Graphene incorporated mesoporous perovskite with excellent conductivity and catalytic activity for low temperature solid oxide fuel cells

Memon, Saeed Ahmed; Shaikh, Huma; Memon, Ayaz Ali; Raza, Rizwan; Memon, Shahabuddin; Mughal, Zaib un Nisa

doi:10.1039/d2nj01917e

New J. Chem.

2022

DOI: 10.1039/d2nj01917e

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Graphene incorporated mesoporous perovskite with excellent conductivity and catalytic activity for low temperature solid oxide fuel cells

Saeed Ahmed Memon

Huma Shaikh

Ayaz Ali Memon

et al.

Abstract: The superior efficacy and eco-friendly energy transformation sources in the modern time have gained remarkable attraction in terms of fuel cell technology. In this regard, graphene incorpotated nanocomposites show strong...

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Cited by 2 publications

References 59 publications

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Recent developments in applications of G-CuO nanocomposites for photocatalytic dye removal

Mehmood,

Sandhu,

Iqbal

et al. 2024

Phys. Scr.

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The extensive application of synthetic dyes across industries poses significant environmental challenges, particularly concerning water quality degradation. Regarding the possible solutions, copper oxide (CuO) stands out as a feasible candidate. Being a p-type Nano-heterogeneous semiconductor with a bandgap of 1.2–2.71 eV, CuO is a reasonable choice and widely studied photocatalyst for addressing such challenges. When the wavelength exceeded the UV-visible region, its functionality showed deterioration. At the same time, there are difficulties associated with reproducibility and reusability, as well as rapid electron-hole recombination, which prevent the widespread application of this technology within this spectral range. In an attempt to eliminate this defect, researchers have been investigating strategies to activate CuO under visible light, with one promising approach being carbon nanomaterials such as graphene to form carbon-CuO composites. The unique properties of graphene, i.e., its large surface area and excellent electron mobility, make it a remarkable candidate for the enhancement of CuO photoactivity. This study highlighted the recent progress in the synthesis of graphene-based CuO photocatalysts, with the main characteristic of extending the light absorption capacity of CuO into the visible spectrum. It reveals achievements in material innovations and applications, with a focus on photocatalytic dye degradation. These breakthroughs are a sign that the field is growing in popularity and is evolving.

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Recent developments in applications of G-CuO nanocomposites for photocatalytic dye removal

Mehmood,

Sandhu,

Iqbal

et al. 2024

Phys. Scr.

View full text Add to dashboard Cite

show abstract

Synergistic Electrochemical Properties of Graphene Incorporated LCZ-Oxide Cathode for Low Temperature Solid Oxide Fuel Cell

Ahmad

et al. 2023

Crystals

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Mixed metallic oxides are getting increasing attention as novel electrode materials for energy conversion devices. However, low mixed ionic-electronic conductivity and high operating temperature hamper the practical applications of these devices. This study reports an effective strategy to improve the conductivity and performance of the fuel cell at low temperature by partially incorporating graphene in the Li0.1Cu0.2Zn0.7-oxide (LCZ) composite. The proposed cathode material is synthesized via the cost effective conventional solid-state route. Graphene incorporated LCZ shows excellent performance, which is attributed to the favorable charge transport paths offering low area-specific resistance. An X-ray diffractometer (XRD) and scanning electron microscope (SEM) are employed for microstructural and surface morphological analyses, respectively. Electrical conductivities of all the materials are determined by the DC four probe method, and interestingly, LCZ-1.5% graphene exhibits an excellent conductivity of 3.5 S/cm in air atmosphere at a temperature of 450 °C with a minimum value of 0.057 Ωcm2 area-specific resistance (ASR) that demonstrates significantly good performance. Moreover, the three-layer fuel cell device is fabricated using sodium carbonated Sm0.2Ce0.8O (NSDC) as an electrolyte, which can operate at low temperatures exhibiting open circuit voltage 0.95 V and shows a peak power density, i.e., 267.5 mW/cm2 with hydrogen as the fuel.

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Graphene incorporated mesoporous perovskite with excellent conductivity and catalytic activity for low temperature solid oxide fuel cells

Abstract: The superior efficacy and eco-friendly energy transformation sources in the modern time have gained remarkable attraction in terms of fuel cell technology. In this regard, graphene incorpotated nanocomposites show strong...

Cited by 2 publications

References 59 publications

Recent developments in applications of G-CuO nanocomposites for photocatalytic dye removal

Recent developments in applications of G-CuO nanocomposites for photocatalytic dye removal

Synergistic Electrochemical Properties of Graphene Incorporated LCZ-Oxide Cathode for Low Temperature Solid Oxide Fuel Cell

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