Facile template-free synthesis of 3D hierarchical ravine-like interconnected MnCo2S4 nanosheet arrays for hybrid energy storage device

Carbon dots conjugated nanocomposite for the enhanced electrochemical performance of supercapacitor electrodes

“…These values were calculated using the following equation: 46 where C s is the specific capacity, m is the mass of active substance coated on the substrate, I is the discharge current, and Δ t is the discharge time. 47 The specific capacitance values of the CDs-nanocomposite were found to be 837, 741.8, 710.7, 654.2, 594.3, 561.5, 515, 483.2, and 462.6 F g −1 at current densities 10, 12, 14, 16, 18, 20, 24, 28, and 30 A g −1 , respectively.…”

“…where C s is the specic capacity, m is the mass of active substance coated on the substrate, I is the discharge current, and Dt is the discharge time. 47 The specic capacitance values of the CDs-nanocomposite were found to be 837, 741. The cycling stability of the electrode material was analyzed using the CV technique continuously for 3000 cycles at a constant scan rate of 80 mV s À1 within a potential window of 0-0.75 V to evaluate the electrochemical behavior of the CDsnanocomposite further.…”

Nanosilver‐Particles Integrated Ni3Sn2S2‐CoS Composite as an Advanced Electrode for High Energy Density Hybrid Cell

“…[17,18] In addition, exterminating the binders and conductive additives in the synthesis of electrode materials can diminish their electrical resistance as well as fabrication cost. [19] The hydro/solvothermal method is more expedient enough to synthesize the electrode materials directly on the target current collectors without the aid of binders/conductive additives. Nowadays, the ion-exchange process has been emerging as an attractive route in the design of novel multicomponent materials with interesting morphologies for use An ion-exchange process is a promising approach to design advanced electrode materials for high-performance energy storage devices.…”

Overview of transition metal-based composite materials for supercapacitor electrodes

“…Most binary metal sulde nanostructures have been reconstructed from their corresponding metal oxide/hydroxide precursors by applying the hydrothermal method followed by an anion exchange, based on the mechanism of the Kirkendall effect that offers the potential growth of tunable morphologies, such as nanoparticles, 88,89 nanowires, 90,91 nanotubes, [92][93][94] and nanosheets. 95,96 Kirkendall effect is a well-known phenomenon resulting from the mutual diffusion process of chemical constituents through an interface, featuring the difference in the atomic diffusion coefficients of chemical constituents. Because of the unbalanced diffusion rates between the two chemical constituents, vacancies will be introduced near the interface of the faster diffusing chemical constituent, leading to a change in the position of the initial interface during the diffusion process.…”