High-performance asymmetrical hybrid supercapacitor based on yolk-shell Ni3P nanoparticles constructed by selective etching

In situ synthesis of advantageously united copper stannate nanoparticles for a new high powered supercapacitor electrode

“…Obviously, it can be seen that with the increase of scanning speed, the anodic and cathodic peaks continuously shift to more positive and negative potentials respectively, which suggests the great rate capability of electronic and ionic transportation at the interface of the electroactive material/electrolyte. 5,12 The observed redox peak is due to the charge-transfer kinetics of Cu 2+ /Cu 3+ in the metal tin. The CV curve consists of a pair of well-defined redox peaks, attributing to the interaction between Cu 2 SnO 4 and electrolyte ion, which can be defined by the following equations:Cu 2 SnO 4 + OH − + H 2 O ↔ SnOOH + 2CuOOH + e − CuOOH + OH − ↔ CuO + H 2 O + e − SnOOH + OH − ↔ SnO 2 + H 2 O + e − …”

“…In recent years, electrochemical energy conversion and storage systems 1–4 have attracted more and more attention due to the ever-growing demand of modern society for multifarious renewable and high-efficiency energy storage in the current electronic industry, state of fossil fuel depletion, and following that environmental pollution problems. 5,6 Among these devices, supercapacitors (SCs) have become particularly interesting due to their superior properties including excellent security, high power density, quick charge–discharge rate, better cycling lifespan, and environmental friendliness. 7,8 Meanwhile, SCs, as state-of-the-art devices, have been used in many fields such as in hybrid electric vehicles, high-power laser devices, digital telecommunication systems, and smart electricity grid devices, etc.…”

Status review of nickel phosphides for hybrid supercapacitors

“…The synthesis of NPs can be carried out by various strategies, such as hydrothermal, 43,62–72 solvothermal, 73–83 electrodeposition, 58,84–86 ball milling, 87 phosphorization, 88–93 colloidal synthesis, 94 chemical vapour deposition. 95 Various interesting morphologies of NPs have been reported, including nanoparticles, 68,71,73,75–77,81,83,91,92 nanospheres, 66,85 nanoflakes, 80,86 nanofibres, 82 nanorods, 88 nanosheets, 43,62–64,89 nanotubes, 65 nanocapsules, 72 nanoplates, 59,94 nanowires, 96 microspheres, 70,74,78,90 and microstructures. 87,93 The different nano/microstructures and morphologies of NPs exhibit diverse electrochemical activities (Table 2).…”

“…However, Ding et al 81 developed an HSC with yolk–shell Ni 3 P as a cathode and AC as an anode. The device was analyzed with a potential window of 1.2 V in 6 M KOH.…”

“…The synthesis of NPs can be carried out by various strategies, such as hydrothermal, 43,[62][63][64][65][66][67][68][69][70][71][72] solvothermal, [73][74][75][76][77][78][79][80][81][82][83] electrodeposition, 58,[84][85][86] ball milling, 87 phosphorization, [88][89][90][91][92][93] colloidal synthesis, 94 chemical vapour deposition. 95 Various interesting morphologies of NPs have been reported, including nanoparticles, 68,71,73,[75][76][77]81,83,91,92 nanospheres, 66,85 nanoflakes, 80,86…”