Half-lantern Pt(ii) and Pt(iii) cyclometalated binuclear complexes, bridged with various heterocyclic thiolate ligands, were synthesized and studied by electrochemical and photophysical techniques.

In the present work, we report the successful fabrication of dandelion-like Nickel–Cobalt Sulfide@Polypyrrole microspheres through the hydrothermal method and its possible application as a binder-free electrode in supercapacitors. This electrode exhibited low charge transfer resistance with a remarkable specific capacitance of 2554.9 F g−1 at 2.54 A g−1, in addition to considerable cycle life stability. Also, an asymmetric device was prepared using NiCo2S4@PPy/NF as positive and rGO/NF as negative electrodes. This asymmetric supercapacitor exhibited a specific capacitance of 98.9 F g−1 at 1.84 A g−1 and delivered an energy density of 35.17 Wh kg−1 at a power density of 1472 W kg−1. Such a remarkable performance can be originated from the synergy effect of NiCo2S4 and PPy and the direct deposition of the composite on the current collector. Our findings suggest the dandelion-like NiCo2S4@PPy as a promising material for making high-performance supercapacitors.

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