Electrocatalytic Performance of MnMoO4-rGO Nano-Electrocatalyst for Methanol and Ethanol Oxidation

Salarizadeh, Parisa; Azizi, Sadegh; Beydaghi, Hossein; Bagheri, Ahmad Reza; Askari, Mohammad Bagher

doi:10.3390/molecules28124613

Cited by 6 publications

(1 citation statement)

References 50 publications

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“…Having renewable resources is a reason for developing clean energy; moreover, the design and construction of modern energy production and storage equipment that utilizes these clean fuel sources are considered one of the most important and practical sciences around the world 4 . Various types of solar cells, geothermal facilities, and wind turbines are some examples of energy conversion equipment 5 . With the development of nanoscience, materials, and electrochemistry, recently, ultramodern and alluring equipment such as fuel cells, batteries, and electrochemical supercapacitors have received much attention.…”

Section: Introductionmentioning

confidence: 99%

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

Askari,

Salarizadeh,

Ramezan zadeh

2024

Sci Rep

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The potential of metal oxides in electrochemical energy storage encouraged our research team to synthesize molybdenum oxide/tungsten oxide nanocomposites (MoO3/WO3) and their hybrid with reduced graphene oxide (rGO), in the form of MoO3/WO3/rGO as a substrate with relatively good electrical conductivity and suitable electrochemical active surface. In this context, we presented the electrochemical behavior of these nanocomposites as an electrode for supercapacitors and as a catalyst in the oxidation process of methanol/ethanol. Our engineered samples were characterized by X-ray diffraction pattern and scanning electron microscopy. As a result, MoO3/WO3 and MoO3/WO3/rGO indicated specific capacitances of 452 and 583 F/g and stability of 88.9% and 92.6% after 2000 consecutive GCD cycles, respectively. Also, MoO3/WO3 and MoO3/WO3/rGO nanocatalysts showed oxidation current densities of 117 and 170 mA/cm2 at scan rate of 50 mV/s, and stability of 71 and 89%, respectively in chronoamperometry analysis, in the MOR process. Interestingly, in the ethanol oxidation process, corresponding oxidation current densities of 42 and 106 mA/cm2 and stability values of 70 and 82% were achieved. MoO3/WO3 and MoO3/WO3/rGO can be attractive options paving the way for prospective alcohol-based fuel cells.

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Section: Introductionmentioning

confidence: 99%

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

Askari,

Salarizadeh,

Ramezan zadeh

2024

Sci Rep

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Coexistence of Redox‐Active Metal and Ligand Sites in Copper‐Based Two‐Dimensional Conjugated Metal–Organic Frameworks as Active Materials for Battery‐Supercapacitor Hybrid Systems

Bagheri,

Bellani,

Beydaghi

et al. 2024

ChemSusChem

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Two‐dimensional (2D) conjugated metal‐organic frameworks (c‐MOFs) are promising materials for supercapacitor (SC) electrodes due to their high electrochemically accessible surface area coupled with superior electrical conductivity compared to traditional MOFs. Here, porous and non‐porous HHB‐Cu (HHB=hexahydroxybenzene), derived through surfactant‐assisted synthesis, are studied as representative 2D c‐MOF models, showing different reversible redox reactions with Na+ and Li+ in aqueous and organic electrolytes, respectively. We deployed these redox activities to design negative electrodes for hybrid SCs (HSCs), combining the battery‐like property of HHB‐Cu as negative electrode and the high capacitance and robust cyclic stability of activated carbon (AC) as positive electrode. In organic electrolyte, porous HHB‐Cu‐based HSC achieves a maximum cell specific capacity (Cs) of 22.1 mAhg‐1 at 0.1 Ag‐1, specific energy (Es) of 15.55 Whkg‐1 at specific power (Ps) of 70.49 Wkg‐1, and 77% cyclic stability after 3000 gravimetric charge‐discharge (GCD) cycles at 1 Ag‐1 (calculated on the mass of both electrode materials). In the aqueous electrolyte, porous HHB‐Cu‐based HSC displays a Cs of 13.9 mAhg‐1 at 0.1 Ag‐1, Es of 6.13 Whkg‐1 at 44.05 Wkg‐1, and 72.3% Cs retention after 3000 GCD cycles. The non‐porous sample shows lower Es performance but better rate capability compared to the porous one.

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G-C3N4 tubes decorated with MnMoO4·H2O: Outstanding S-scheme photocatalyst for detoxification of water pollutants upon visible light

Lahootifar,

Habibi-Yangjeh,

Salmanzadeh-Jamadi

et al. 2024

FlatChem

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Electrocatalytic Performance of MnMoO4-rGO Nano-Electrocatalyst for Methanol and Ethanol Oxidation

Cited by 6 publications

References 50 publications

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

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

Coexistence of Redox‐Active Metal and Ligand Sites in Copper‐Based Two‐Dimensional Conjugated Metal–Organic Frameworks as Active Materials for Battery‐Supercapacitor Hybrid Systems

G-C3N4 tubes decorated with MnMoO4·H2O: Outstanding S-scheme photocatalyst for detoxification of water pollutants upon visible light

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