Electrochemical energy storage by nanosized MoO3/PdO material: Investigation of its structural, optical and electrochemical properties for supercapacitor

Shaheen, Irum; Ahmad, Khuram Shahzad; Zequine, Camila; Gupta, Ram K.; Thomas, Andrew G.; Malik, Mohammad Azad

doi:10.1016/j.est.2021.102447

Cited by 13 publications

(27 citation statements)

References 46 publications

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“…E. cognata has been used in previous studies to synthesize other metal oxides such as MoO 3 , ZnO, etc. [ 25 ] E. cognata leaves have proved themselves to be a competent phyto‐fuel for the biogenic synthesis and specific functionalization of nanoparticles. Hence, it can be efficiently employed for the production of other metal oxides as well.…”

Section: Resultsmentioning

confidence: 99%

“…The electrochemical workstation consisting of a three‐electrode system was employed with ternary nanocomposites modified Ni foam being the working electrode with saturated calomel electrode, and platinum wire electrode. [ 25 ] The electrochemical testing was accomplished in KOH (i.e., 3 m ) for scanning by CV at varying sweeping speeds covering over a range of 2 till 300 mV s −1 , the galvanostatic charge–discharge (GCD) was changed by fluctuating current densities from 0.5 to 30 A g −1 . The total EIS of the sample was achieved within a frequency of 50 mHz−10 kHz.…”

Section: Methodsmentioning

confidence: 99%

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Efficient Synthesis and Electrochemical Investigation of Co₃O₄:PdO/Pd Nanocomposite for High‐Performance Supercapacitor Electrode Material

Shaheen

Ahmad

Zequine

et al. 2023

Physica Status Solidi (a)

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Presently, energy-related research topics, including storage and conversion, have garnered significant global attention. The urgent need to address climate change and environmental challenges, such as pollution resulting from the combustion of fossil fuels in vehicles leading to CO 2 emissions, has prompted researchers to intensify their efforts in the area of energy storage and efficiency. [1,2] Nanotechnology has made significant steps in recent years, particularly in the field of nanocomposites that offer the combined benefits of multiple materials. These nanocomposites have garnered substantial attention as potential solutions to global energy challenges due to their unique properties and versatile applications. [3] The sustainable future of energy demands clean and renewable energies as well as innovative devices for energy storage like batteries (lithium ion-LiBs) and supercapacitors (SCs). [4,5] In comparison with LiBs, SCs, microsupercapacitors (μSCs), and batteries have emerged as promising energy storage devices owing to their exceptionally high charge/discharge rates, impressive power and energy densities, environmentally friendly characteristics, and long-term cycling stability. These attributes have

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Section: Resultsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Efficient Synthesis and Electrochemical Investigation of Co₃O₄:PdO/Pd Nanocomposite for High‐Performance Supercapacitor Electrode Material

Shaheen

Ahmad

Zequine

et al. 2023

Physica Status Solidi (a)

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“…Figure S5d shows that the spectral peaks associated with -OH, N–H, and others disappeared (505, 791, 1064, 1410, 1927, and 3210 cm –1 ), while new peaks appeared at 3438, 1628, 983, 865, 655, and 474 cm –1 after 100 min of SSR at 500 °C. The peaks at 3438/1628, 983/865, 655, and 474 cm –1 are attributable to metal orthophosphate stretching vibrations, MoO/Mo–O–Mo, P–O, and metal-M-O (Pd and Ni) bonds, respectively. ,− No absorption peaks of ammonium compounds were detected after calcination (Figure S5d), suggesting that they were evaporated and that the Pd 6% Ni-P 2 O 5 /MoO 3 HPHS was produced.…”

Section: Resultsmentioning

confidence: 99%

Oxygen Vacancies Induced by Pd Doping in Ni-P₂O₅/MoO₃ Hollow Polyhedral Heterostructures for Highly Efficient Diethylamine Gas Sensing

et al. 2022

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Semiconductor metal-oxide materials have a high surface-to-volume ratio and many active sites, making them potentially useful for gas sensing. Dopants introduced into the lattice can improve the catalytic activity of oxides and promote the formation of oxygen vacancies, hence improving the sensing performance of the materials. However, the simple preparation of materials with high sensitivity, selectivity, and a low detection limit remains a challenge. Herein, we report on the synthesis of Ni-P2O5/MoO3 and Pd-doped Ni-P2O5/MoO3 hollow polyhedral heterostructures (HPHSs) and their application in diethylamine (DEA) sensing for the first time. The Pd-doped Ni-P2O5/MoO3 HPHS was synthesized by doping different proportions of palladium-containing precursors using hydrothermal and solid-state reaction techniques. The concentration of oxygen vacancies in the HPHS composite increased by increasing Pd doping from 2 to 6 weight percent (wt %) but later reduced, according to X-ray photoelectron spectroscopy (XPS) measurements. Pd6%Ni-P2O5/MoO3 has the highest sensitivity to DEA (R a/R g = 42.5) and is 5.0 times and 42.5 times more sensitive than the pure Ni-P2O5/MoO3 HPHS (R a/R g = 8.5) and commercial ammonium phosphomolybdate (R a/R g = 1) at 175 °C toward 10 ppm DEA. Moreover, the DEA sensor exhibits a low detection limit (R a/R g = 3.5@1 ppm) with a wide dynamic response (R a/R g = 145.5@50 ppm). The remarkable improvement in DEA sensitivity is attributed to the hollow polyhedral structure, heterostructures, and oxygen vacancies formed by Pd doping. This study confirms that developing Pd-doped Ni-P2O5/MoO3 HPHSs provides an innovative approach for DEA sensors.

