Sodium 5-sulfosalicylate-assisted hydrothermal synthesis of a self-supported Co3S4−Ni3S2@nickel foam electrode for all-solid-state asymmetric supercapacitors

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.…”

“…Moreover, the supercapacitor of CS 4 –Ni 3 S 2 /F-SSS//AC/NF represents an energy density of 40.9 W h kg −1 with excellent durability. 189…”

“…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.…”

Evaluation of Electrochemical Performance of Cobalt Sulphide on Various Current Collectors

“…It has many stichometry configurations due to its multiple oxidation states, such as Co x S y , where x=1,2,3 and y=1,2,4,9. CoS, [2][3][4] Co 3 S 4 , 5 and Co 9 S 8 6 have all been investigated. Researchers used composite formation to improve the electrochemistry of cobalt sulphide.…”