As redox-active based supercapacitors are known as highly desirable next-generation supercapacitor electrodes, the targeted design of two ferrocene-functionalized (Fc(COOH)
2) clusters based on coinage metals, [(PPh
3)
2AgO
2CFcCO
2Ag(PPh
3)
2]
2 ⋅ 7 CH
3OH (SC
1: super capacitor) and [(PPh
3)
3CuO
2CFcCO
2Cu(PPh
3)
3] ⋅ 3 CH
3OH (SC
2), is reported. Both structures are fully characterized by various techniques. The structures are utilized as energy storage electrode materials, giving 130 F g
−1 and 210 F g
−1 specific capacitance at 1.5 A g
−1 in Na
2SO
4 electrolyte, respectively. The obtained results show that the presence of Cu
I instead of Ag
I improves the supercapacitive performance of the cluster. Further, to improve the conductivity, the PSC
2 ([(PPh
3)
2CuO
2CFcCO
2]
∞), a polymeric structure of SC
2, was synthesized and used as an energy storage electrode. PSC
2 displays high conductivity and gives 455 F g
−1 capacitance at 3 A g
−1. The PSC
2 as a supercapacitor electrode presents a high power density (2416 W kg
−1), high energy density (161 Wh kg
−1), and long cycle life over 4000 cycles (93 %). These results could lead to the amplification of high-performance supercapacitors in new areas to develop real applications and stimulate the use of the targeted design of coordination polymers without hybridization or compositions with additive materials.
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