Insight perspective on the synthesis and morphological role of the noble and non-noble metal-based electrocatalyst in fuel cell application

Applied Catalysis B Environment and Energy, Journal Year: 2023, Volume and Issue: 334, P. 122820 - 122820

Published: April 28, 2023

Language: Английский

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MoO3/WO3/rGO as electrode material for supercapacitor and catalyst for methanol and ethanol electrooxidation

Scientific Reports, Journal Year: 2024, Volume and Issue: 14(1)

Published: April 30, 2024

Abstract The potential of metal oxides in electrochemical energy storage encouraged our research team to synthesize molybdenum oxide/tungsten oxide nanocomposites (MoO 3 /WO ) and their hybrid with reduced graphene (rGO), the form MoO /rGO as a substrate relatively good electrical conductivity suitable active surface. In this context, we presented behavior these an electrode for supercapacitors catalyst oxidation process methanol/ethanol. Our engineered samples were characterized by X-ray diffraction pattern scanning electron microscopy. As result, indicated specific capacitances 452 583 F/g stability 88.9% 92.6% after 2000 consecutive GCD cycles, respectively. Also, nanocatalysts showed current densities 117 170 mA/cm 2 at scan rate 50 mV/s, 71 89%, respectively chronoamperometry analysis, MOR process. Interestingly, ethanol process, corresponding 42 106 values 70 82% achieved. can be attractive options paving way prospective alcohol-based fuel cells.

Language: Английский

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Electrochemical Properties of NiCo2O4/WO3/Activated Carbon Wheat Husk Nano-Electrocatalyst for Methanol and Ethanol Oxidation

Catalysts, Journal Year: 2024, Volume and Issue: 14(5), P. 302 - 302

Published: May 2, 2024

It is common to use efficient catalysts in the anodes and cathodes of methanol ethanol fuel cells, such as platinum ruthenium. However, due their expansivity rarity, finding a suitable alternative important. In this work, multi-component consisting tungsten oxide, nickel cobaltite, activated carbon were synthesized through hydrothermal method. The performance processes oxidation reactions (MOR EOR) investigated. addition obtained from wheat husk, with an excellent active surface acceptable electrical conductivity, matrix catalyst significantly facilitated process alcohols enhanced efficiency catalyst. physical electrochemical characterization NiCo2O4/WO3 hybridized husk-derived (ACWH) indicated its successful synthesis good alcohol process. NiCo2O4/WO3/ACWH current density 63.39 mA/cm2 at peak potential 0.58 V (1.59 vs. RHE), cyclic stability 98.6% reaction (MOR) 27.98 0.67 (1.68 95.7% (EOR) can be interesting option for application cells.

Language: Английский

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Multiple phase α-NiMoO4 and Fe0.2Ni0.8MoO4 nanoparticles: Synthesis, Characterization, and Application in Methanol Electro-Oxidation

Journal of the Indian Chemical Society, Journal Year: 2025, Volume and Issue: unknown, P. 101663 - 101663

Published: March 1, 2025

Language: Английский

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Methanol and Ethanol Electrooxidation on ZrO2/NiO/rGO

Nanomaterials, Journal Year: 2023, Volume and Issue: 13(4), P. 679 - 679

Published: Feb. 9, 2023

Recently, transition metal oxides have been considered for various applications due to their unique properties. We present the synthesis of a three-component catalyst consisting zirconium oxide (ZrO2), nickel (NiO), and reduced graphene (rGO) in form ZrO2/NiO/rGO by simple one-step hydrothermal method. X-ray powder diffraction (XRD), scanning electron microscope (SEM), bright-field transmission microscopy (BF-TEM) analyses were performed accurately characterize catalysts. Cyclic voltammetry (CV), electrochemical impedance spectroscopy (EIS), linear sweep (LSV) also carried out investigate methanol ethanol alcohol electrooxidation ability synthesized nanocatalysts. Inspired good potential field catalysts, especially fuel-cell anodes, we investigated capability this oxidation reaction (MOR) (EOR). After proving successful examining surface morphology these materials, detailed tests show outstanding new nanocatalyst use anode fuel cells. indicated current density 26.6 mA/cm2 at peak 0.52 V 99.5% cyclic stability MOR 17.3 98.5% EOR (at optimal concentration/scan rate 20 mV/s), representing an attractive option alcoholic

Language: Английский

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Ultralight covalent organic frame graphene aerogels modified platinum-magnetite nanostructure for direct methanol fuel cell

Fuel, Journal Year: 2023, Volume and Issue: 357, P. 129771 - 129771

Published: Sept. 13, 2023

Language: Английский

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Electrocatalytic Oxidation of Methanol and Ethanol with 3d-Metal Based Anodic Electrocatalysts in Alkaline Media Using Carbon Based Electrode Assembly

Inorganic Chemistry, Journal Year: 2024, Volume and Issue: 63(6), P. 3005 - 3018

Published: Feb. 1, 2024

Homogeneous electrocatalytic systems based on readily available, earth-abundant, inexpensive base metals Ni, Co, and Cr have been formulated for the electro-oxidation of alcohols (methanol ethanol) that constitute a key half-cell component direct alcohol fuel cells (DAFCs). Notably, excellent results were obtained both methanol as well ethanol while operating with assembly all-non-noble working counter electrode consisting glassy carbon graphite rod, respectively. Using NaOH supporting electrolyte, Ni/Co/Cr metal salts their bis(iminopyridine) complexes used anodic electrocatalysts reactions, among them, catalytic Co outperformed corresponding Ni Cr. The system comprising CoCl2.·6H2O [10 mM] + [6 M] at room temperature emerged best electrocatalyst [5 (ca. 522.5 ± 13.5 mA cm–2 1.4 V) 209 25 1.34 V). It was observed regardless starting alcohol, end product is dioxide, all which gets trapped sodium carbonate (up to 97% yield), thereby mitigating any possible hazards greenhouse gas emission. Inferences from FETEM, FESEM, EDS analysis electrolyte solution residues deposited surface provide evidence mostly homogeneous nature reaction mixture molecular catalyst being major contributor toward activity apart minor role played by trace heterogeneous particles. current cell non-noble electrodes utilizing an salt/complex not only in good densities high-energy power-source DAFCs but also generates high-value offers exciting avenue.

Language: Английский

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New type nanocomposite based on metal-organic frameworks decorated with nickel nanoparticles as a potent electrocatalyst for methanol oxidation in alkaline media

International Journal of Hydrogen Energy, Journal Year: 2024, Volume and Issue: 69, P. 518 - 531

Published: May 8, 2024

Language: Английский

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Active metals decorated NiCo2O4 yolk-shell nanospheres as nanoreactors for catalytic reduction of nitroarenes and azo dyes

Chemosphere, Journal Year: 2024, Volume and Issue: 350, P. 141102 - 141102

Published: Jan. 5, 2024

Language: Английский

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Exploring different non-iron based Co-spinel ferrites as potential electrode materials for supercapacitor applications

Journal of Energy Storage, Journal Year: 2024, Volume and Issue: 92, P. 112129 - 112129

Published: May 29, 2024

Language: Английский

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