A dual metal organic framework based on copper-iron clusters integrated sulphur doped graphene as a porous material for supercapacitor with remarkable performance characteristics

Metal–Organic Framework Derived Bimetallic Materials for Electrochemical Energy Storage

“…An operational voltage of 1.8 V was obtained for the constructed symmetric supercapacitor, which displays exceptional stability over 10 000 cycles and preserves ≈92.5 % of its initial specific capacitance at a current density of 1.0 A g −1 . Therefore, the above findings indicate that the CuFeBTC/S‐GNS hybrid nanocomposite can be employed as a useful electrode material in advanced energy storage systems [69] …”

“…Furthermore,electrolyte ions can readily penetrate into the active material, reaching the active redox sites in the bimetallic MOF resulting in alarge specific capacitance.Anoperational voltage of 1.8 Vwas obtained for the constructed symmetric supercapacitor,w hich displays exceptional stability over 10 000 cycles and preserves % 92.5 % of its initial specific capacitance at ac urrent density of 1.0 Ag À1 .T herefore,t he above findings indicate that the CuFeBTC/S-GNS hybrid nanocomposite can be employed as au seful electrode material in advanced energy storage systems. [69] It has been found in recent investigations that preparing composites of carbon-encapsulated metal phosphide NPs can increase their stability and rate efficiency even further. The electronic conductivity of the composites is enhanced by introducing carbon, leading to fast electron transport.…”

The Application of Metal–Organic Frameworks and Their Derivatives for Supercapacitors

“…The Ni-BPDC/GO composite yields a charge-transfer resistance (R ct ) value of 2.23 Ω, smaller than that of Ni-BPDC with 5.96 Ω, suggesting the easier transition between ion transport and electron conduction of Ni-BPDC/GO composite. Recent works reveal that the bimetallic M-BTC and its MOF/carbonaceous-material composites, such as CuFeBTC/S-GNS (S-GNS = sulfur doped graphene nanosheet) [ 40 ] and NiCo-BTC/rGO [ 41 ], show the same trend. The NiCo-BTC/rGO with the rod-like morphology is confirmed to exhibit higher specific capacitance (958 vs. 565 F g −1 ) and longer cycle life than the NiCo-BTC electrode (109% vs. 94% of its initial capacitance over 5000 cycles at 1 A g −1 ).…”

Fabrication of Mn-Ce Bimetallic Oxides as Electrode Material for Supercapacitors with High Performance

“…Because of global energy needs, consumption of fossil fuels and worsening environmental pollution, there is an urgent need to develop alternative and environment-friendly materials for sustainable storage and retrieval of electrical energy. 1,2 To that end, supercapacitors (also known as electrochemical capacitors or ECs) have emerged as a promising alternative to rechargeable batteries because of their considerable advantages such as ultrahigh power density, fast charge-discharge capability, excellent reversibility, superior operating lifetimes. 3,4 With these superb properties, supercapacitors have been used in various applications such as in lightweight electronics, memory actuators, standby power systems and hybrid electric vehicles (HEVs).…”

“…3,4 With these superb properties, supercapacitors have been used in various applications such as in lightweight electronics, memory actuators, standby power systems and hybrid electric vehicles (HEVs). 1,5 Depending on the energy storage mechanism, supercapacitors may be classified into two types: electric double-layer capacitors (EDLCs) and pseudocapacitors. 6 EDLCs store energy mainly by electrostatic attraction to generate charge accumulation in the electric double layer at the electrode and electrolyte interface.…”