The role of defects in the nonlinear optical absorption behavior of pristine and Co-doped V2O5 layered 2D nanostructures

Menon, P. Soumya; Thomas, Susmi Anna; Anjana, M.P.; Beryl, C.; Sajan, D.; Vinitha, G.; Philip, Reji

doi:10.1016/j.jallcom.2022.164413

Cited by 12 publications

(2 citation statements)

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“…[ 52 ] The exact determination of crystal structure and profile fitting is done with Rietveld method in the software FullProf Studio, version 2. [ 53 ] The experimental data were fitting with standard patterns available at the Inorganic Crystal Structure Database (ICSD) to find the crystalline phases of 2D NSN. The as‐synthesized 2D NSN matches with the trigonal phase system having space group R3m and it possess an acentric symmetry with a = b = c = 5.64 Å and α = β = 90° and γ = 120°.…”

Section: Resultsmentioning

confidence: 99%

2D Nickel Sulfide Electrodes with Superior Electrochemical Thermal Stability along with Long Cyclic Stability for Supercapatteries

Thomas,

Cherusseri,

N. Rajendran

2024

Energy Tech

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Supercapatteries are contemporary electrochemical energy‐storage devices that bridge the gap between the conventional supercapacitors and rechargeable batteries. Supercapatteries utilize battery‐type electrode‐active materials for their charge storage. Among the various futuristic materials, transition‐metal dichalcogenides receive prominent attention due to their excellent charge‐storage capabilities. Herein, the microwave‐assisted hydrothermal synthesis of layered two‐dimensional (2D) nickel sulfide nanosheets (NSN) and their application as electrode‐active materials in high‐performance asymmetric supercapatteries are reported. The layered 2D architecture is preferred for the electrode‐active materials as the layered electrode nanostructure provides a hindrance‐free movement to the electrolyte ions through it during the charge‐storage process that include intercalation/deintercalation mechanisms. The electrochemical thermal stability of the 2D NSN electrode reveals that its stability in KOH (aqueous) electrolyte is better than that in LiOH (aqueous) and NaOH (aqueous) electrolytes. The supercapattery electrode synthesized using 2D NSN exhibits excellent electrochemical charge‐storage performances bearing a maximum specific capacity of 594.77 C g−1 (an equivalent mass‐specific capacitance of 991.29 F g−1) in 2 M KOH (aqueous) electrolyte. The electrochemical cycling performance of the 2D NSN electrode shows a stability over 40 000 cycles without any significant capacity loss. An asymmetric supercapattery device fabricated with 2D NSN electrode as positrode and activated carbon as negatrode exhibits a maximum mass‐specific capacity of 143.58 C g−1 with a corresponding energy density of 29.91 Wh kg−1 in 2 M KOH (aqueous) electrolyte.

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Section: Resultsmentioning

confidence: 99%

2D Nickel Sulfide Electrodes with Superior Electrochemical Thermal Stability along with Long Cyclic Stability for Supercapatteries

Thomas,

Cherusseri,

N. Rajendran

2024

Energy Tech

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“…To enhance the capacitance of NiS 2 , adding carbon nanomaterial is a not a good idea because they store charges by means of electrochemical double layer (EDL), hence exhibiting low specific capacitance. The electrode-active materials such as transition metal oxides (TMOs) [53,54] and metal-organic frameworks (MOFs) [55,56] are the best choices to prepare hybrid/nanocomposites with NiS 2 to achieve high specific capacitance. TMOs and MOFs store charges in terms of redox reactions, hence their capacitance is very high when compared to that of the other types of electrodeactive materials.…”

Section: Electrochemical Performances Of Nis 2 -Based Electrodes For ...mentioning

confidence: 99%

Nickel Disulfide (NiS₂): A Sustainable Low‐Cost Electrode Material for High‐Performance Supercapacitors

Thomas,

Cherusseri,

Rajendran

2024

Energy Tech

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In the family of transition metal sulfides, nickel disulfide (NiS2) received significant attention in the recent past, particularly as an electrode‐active material for supercapacitors due to its high specific capacitance, high power density, long cyclic stability, and low cost. A detailed overview on the supercapacitor applications of NiS2 is lacking in the literature. In this review article, the unique features of NiS2 in terms of its various methods of synthesis, characterizations, and electrochemical performance evaluations are described. This review provides an in‐depth understanding on the unique properties of ultrathin nanostructured NiS2 such as structural properties, electronic properties, optical properties, and so on. Later, the various methods of synthesis including hydrothermal method, solvothermal method, solvent‐free approach, and so on are reviewed. Further, the strategies are discussed to improve the electrochemical performance of NiS2 by preparing hybrids or nanocomposites with other types of electrode‐active materials. The influence of electrode nanostructure and surface morphology on the charge storage is discussed with the help of specific examples. Furthermore, the potential challenges and future perspectives of NiS2 for commercial supercapacitors are examined. This review proclaims the development of novel approaches and strategies for the effective utilization of NiS2‐based electrodes for high‐performance low‐cost supercapacitors.

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Functionalized Carbon Nanostructures for Hydrogen Storage

Thomas,

Cherusseri,

Rajendran

2024

Handbook of Functionalized Carbon Nanostructures

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The role of defects in the nonlinear optical absorption behavior of pristine and Co-doped V2O5 layered 2D nanostructures

Cited by 12 publications

References 42 publications

2D Nickel Sulfide Electrodes with Superior Electrochemical Thermal Stability along with Long Cyclic Stability for Supercapatteries

2D Nickel Sulfide Electrodes with Superior Electrochemical Thermal Stability along with Long Cyclic Stability for Supercapatteries

Nickel Disulfide (NiS₂): A Sustainable Low‐Cost Electrode Material for High‐Performance Supercapacitors

Functionalized Carbon Nanostructures for Hydrogen Storage

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The role of defects in the nonlinear optical absorption behavior of pristine and Co-doped V2O5 layered 2D nanostructures

Cited by 12 publications

References 42 publications

2D Nickel Sulfide Electrodes with Superior Electrochemical Thermal Stability along with Long Cyclic Stability for Supercapatteries

2D Nickel Sulfide Electrodes with Superior Electrochemical Thermal Stability along with Long Cyclic Stability for Supercapatteries

Nickel Disulfide (NiS2): A Sustainable Low‐Cost Electrode Material for High‐Performance Supercapacitors

Functionalized Carbon Nanostructures for Hydrogen Storage

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Product

Resources

About

Nickel Disulfide (NiS₂): A Sustainable Low‐Cost Electrode Material for High‐Performance Supercapacitors