Nanomaterials for Fuel Cell Technology

Dhathathreyan, K. S.; Rajalakshmi, N.; Balaji, R.

doi:10.1002/9783527696109.ch24

Cited by 13 publications

(7 citation statements)

References 147 publications

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“…According to previous reports, the properties of materials not only rely on the physical properties which can be observed at the macroscopic level but also depend on the complex interaction at the micro-scale or nano-scale [ 29 , 30 ], i.e., the redox reaction and nano-effect. It has been found that the structure of materials significantly impacts the performances of SOFCs [ 31 , 32 ]. With the rapid development of nanotechnology nowadays, techniques such as atomic layer deposition (ALD), pulsed laser deposition (PLD), sol-gel, flame spray deposition, spark plasma sintering, etc, have been applied in the fabrication of nanomaterials for SOFC applications.…”

Section: Fundamental Concepts Of Macro Micro Nano-structured Sofcs and The Trend From Macro To Nano-structured Levelmentioning

confidence: 99%

Recent Progress in Semiconductor-Ionic Conductor Nanomaterial as a Membrane for Low-Temperature Solid Oxide Fuel Cells

et al. 2021

Nanomaterials

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Reducing the operating temperature of Solid Oxide Fuel Cells (SOFCs) to 300–600 °C is a great challenge for the development of SOFC. Among the extensive research and development (R&D) efforts that have been done on lowering the operating temperature of SOFCs, nanomaterials have played a critical role in improving ion transportation in electrolytes and facilitating electrochemical catalyzation of the electrodes. This work reviews recent progress in lowering the temperature of SOFCs by using semiconductor-ionic conductor nanomaterial, which is typically a composition of semiconductor and ionic conductor, as a membrane. The historical development, as well as the working mechanism of semiconductor-ionic membrane fuel cell (SIMFC), is discussed. Besides, the development in the application of nanostructured pure ionic conductors, semiconductors, and nanocomposites of semiconductors and ionic conductors as the membrane is highlighted. The method of using nano-structured semiconductor-ionic conductors as a membrane has been proved to successfully exhibit a significant enhancement in the ionic conductivity and power density of SOFCs at low temperatures and provides a new way to develop low-temperature SOFCs.

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Section: Fundamental Concepts Of Macro Micro Nano-structured Sofcs and The Trend From Macro To Nano-structured Levelmentioning

confidence: 99%

Recent Progress in Semiconductor-Ionic Conductor Nanomaterial as a Membrane for Low-Temperature Solid Oxide Fuel Cells

et al. 2021

Nanomaterials

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“…Moreover, the Brunauer-Emmett-Teller surface area was found to be ~12.8 m 2 g 1 (average pore diameter = 24.48 nm), almost 200% of the average surface area of commercial LSCF6428 powder. Nanopowders typically show higher electrocatalytic activity compared with bulk powders owing to their larger surface area and better gas-diffusion pathways; [30][31][32] therefore, the synthesized LSCF6428 cathode is expected to enhance the ORR and improve fuel cell performance. The elemental distribution in the synthesized LSCF was evaluated by EDX spectroscopy.…”

Section: Physical Propertiesmentioning

confidence: 99%

“…Similar to various electrochemical applications, nanostructured electrode materials with small grain size and larger surface area are expected to achieve higher electrocatalytic performance in fuel cells. [30][31][32] Considering this, efforts were made to synthesize nanostructured LSCF by different methods to be utilized as air electrodes for SOFCs. Garcia et al 20) synthesized LSCF powders using a hydrothermal method and obtained a phase-pure product after calcination at 900 o C. Fakhrabadi et al 22) demonstrated a low-frequency ultrasound-assisted technique for the synthesis of LSCF, but could not obtain a phase-pure product even after calcination up to 1000 o C. Kim et al 24) demonstrated a complex method to synthesize nanocrystalline LSCF using inorganic nanodispersants.…”

Section: Introductionmentioning

confidence: 99%

A Facile Combustion Synthesis Route for Performance Enhancement of La0.6Sr0.4Co0.2Fe0.8O3-δ (LSCF6428) as a Robust Cathode Material for IT-SOFC

Yoo¹,

Namgung²,

Bhardwaj³

et al. 2019

J. Korean Ceram. Soc

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Lanthanum-based transition metal cations containing perovskites have emerged as potential catalysts for the intermediatetemperature (600-800 o C) oxygen reduction reaction (ORR). Here, we report a facile acetylacetone-assisted combustion route for the synthesis of nanostructured La 0.6 Sr 0.4 Co 0.2 Fe 0.8 O 3-δ (LSCF6428) cathodes for intermediate-temperature solid-oxide fuel cells (IT-SOFCs). The as-prepared powder was analyzed by thermogravimetry analysis-differential scanning calorimetry. The powder calcined at 800 o C was characterized by X-ray diffraction, scanning electrode microscopy, energy dispersive X-ray spectroscopy, and Brunauer-Emmett-Teller surface area measurements. It was found that the porosity of the air electrode significantly increased by utilizing the nanostructured LSCF6428 instead of commercial powder. The performance of a single cell fabricated with the nanostructured LSCF6428 cathode increased by 112%, from 0.4 to 0.85 W cm 2 , at 700 o C. Electrochemical impedance spectroscopy showed a considerable reduction in the area-specific resistance and activation energy from 133.5 to 61.5 kJ/mol, resulting in enhanced electrocatalytic activity toward ORR and overall cell performance.

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“…In the last few decades, nanoparticles have emerged as one of the versatile tools for catalysis [ 11 ], biosensors [ 12 ], cell labelling [ 13 ], medicines [ 14 ], solar cells [ 15 ], fuel cells [ 16 ], photonic band gap materials [ 17 ], and in many more applications.…”

Section: Introductionmentioning

confidence: 99%

Green Synthesis, Characterization and Application of Natural Product Coated Magnetite Nanoparticles for Wastewater Treatment

et al. 2020

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Adsorption of organic pollutants, toxic metal ions, and removal of harmful bacteria can give us clean and pure drinkable water from wastewater resources. Respective magnetite nanoparticles (MNPs) were synthesized using a cheaper and greener way in an open-air environment with the use of crude latex of Jatropha curcas (JC) and leaf extract of Cinnamomum tamala (CT). Characterization of MNPs had been performed by dynamic light scattering (DLS), Ultraviolet-visible (UV-vis) spectroscopy, Fourier-transform infrared (FTIR) spectroscopy, powdered X-ray diffraction (XRD), and field emission scanning electron microscope (FE-SEM). The size ranges of the synthesized MNPs were observed in between 20–42 nm for JC-Fe3O4 and within 26–35 nm for CT-Fe3O4 by FE-SEM images. The effect of synthesized magnetic nanoparticles in wastewater treatment (bacterial portion), dye adsorption, toxic metal removal as well as antibacterial, antioxidant, and cytotoxic activities were studied. This purification will lead to an increase in the resources of pure drinking water in the future.

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Nanomaterials for Fuel Cell Technology

Cited by 13 publications

References 147 publications

Recent Progress in Semiconductor-Ionic Conductor Nanomaterial as a Membrane for Low-Temperature Solid Oxide Fuel Cells

Recent Progress in Semiconductor-Ionic Conductor Nanomaterial as a Membrane for Low-Temperature Solid Oxide Fuel Cells

A Facile Combustion Synthesis Route for Performance Enhancement of La0.6Sr0.4Co0.2Fe0.8O3-δ (LSCF6428) as a Robust Cathode Material for IT-SOFC

Green Synthesis, Characterization and Application of Natural Product Coated Magnetite Nanoparticles for Wastewater Treatment

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