Cracked bark-inspired ternary metallic sulfide (NiCoMnS4) nanostructure on carbon cloth for high-performance aqueous asymmetric supercapacitors

In this paper, we report a high-performance self-supported supercapacitor electrode composed of cracked bark-shaped Ni-Co-Mn ternary metallic sulfide (NiCoMnS4) nanostructure on carbon cloth prepared by simple one-step hydrothermal process and subsequent electrochemical treatment. The delivers high specific discharge capacity up to 2470.4 F g−1 at 1 A rate performances 1635.6 10 910.2 even 32 g−1. Cycling tests indicate that NiCoMnS4 could maintain >91.1% its initial nearly 100% Coulombic efficiency over 10,000 cycles 8 An aqueous asymmetric assembled with as the cathode, activated anode, mol L−1 KOH electrolyte an energy density 68.2 W h kg−1 850.1 retention 92.5% after 4 Given excellent performance material preparation our proposed device, study provides valuable foundation for development based electrodes properties potential application in supercapacitors.