Polypyrrole nanoparticles embedded nitrogen-doped graphene composites as novel cathode for long life cycles and high-power zinc-ion hybrid supercapacitors

Abstract

The well-designed network structure of synthetic polypyrrole (PPy) nanoparticles embedded on a nitrogen-doped graphene (N-rGO) surface was utilized as a cathode for aqueous zinc-ion hybrid supercapacitors.

Density functional theory investigation of the energy storage potential ofgraphene‐polypyrrolenanocomposites as high‐performance electrode for Zn‐ion batteries

“…These include a remarkable high areal capacitance of 927 mF cm −2 , decent rate of performance with 53% retention at a current density of 15 mA cm −2 28 . In another study, the maximum capacity, 145.32 mAhg −1 at 0.1 Ag −1 , was achieved by the manufactured zinc‐ion hybrid supercapacitors with optimized PPy/N‐rGO cathode composites 30 . Furthermore, the coin cell battery of Zn‐PPy/rGO//MnO 2 has a good initial discharge capacity of 325 mAhg −1 23 .…”

“…28 In another study, the maximum capacity, 145.32 mAhg À1 at 0.1 Ag À1 , was achieved by the manufactured zinc-ion hybrid supercapacitors with optimized PPy/N-rGO cathode composites. 30 Furthermore, the coin cell battery of Zn-PPy/ rGO//MnO 2 has a good initial discharge capacity of 325 mAhg À1 . 23 These comparisons highlight the impressive performance of the computed G/PPy nanocomposite.…”

“…29 Pattananuwat et al, manufactured a zinc-ion hybrid supercapacitors with an enhance PPy/N-rGO cathode composite, which produced good power and energy densities with stable retention capacity. 30 Another study found that the Zn-PPy/rGO// MnO 2 battery could produce an excellent initial discharge capacity of 325 mAh g À1 at 0.5A/g, while maintaining up to 50% of its capacity after 300 cycles. These studies show the potentials of using composites, made of graphene and polypyrrole as electrode materials for Zn-ion batteries and hybrid supercapacitors, underscoring the need for continuous and dedicated study to fully explore their applications in energy storage.…”

“…In comparison to other aqueous batteries and supercapacitors, this flexible Zn‐ion battery produced excellent power and energy densities with outstanding retention capacity 29 . Pattananuwat et al, manufactured a zinc‐ion hybrid supercapacitors with an enhance PPy/N‐rGO cathode composite, which produced good power and energy densities with stable retention capacity 30 . Another study found that the Zn‐PPy/rGO//MnO 2 battery could produce an excellent initial discharge capacity of 325 mAh g −1 at 0.5A/g, while maintaining up to 50% of its capacity after 300 cycles.…”

Synthesis of Cauliflower-like Reduced Graphene Oxide Nickel Sulfide Nanocomposites for the Vanadium Redox Battery and Supercapacitor Application

“…A wide variety of storage devices are used for grid-level energy storage, which includes technologies such as flywheels, hydropower, ultra-capacitors, redox flow batteries (RFBs), and many more. At present, researchers across the globe are predominantly interested in RFBs and supercapacitors due to the favorable qualities they possess, such as distinguishable power and energy (in the case of RFBs), dynamic performance, rapid reaction, and extended life cycles. − Supercapacitors may be used as the next stage of power sources and are presumably used in practical microelectronic devices such as roll-up displays, small bio-medical gadgets, and smart electronic devices. − …”