Designing of Ag-MOF micro-rods decorated with AgNPs as a productive electrode material for hybrid-supercapacitors

• Developed innovative composite of Ag-MOF/AgNPs by physical blending technique. • Composite electrode material was structurally characterized by FTIR, XRD and SEM analysis. • Highest specific capacity achieved for Ag-MOF/AgNPs composite is 165C/g. • Hybrid supercapacitor is fabricated expresses high energy density of 10.67 Wh kg −1 with power density of 363 W kg −1 . • Device retains Remarkable cyclic stability of 104% after 3000 charge–discharge cycle. Here we have investigated electrochemical assessment (CV, GCD, EIS) of micro-nano structured composite electrode (Ag-MOF/AgNPs), was made by using physical blending technique that encompasses Ag-MOF and AgNPs in the ratio 1:1 wt%, respectively. The specific capacity estimated for Ag-MOF, AgNPs and their established composite (Ag-MOF/AgNPs) electrodes through GCD evaluation are 5C/g, 230C/g and 165C/g at current density of 0.5 A/g. Adding to promising specific capacity, Ag-MOF/AgNPs composite electrode material has publicized a stable higher discharge potential window and excellent cyclic stability performance among all electrodes. Hybrid-supercapacitor (HSC) is assembled in 1.0 M KOH solution by pairing Ag-MOF/AgNPs electrode with activated carbon electrode possesses promising energy density of 10.67 Wh kg −1 with notable power density of 363 W kg −1 at current density of 0.5 A/g. Further, HSC discloses significant cyclic stability performance by retaining 104 % capacity retention once trialed for continuous 3000 charge–discharge cycles.