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“…Silver NPdecorated MoO 3 prepared via a facile hydrothermal method exhibited a C s of 225 F/g [66]. An MoO 3 /PdO composite prepared by the sol-gel method using foliar fuel of Euphorbia cognata exhibited a capacitance of 127 F/g [67]. MoO 3 NPs modified with titanium dioxide NPs using the hydrothermal method attained a C s of 141 F/g [68].…”

Section: Electrochemical Propertiesmentioning

confidence: 99%

Biogenic Synthesis of High-Performance α-MoO3 Nanoparticles from Tryptophan Derivatives for Antimicrobial Agents and Electrode Materials of Supercapacitors

Prakash

Siddarapu

Nimmagadda

et al. 2023

International Journal of Energy Research

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Molybdenum trioxide nanoparticles (MoO3 NPs) are recognized for their applications in novel multifunctional devices. Here, a biogenic, environmentally friendly method using Lepidagathis cristata leaf extract was employed to synthesize MoO3 NPs. The as-obtained MoO3 NPs exhibited a predominant (0 k0) orientation, representing an α-MoO3 structure. The absorption band at 984 cm-1 observed in the Fourier-transform infrared spectrum corresponded to the terminal Mo = O bond, thereby confirming that the prepared MoO3 NPs were in the orthorhombic phase. Scanning and transmission electron microscopy data revealed that the MoO3 NPs were well crystallized and uniformly distributed with grain sizes in the 70-100 nm range. The biogenic MoO3 NPs demonstrated an excellent zone of inhibition against the selected Gram -ve and Gram +ve bacterial strains, thus providing an alternative to standard antibacterial agents. During electrochemical experiments conducted in a 1 M aqueous Na2SO4 solution, cyclic voltammetry (CV) curves of the MoO3 NPs showed a pseudocapacitive nature, with a high discharge specific capacitance of 294 F/g and good cyclability. These results suggest the feasibility of the proposed biogenic, environmentally friendly method for preparing MoO3 NPs for application in multifunctional devices.

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Electrochemical energy storage by nanosized MoO3/PdO material: Investigation of its structural, optical and electrochemical properties for supercapacitor

Cited by 13 publications

References 46 publications

Efficient Synthesis and Electrochemical Investigation of Co₃O₄:PdO/Pd Nanocomposite for High‐Performance Supercapacitor Electrode Material

Efficient Synthesis and Electrochemical Investigation of Co₃O₄:PdO/Pd Nanocomposite for High‐Performance Supercapacitor Electrode Material

Oxygen Vacancies Induced by Pd Doping in Ni-P₂O₅/MoO₃ Hollow Polyhedral Heterostructures for Highly Efficient Diethylamine Gas Sensing

Biogenic Synthesis of High-Performance α-MoO3 Nanoparticles from Tryptophan Derivatives for Antimicrobial Agents and Electrode Materials of Supercapacitors

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Electrochemical energy storage by nanosized MoO3/PdO material: Investigation of its structural, optical and electrochemical properties for supercapacitor

Cited by 13 publications

References 46 publications

Efficient Synthesis and Electrochemical Investigation of Co3O4:PdO/Pd Nanocomposite for High‐Performance Supercapacitor Electrode Material

Efficient Synthesis and Electrochemical Investigation of Co3O4:PdO/Pd Nanocomposite for High‐Performance Supercapacitor Electrode Material

Oxygen Vacancies Induced by Pd Doping in Ni-P2O5/MoO3 Hollow Polyhedral Heterostructures for Highly Efficient Diethylamine Gas Sensing

Biogenic Synthesis of High-Performance α-MoO3 Nanoparticles from Tryptophan Derivatives for Antimicrobial Agents and Electrode Materials of Supercapacitors

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Efficient Synthesis and Electrochemical Investigation of Co₃O₄:PdO/Pd Nanocomposite for High‐Performance Supercapacitor Electrode Material

Efficient Synthesis and Electrochemical Investigation of Co₃O₄:PdO/Pd Nanocomposite for High‐Performance Supercapacitor Electrode Material

Oxygen Vacancies Induced by Pd Doping in Ni-P₂O₅/MoO₃ Hollow Polyhedral Heterostructures for Highly Efficient Diethylamine Gas Sensing