Electrochimica Acta, Год журнала: 2025, Номер unknown, С. 146351 - 146351
Опубликована: Апрель 1, 2025
Язык: Английский
Coordination Chemistry Reviews, Год журнала: 2024, Номер 518, С. 216048 - 216048
Опубликована: Июль 4, 2024
Язык: Английский
Процитировано
51
Scientific Reports, Год журнала: 2024, Номер 14(1)
Опубликована: Март 28, 2024
Abstract This investigation reported a one-step green synthesis of nickel oxide nanoparticles (NiO NPs) using aloe vera leaves extract solution for their application in supercapacitor. method used as reducing agent, which is very simple and cost-effective. The synthesized NPs were thoroughly characterized various techniques. X-ray diffraction analysis unequivocally confirmed the crystalline nature; field emission scanning electron microscopy transmission images showed different shapes forms an agglomerated cluster NPs. absorption spectra recorded from UV visible spectroscopy, while Fourier transform infrared spectroscopy provided insights into functional groups present. Electrochemical assessments carried out via cyclic voltammetry, galvanostatic charging-discharging electrochemical impedance spectroscopy. These experiments performed 2 M KOH electrolyte within 1.0 V potential window. Impressively, single electrode displayed remarkable specific capacitance 462 F g −1 at scan rate 1 mV s 336 current density 0.76 A . Further, symmetric two-electrode device (NiO||NiO) has been successfully fabricated by employing separator between electrodes. exhibited exceptional approximately 239 , along with energy 47.8 Wh kg power 545 W 1.2 also shows retention capacity 89% 10 after 2000 cycles 114% columbic efficiency. present study underscores effectiveness approach producing NiO establishes highly promising candidates supercapacitor applications, showcasing both excellent performance three-electrode system stability practical device. results collectively highlight efficacy NPs, establishing its candidate application.
Язык: Английский
Процитировано
35
Nanoscale, Год журнала: 2024, Номер 16(5), С. 2097 - 2120
Опубликована: Янв. 1, 2024
Two-dimensional (2D) transition metal dichalcogenides (TMDs) have emerged as a highly promising platform for the development of photodetectors (PDs) owing to their remarkable electronic and optoelectronic properties.
Язык: Английский
Процитировано
31
Journal of Energy Storage, Год журнала: 2024, Номер 84, С. 110923 - 110923
Опубликована: Фев. 13, 2024
Язык: Английский
Процитировано
27
Electrochimica Acta, Год журнала: 2024, Номер 486, С. 143970 - 143970
Опубликована: Фев. 16, 2024
Язык: Английский
Процитировано
26
Journal of Energy Storage, Год журнала: 2024, Номер 89, С. 111476 - 111476
Опубликована: Апрель 24, 2024
Metal-organic frameworks (MOFs) have been identified as promising electrode materials that increase energy densities in supercapacitors. Importantly, a greater level of understanding charge storage mechanisms and transport behavior within these will facilitate improved design strategies. Here, we present results from the synthesis characterization cobalt-based layered metal−organic framework (Co-LMOF) {[Co(Hmt)2(tfbdc)(H2O)2]·(H2tfbdc)·(EtOH)2}n (H2tfbdc = 2,3,5,6-tetrafluoroterephthalic acid; Hmt hexamethylenetetramine). Electrochemical measurements were performed with Co-LMOF/Carbon Black/PTFE electrodes demonstrated this material indeed shows notable performance potential supercapacitor despite electrically insulating determined experimentally density states calculations. Nickel foam carbon-based current collectors used to distinguish Co-LMOF redox double layer collector contributions. We also cross-correlated findings solid state NMR, quasi-elastic neutron scattering, theoretical modeling gain new insights into dynamics water ethanol material. This information was coupled tools nitrogen gas sorption, X-ray diffraction, thermal gravimetric analysis, photoelectron spectroscopy, scanning electron microscopy. Finally, degradation evaluated for 10 k galvanostatic charge-discharge cycles FTIR, Raman dispersion spectroscopy.
Язык: Английский
Процитировано
20
Physica Scripta, Год журнала: 2024, Номер 99(10), С. 105958 - 105958
Опубликована: Авг. 28, 2024
Abstract Electrochemical technologies like supercapacitors and water-splitting electrolysis are gaining traction due to their impressive efficiency in both energy storage generation. A hydrothermal technique was employed synthesize a metal–organic framework (MOF) containing zinc nickel. Glycolic acid (GA), naturally occurring biodegradable ligand, utilized explore its potential for incorporation into the MOF heterostructure. The ZnNi-MOF (GA) composites showed notable specific capacity of 1648 C g −1 (2060 F/g) under current density 1.0 at 70 °C. study investigated supercapacitor system design where combination polyaniline-doped activated carbon used negative electrode zinc-nickel positive electrode. synthesized (GA)//AC device demonstrated 110 (55 F ) higher 2.0 . recyclability stability (ZnNi-MOF (GA)//AC) were evaluated using 10000 charge–discharge cycles, yielding an 86% retention. composite displayed outstanding catalytic ability hydrogen evolution reaction (HER) comparison other tested materials, achieving lowest Tafel slope 42.79 mV/dec. findings our research suggest that exhibits desirable characteristics make it promising material electrodes applications supercapattery HER.
Язык: Английский
Процитировано
13
Journal of Energy Storage, Год журнала: 2024, Номер 81, С. 110432 - 110432
Опубликована: Янв. 20, 2024
Язык: Английский
Процитировано
12
Journal of Energy Storage, Год журнала: 2024, Номер 99, С. 113383 - 113383
Опубликована: Авг. 18, 2024
Язык: Английский
Процитировано
12
Journal of Energy Storage, Год журнала: 2024, Номер 100, С. 113455 - 113455
Опубликована: Авг. 27, 2024
Язык: Английский
Процитировано
11