Enhanced synergistic redox activity of SrCoS/PANI for hybrid energy storage and oxygen evolution reaction

Abstract

Supercapacitors (SCs) and secondary batteries (SBs) are commonly utilized for energy storage, although each has some limitations: low energy density (Ed) and power density (Pd), respectively. To address these issues, a hybrid supercapacitor is a new emerging technique known as supercapattery, which combines both of these devices to optimum the Ed and Pd in a single setting. The hydrothermal method was adopted to synthesize a cost-effective, eco-friendly, and non-toxic SrCoS/PANI, a composite material for optimum results of supercapattery. Crystallinity and morphology study of synthesized nanocomposites strontium cobalt sulfide with Polyaniline (SrCoS/PANI) were examined using SEM and XRD techniques. Initially, the performance was tested using a three-electrode setup of nanocomposites (SrCoS/PANI) in 1 M KOH electrolyte. The effectiveness of a SrCoS/PANI-activated carbon two-electrode supercapattery was examined through cyclic CV, GCD, and EIS techniques. In the two electrodes setup, the device performs admirably with an astonishing specific capacity of 139.4 C/g, a high Ed of 29.56 Wh/kg, and a high Pd of 800 W/kg at 1.0 A/g. The cyclic stability was tested by putting the device through 5000 charging and discharging cycles, which maintained 91.65 % of its Specific capacity (Qs). A hybrid nanocomposite (SrCoS/PANI) device was accomplished, with exceptional electrochemical capabilities at a low price making them a fascinating active material with potential applications in supercapattery technology. The electrocatalytic performance of the synthesized nanostructure (NSs) was studied comprehensively with regard to an oxygen evolution reaction (OER).

Effect of electrolyte optimization on nitrogen-doped MXene (Ti3C2Tx) coupled with Cu–BTC MOF for a supercapattery and the hydrogen evolution reaction

“…The Dunn model equations serve as a tool for exploring capacitive and diffusive values (eqn (9)–(10)). 89 I ( v ) = k 1 v + k 2 v 1/2 …”

Synergistic advancements with Mn-MOF/Nb2CTx electrodes in bisolvent-in-salt (BSiS) electrolytes for supercapacitor and hydrogen evolution reaction

“…In the last ten years, there has been notable advancement in creating efficient supercapacitor electrodes. These improvements use 2D nanomaterials [17], conductive polymers [18], metallic oxides/hydroxides [19], as well as their combinations, and many more [20,21]. MXene, which are 2D transition metal carbides, nitrides, or carbonitrides, has demonstrated significant promise for energy storage.…”

“…The utilisation of a combined Mn-MOF/Nb 2 CT x electrode has the potential to enhance the electrochemical performance of supercapacitors. As far as we know, there has been no synthesis of Mn-MOF with Nb 2 CT x for the purpose of fabricating supercapacitor electrodes [20,21].…”