Standalone nickel layered double hydroxide and nickel oxide electrodes as effective anodes in alkaline direct methanol fuel cell

Sayed, Enas Taha; Abdelkareem, Mohammad Ali; Wilberforce, Tabbi; Chae, Kyu-Jung; Olabi, Abdul Ghani

doi:10.1016/j.ijhydene.2023.04.066

International Journal of Hydrogen Energy

2024

DOI: 10.1016/j.ijhydene.2023.04.066

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Standalone nickel layered double hydroxide and nickel oxide electrodes as effective anodes in alkaline direct methanol fuel cell

Enas Taha Sayed

Mohammad Ali Abdelkareem

Tabbi Wilberforce

et al.

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2024

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Cited by 10 publications

References 85 publications

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Outstanding Activity and Durability of Supported NiCo₂O₄ Nanoparticles for Direct Ethanol Fuel Cells

Afify,

Hameed,

Mohamed

et al. 2024

Applied Organom Chemis

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The rational design of noble metal‐free electrocatalysts represents one of the basic stones for fuel cell development. With the exploration of eco‐friendly nanomaterials for the investigated alcohol oxidation process, nickel‐based electrodes have been recognized as the most auspicious anodes with promoted activity and stability. In this work, a series of NiCo2O4 nanoparticles were deposited onto graphite sheets (NiCo2O4/T) introducing varied proportions of cobalt oxide species. Co‐precipitation protocol of the respective metallic hydroxides onto the carbonaceous support was followed with consecutive annealing in an air atmosphere at 400°C. The fabricated mixed metallic oxide nanopowder was physically studied using X‐ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), energy dispersive X‐ray analysis (EDX), X‐ray photoelectron spectroscopy (XPS), and selected area electron diffraction (SAED). Uniformly arranged nanoparticles were observed on graphite surface as evidenced by SEM and TEM. The cubic lattice structure of formed NiCo2O4 crystals was also confirmed by XRD through the defined peaks of binary metallic oxides clarifying their successful preparation scheme. The electrocatalytic properties of these NiCo2O4/T nanocatalysts were evaluated for oxidizing ethanol molecules in basic solution. Pronounced oxidation current densities were remarkably measured at NiCo2O4/T electrodes in relation to that at NiO/T. Differing the introduced cobalt oxide content into the synthesized nanocatalyst significantly controlled its catalytic performance. NiCo2O4/T‐20 exhibited the highest activity and stability among the prepared nanomaterials. Much decreased charge transfer resistances were also recorded at this electrode demonstrating its promoted electron transfer characteristics. This work could provide a reasonable route for the simple synthesis of comparable transition metallic oxides with promising attitudes for energy generation purposes.

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Outstanding Activity and Durability of Supported NiCo₂O₄ Nanoparticles for Direct Ethanol Fuel Cells

Afify,

Hameed,

Mohamed

et al. 2024

Applied Organom Chemis

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Metal Organic Frameworks‐Derived NiO/NiCo₂O₄ Heterostructures for Effective Methanol Oxidation Reaction

Xin,

Ma,

Zhang

et al. 2024

ChemCatChem

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The electrochemical process of methanol oxidation reaction (MOR), which is closely associated with electrochemical production of formate and hydrogen, is considered a highly viable avenue for advancing renewable energy technologies. Nevertheless, the development and creation of affordable, effective, and durable electrocatalysts for MOR continue to present significant obstacles. In this study, a hierarchical porous NiO/NiCo2O4/NF electrode is fabricated through the integration of solvothermal and thermal oxidation treatments of Ni‐MOF‐74 and NiCo‐Asp. After thoroughly assessing the electrochemical performance for MOR, NiO/NiCo2O4/NF demonstrates a significant current density of 140 mA·cm‐2 at 1.6 V (vs. RHE) and a Tafel slop of 45.0 mV·dec‐1 in 1 M KOH and 0.5 M methanol. The excellent performance of MOR can be ascribed to the hierarchical porous nature that enhances mass and electron transport while offering numerous active sites for electrocatalytic reactions. Additionally, the heterointerface between NiO and NiCo2O4 could further enhance electron transfer rate and reaction kinetics for the MOR. The developed NiO/NiCo2O4/NF electrode shows potential as a viable and economical alternative to Pt‐based electrocatalysts for MOR‐based applications.

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Catalysis for Carbon‐Circularity: Emerging Concepts and Role of Inorganic Chemistry

Centi,

Liu,

Perathoner

2024

ChemSusChem

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Carbon circularity is crucial for achieving a circular economy but has wider implications and impacts with respect to the circularity of materials. It has an in‐depth transformative effect on the economy. CO2 recycling is a critical component for this objective, with catalysis and inorganic chemistry playing a determining role in achieving this challenge. This concept paper presents some examples, as food for thought, of unconventional aspects in developing thermal and electro/photocatalysts for recycling CO2. The aspects discussed regard designing novel materials for CO2 thermo‐ or electro‐conversion and developing novel nanostructured electrodes.

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Standalone nickel layered double hydroxide and nickel oxide electrodes as effective anodes in alkaline direct methanol fuel cell

Cited by 10 publications

References 85 publications

Outstanding Activity and Durability of Supported NiCo₂O₄ Nanoparticles for Direct Ethanol Fuel Cells

Outstanding Activity and Durability of Supported NiCo₂O₄ Nanoparticles for Direct Ethanol Fuel Cells

Metal Organic Frameworks‐Derived NiO/NiCo₂O₄ Heterostructures for Effective Methanol Oxidation Reaction

Catalysis for Carbon‐Circularity: Emerging Concepts and Role of Inorganic Chemistry

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Standalone nickel layered double hydroxide and nickel oxide electrodes as effective anodes in alkaline direct methanol fuel cell

Cited by 10 publications

References 85 publications

Outstanding Activity and Durability of Supported NiCo2O4 Nanoparticles for Direct Ethanol Fuel Cells

Outstanding Activity and Durability of Supported NiCo2O4 Nanoparticles for Direct Ethanol Fuel Cells

Metal Organic Frameworks‐Derived NiO/NiCo2O4 Heterostructures for Effective Methanol Oxidation Reaction

Catalysis for Carbon‐Circularity: Emerging Concepts and Role of Inorganic Chemistry

Contact Info

Product

Resources

About

Outstanding Activity and Durability of Supported NiCo₂O₄ Nanoparticles for Direct Ethanol Fuel Cells

Outstanding Activity and Durability of Supported NiCo₂O₄ Nanoparticles for Direct Ethanol Fuel Cells

Metal Organic Frameworks‐Derived NiO/NiCo₂O₄ Heterostructures for Effective Methanol Oxidation Reaction