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Fig. 4 | BMC Materials

Fig. 4

From: Supercapacitors with alternating current line-filtering performance

Fig. 4

Reproduced with permission from Ref [67]. Copyright 2016. Macmillan Publishers Limited

a Schematic of the N-dopant specifically unzipping of NCNTs; b SEM image of the unzipped nanostructure; c AFM image of the unzipped nanostructure; blue and red arrows indicate NCNT and graphene nanoribbons, respectively; d AC impedance phase angle versus the frequency (vertical dotted line indicates 120-Hz frequency); e imaginary part (C″) of specific capacitance versus the frequency; and f specific capacitance versus the frequency assuming a series RC circuit model.

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