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SubPc-Br/NiMoO4 composite as a high-performance supercapacitor electrode materials

In the present paper, a facile hydrothermal synthesis was successfully used to obtain a novel SubPhthalocyanine/Nickel molybdate (SubPc-Br/NiMoO4) composite electrode material for a higher-performance super-capacitor. SEM and XRD investigations revealed… Click to show full abstract

In the present paper, a facile hydrothermal synthesis was successfully used to obtain a novel SubPhthalocyanine/Nickel molybdate (SubPc-Br/NiMoO4) composite electrode material for a higher-performance super-capacitor. SEM and XRD investigations revealed that SubPc-Br particles were uniformly dispersed on the surface of NiMoO4 microspheres and kept the crystal formation of NiMoO4 during the combination of SubPc-Br and NiMoO4, giving the possibility to obtain high power density. The excellent pseudo-capacitance properties of SubPc-Br/NiMoO4 were also confirmed by a series of electrochemical experiments and showed that SubPc-Br significantly enhanced the redox strength and charge transfer characteristics of the NiMoO4. The as-prepared electrode had a high specific capacitance of 1292 F g−1 at a scan rate of 1 mV s−1. Additionally, in comparison with a separate NiMoO4, the cycle stability of the SubPc-Br/NiMoO4 super-capacitor is improved by 12.9% after 1000 cycles. The enhanced performances could be mainly attributed to the unique nanostructure and a larger contact area of SubPc-Br/NiMoO4. The materials obtained using this technique and the unique properties of cycle stability are attractive. This technique has an increased potential to enlarge the applicability of the electrochemical industry.

Keywords: subpc nimoo4; composite high; nimoo4 composite; performance; electrode

Journal Title: Journal of Applied Electrochemistry
Year Published: 2020

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