a quick response ***,the assembled supercapacitor device showed high energy densities of 45.72 and 92.13 Wh kg^(-1) and simultaneously sustained large power densities of 12,526 and 15873 W kg^(-1) under a scan rate of 50 mV s^(-1) in aqueous and solid electrolytes,***,the resultant flexible film showed excellent performance in the ORR and can also be used to assemble a strain sensor with an excellent sensing performance for bending strain.
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