Ni-MOF composite polypyrrole applied to supercapacitor energy storage

Abstract

The synthesis of Ni-MOF@PPy and its use in assembling Ni-MOF@PPy//AC asymmetric supercapacitors.

Metal–organic frameworks for next-generation energy storage devices; a systematic review

“…The composite material had a specific capacitance of 1815.4 F g À1 at a current density of 1 A g À1 . 162 Pristine Fe-MOF has been used as an electrode material in supercapacitors due to their unique structures. In comparison with batteries which are associated with high energy density, supercapacitors are efficient electrical energy storage devices with a high power density.…”

Recent advances in Ni-materials/carbon nanocomposites for supercapacitor electrodes

“…The various supercapacitors based on the Ni materials//active carbon electrodes have been employed in electrochemical applications, and the novel results of the reported papers are tabulated in Table 4. 182–219 The utilization of active carbon in supercapacitors highlights its valuable role in improving energy storage capabilities and supporting advancements in various fields where efficient power delivery and rapid energy transfer are essential. Ni(OH) 2 /ZIF-67-derived CoS core/carbon cloth (Ni(OH) 2 /CoS/CC) was used in the supercapacitor of Ni(OH) 2 /CoS/CC (cathode)//AC (anode) that revealed a remarkable energy density as well as its excellent electro-catalytic activity towards methanol oxidation.…”

“…Ni-based metal–organic framework (Ni-MOF)/polypyrrole (PPy) had a specific capacitance of 1815.4 F g −1 and Ni-MOF/PPy(+)//(−)AC supercapacitors can provide capacitance retention of 90.2% after 3000 cycles, an energy density of 38.5 W h kg −1 and power density of 7001 W kg −1 . 190 Ni-metal–organic framework (MOF)/nanocarbon (NC) electrode materials were synthesized and delivered 828 F g −1 . The supercapacitor of Ni-MOF/NC//AC showed a capacitance retention of 100% after 5000 cycles.…”

“…They reported the asymmetric supercapacitor with Fe 3 C@CNF-650 (−)//CNF@NiCoS-650 (+) electrodes achieved an energy density of 43.2 W h kg −1 at 800 W kg −1 . The electrochemical processes involve fast reversible redox reactions of Ni 2+ /Ni 3+ , Co 2+ /Co 3+ , and Co 3+ /Co 4+ reacting with OH − anions and can be obtained from: 185–196 NiS + OH − ↔ NiSOH + e − CoS + OH − ↔ CoSOH + e − CoSOH + OH − ↔ CoSO + H 2 O + e − SnNiCoS sulfide in the supercapacitors showed the best performance in that a specific capacitance of 18.6 F cm −2 and an energy density of 937.2 μW h cm −2 was achieved. 197 Zhao et al 198 prepared the CuCo 2 O 4 @NiMn LDH//AC as supercapacitor electrodes and exhibited a specific capacity of 2156.53 F g −1 with a rate capability retention of 94.6% after 2500 cycles.…”

Carbon Nanotubes and Silica@polyaniline Core–Shell Particles Synergistically Enhance the Toughness and Electrical Conductivity in Hydrophobic Associated Hydrogels

“…Conductivity is a highly valued parameter to examine for strain sensor applications. It has been found by the research staff that conducting polymers (e.g., polyaniline, − poly-pyrrole, − polyacetylene , ), carbon nanomaterials (e.g., graphene oxide, − carbon nanotubes , ), and metal nanoparticles with inherent electronic conductivity have been widely used to optimize the conductive function of hydrogels. Among them, polyaniline exhibits excellent electrical conductivity, and a series of works have been carried out to make it stable in the hydrogel network.…”