Construction of light-weight and flexible vanadium nitride coated graphite paper electrodes for supercapacitors

A hybrid GaN/Ga2O3 structure anchored on carbon cloth as a high-performance electrode of supercapacitors

“…2 A variety of metal nitrides have been employed as supercapacitor electrodes, and they have exhibited an excellent specific capacitance (15-951.3 mF cm −2 , or 82-990 F g −1 ) and a high energy density (16.5-162 W h kg −1 ) at a large corresponding power density (7.3-54 000 W kg −1 ). [2][3][4][5] Utilization of these metal nitrides as SC electrode materials, however, encountered some problems. For example, TiN has poor electrochemical stability in an aqueous medium, 6 VN suffers from cycle-induced capacitance loss due to irreversible oxidation reaction on the surface, 7 and NbN has a lower value of pseudo-capacitance (73 F g −1 ) due to a lower oxidation state.…”

A V–Ni-based nitride heterostructure as a highly efficient electrode for flexible all-solid-state supercapacitors

“…The areal capacitance is much higher than that of some reported studies. 40,41 Furthermore, to deduce the origin of the superior super-capacitive performance of the VN/Ni 3 N-Ni/CC electrode, the electrochemical reaction kinetics was investigated by electrochemical impedance spectrometry (EIS) tests as shown in Fig. 3c.…”