Metal Nanocomposites for Energy and Environmental Applications

Hansa,; Sahani, Shalini; Kim, Tae‐Young

doi:10.1007/978-981-16-8599-6_13

Cited by 2 publications

(1 citation statement)

References 102 publications

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“…Pt–SnO 2 /MWCNTs were synthesized using a recipe‐made SnO 2 /MWCNT catalyst support. [ 70 ] The SnO 2 /MWCNT of 80 mg and PtCl 4 of 35 mg were put in two 10 mL of ethylene glycol solutions, and the mixture was then dispersed by sonication for 30 min. After the two solutions were completely dispersed, they were mixed and stirred for 1 h. During stirring, the mixture was titrated with a 0.1 M NaOH solution to pH 10.…”

Section: Methodsmentioning

confidence: 99%

Enhanced Durability and Catalytic Performance of Pt–SnO₂/Multi‐Walled Carbon Nanotube with Shifted d‐Band Center for Proton‐Exchange Membrane Fuel Cells

Min,

Choi,

Kang

et al. 2023

Small Structures

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Worldwide, significant efforts are made to identify energy sources that can help achieve carbon neutrality and promote sustainable development. The development of a catalyst that combines durability and high performance is essential for the commercialization of proton‐exchange membrane fuel cells (PEMFCs). In a fuel cell, carbon corrosion occurs during startup and shutdown due to improper local flooding caused by inadequate water management. In this study, a Pt‐based catalyst is designed with excellent durability and high activity. Introducing a metal oxide layer modified with Pt/multi‐walled carbon nanotubes reduces the direct contact between carbon and the fuel cell environment. This helps prevent carbon corrosion and inhibits the separation, aggregation, and growth of Pt nanoparticles. Moreover, the catalyst exhibits enhanced oxygen reduction activity due to the electronic effect of the metal oxide layer that is coated on it. In this study, by implementing a carbon erosion acceleration protocol, excellent catalytic properties during a load‐cycling experiment consisting of 5,000 cycles are reported. The practical application of the developed catalyst in PEMFCs offers an effective approach to developing Pt‐group metal catalysts with exceptional activity.

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Section: Methodsmentioning

confidence: 99%

Enhanced Durability and Catalytic Performance of Pt–SnO₂/Multi‐Walled Carbon Nanotube with Shifted d‐Band Center for Proton‐Exchange Membrane Fuel Cells

Min,

Choi,

Kang

et al. 2023

Small Structures

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Effect of Metal Carbides on Hydrogen Embrittlement: A Density Functional Theory Study

Faye,

Szpunar

2024

Hydrogen

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This study uses plane wave density functional theory (DFT) to investigate the effect of certain metal carbides (Niobium carbide, Vanadium carbide, Titanium carbide, and Manganese sulfide) on hydrogen embrittlement in pipeline steels. Our results predict that the interaction of hydrogen molecules with these metal carbides occurs in the long range with binding energy varying in the energy window [0.043 eV to 0.70 eV].In addition, our study shows the desorption of H2 molecules from these metal carbides in the chemisorptions. Since atomic state hydrogen interacts with NbC, VC, TiC, and MnS to cause embrittlement, we classified the strength of the hydrogen trapping as TiC + H > VC + H > NbC + H> MnS + H. In addition, our study reveals that the carbon site is a more favorable hydrogen-trapping site than the metal one.

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Metal Nanocomposites for Energy and Environmental Applications

Cited by 2 publications

References 102 publications

Enhanced Durability and Catalytic Performance of Pt–SnO₂/Multi‐Walled Carbon Nanotube with Shifted d‐Band Center for Proton‐Exchange Membrane Fuel Cells

Enhanced Durability and Catalytic Performance of Pt–SnO₂/Multi‐Walled Carbon Nanotube with Shifted d‐Band Center for Proton‐Exchange Membrane Fuel Cells

Effect of Metal Carbides on Hydrogen Embrittlement: A Density Functional Theory Study

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Metal Nanocomposites for Energy and Environmental Applications

Cited by 2 publications

References 102 publications

Enhanced Durability and Catalytic Performance of Pt–SnO2/Multi‐Walled Carbon Nanotube with Shifted d‐Band Center for Proton‐Exchange Membrane Fuel Cells

Enhanced Durability and Catalytic Performance of Pt–SnO2/Multi‐Walled Carbon Nanotube with Shifted d‐Band Center for Proton‐Exchange Membrane Fuel Cells

Effect of Metal Carbides on Hydrogen Embrittlement: A Density Functional Theory Study

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Product

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Enhanced Durability and Catalytic Performance of Pt–SnO₂/Multi‐Walled Carbon Nanotube with Shifted d‐Band Center for Proton‐Exchange Membrane Fuel Cells

Enhanced Durability and Catalytic Performance of Pt–SnO₂/Multi‐Walled Carbon Nanotube with Shifted d‐Band Center for Proton‐Exchange Membrane Fuel Cells