2D Flower-like Porous Nanostructures of Layered SnS₂ for High-Performance Supercapacitors: Correlating Theoretical and Experimental Studies

Abstract

Porous flower-like SnS2 synthesized using the co-precipitation method can be used as a high-performance electrode material. The obtained 2D-like flake morphologies show excellent electrochemical performance. The performance of such morphologies grossly supersedes the performance of solid morphologies. The reasons are explained in detail. The improved performance of this porous architecture can be attributed to the enhanced active specific surface area with the accessibility of a larger number of redox active sites on the surface, which facilitates electrolyte ion diffusion during electrochemical responses. To explain the experimental results, a theoretical model is being reported, which establishes the role of porosity in the diffusion process of electrolyte ions within such materials. The porous material leads to a ∼50% increase in the specific capacitance, without compromising rate capabilities or cycling stability, making it ideal for next-generation devices.

Two-Dimensional V2O5 Nanosheets as an Advanced Cathode Material for Realizing Low-Cost Aqueous Aluminum-Ion Batteries

“…The average dimension of the sheet was 300 nm × 300 nm, with a width of 100 nm. This type of two-dimensional sheet-like nanostructure can facilitate very high accessible area, which will ensure enhanced rate capability during electrochemical response . This interconnected structure would also allow the intercalation and deintercalation of Al 3+ , leading to enhanced electrochemical performance of the electrode material.…”

“…This type of twodimensional sheet-like nanostructure can facilitate very high accessible area, which will ensure enhanced rate capability during electrochemical response. 12 This interconnected structure would also allow the intercalation and deintercalation of Al 3+ , leading to enhanced electrochemical performance of the electrode material. As V 2 O 5 generally suffers from poor cycling stability and low conductivity, a sheet-like structure can negate these discrepancies.…”

Time-dependent exfoliation study of MoS2 for its use as a cathode material in high-performance hybrid supercapacitors

“…The specific energy and power of the devices were calculated at various current densities using the following relations: 37 : and P = E / t where C is the specific capacitance at a particular current density, V is the operating voltage window, and t is the total discharge time. The Ragone plot is depicted in Fig.…”

Organic Supercapacitors as the Next Generation Energy Storage Device: Emergence, Opportunity, and Challenges

“…Polytetrafluoroethylene (PTFE), Nafion, polyvinylidene difluoride (PVDF), etc [37–39] . In the electrode, the common electrode materials are carbons, transition metal oxides, transition metal sulphides, MXenes, organic aromatic compounds, polymers, etc [40–43] …”

“…[ 37 , 38 , 39 ] In the electrode, the common electrode materials are carbons, transition metal oxides, transition metal sulphides, MXenes, organic aromatic compounds, polymers, etc. [ 40 , 41 , 42 , 43 ]…”