Fabrication of MnCoS Thin Films Deposited by the SILAR Method with the Assistance of Surfactants and Supercapacitor Properties

Compact MnCoS thin films on a nickel foam (NF) substrate were prepared by successive ionic layer adsorption and reaction (SILAR) method, two surfactants (SDS CTAB) used to improve the wettability of NF. The characterized scanning electron microscopy (SEM), transmission (TEM), X-ray diffraction (XRD), photoelectron spectroscopy (XPS). supercapacitive properties evaluated cyclic voltammetry (CV), galvanostatic charge–discharge (GCD), impedance (EIS). results show that while NF was first dipped in surfactant solution, followed mixture Mn2+ Co2+ or Na2S load density NF’s surface significantly increased delivered much higher specific capacitance than film formed without assistance surfactants, which 2029.8 F g−1 (MnCoS-CTAB), 1500.3 (MnCoS-SDS), 950.4 (MnCoS-H2O) at current 1 A 3 M KOH aqueous solution. When 10 g−1, MnCoS-CTAB with highest exhibited 1371.9 71% capacity retention up 1000 cycles, showing good rate performance cycle stability.