Sono-chemical assisted synthesis of carbon nanotubes-nickel phosphate nanocomposites with excellent energy density and cyclic stability for supercapattery applications

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

“…147 Also, between the Ni phosphate (NiP)/MWCNTs (10, 30, and 50 wt%) samples, NiP 50 CNT 50 revealed a better specific capacity of 845 C g −1 at 0.6 A g −1 and better supercapacitor performance with a specific capacity of 400 C g −1 at 0.4 A g −1 . 148 In another study, the MWCNTs/Ni–Mn–S were prepared and achieved excellent properties. The as-prepared MWCNTs/Ni–Mn–S (3 : 2) exhibit a specific capacitance of 1041 mA h g −1 at 1 A g −1 and good cycling stability.…”

“…The electrochemical properties of supercapacitors on the basis of Ni materials and CNTs composite electrodes are reported in Table 2 144–163 The nanocomposite CNTs/NiCo 2 S 4 showed remarkable capacitive properties. In the structure of the asymmetric supercapacitor, it exhibited energy and power densities of 43.3 W h kg −1 and 800 W kg −1 .…”

“…128 The Ni phosphate (NiP)/MWCNTs revealed a superior energy density of 94.4 W h kg −1 at 340 W kg −1 . 148 Ni ferrite nanoparticle/carboxymethyl cellulose-derived porous carbon (NiFe 2 O 4 /CPC) exhibited a major energy density of 135.2 W h kg −1 at 10 040 W kg −1 . 172 A supercapacitor with Ti 3 C 2 Tx MXene/NiCo 2 O 4 //AC electrodes delivered a high electrochemical performance with energy and power densities of 94.46 W h kg −1 and 2882 W kg −1 , respectively.…”

Prelithiated, Multiscale Nickel Phosphate Octahydrate Platelets by a Tailored Nanoarchitectonics Approach

“…Nanoparticles with tailored geometry offer improved electrochemical performance with regard to higher lithium solubility and gravimetric capacity as well as enhanced fracture toughness and fatigue resistance. ,,, The sonochemical approach has acquired therein considerable significance considering the environmentally benign and low-cost conditions, while enhancing the chemical reactivity. − The simplicity of this technique lies in exerting the effect of ultrasonic irradiation. Thereby produced acoustic cavitations generate bursts of high energy, yielding ‘hot spots’ of high temperature and pressure. − This method provides additional great benefits, including efficient exploitation of material and energy sources, minimized general hazard, fast reaction kinetics, narrow particle-size distributions, higher yield, and phase purity. , The thereby resulting dispersions are more homogenous and can render composites with higher uniformity, beneficial for energy storage materials, as reported for carbon nanotube-Ni 3 (PO 4 ) 2 nanocomposites …”

“…27,33 The thereby resulting dispersions are more homogenous and can render composites with higher uniformity, beneficial for energy storage materials, as reported for carbon nanotube-Ni 3 (PO 4 ) 2 nanocomposites. 29 However, high manufacturing costs as well as low mass loading and first-cycle Coulombic efficiency are associated with the use of nanostructured electrodes. 7 An effective strategy is the application of multiscale particles, comprising microparticles with nanoscale units, acquiring thereby the advantages of both scales.…”