Analisis Tenaga Bebas dan Sifat Mangkin PtRuFeNi untuk Sel Fuel Metanol Langsung (DMFC) Tunggal

Basri, Sahriah; Kamarudin, Siti Kartom

doi:10.17576/jsm-2019-4806-09

Cited by 2 publications

(2 citation statements)

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“…Therefore, a catalyst is needed to promote its dehydrogenation. The catalyst is an important condition for the widespread application of DMFCs. − So far, among all catalysts, platinum (Pt)-based catalysts are the best electrocatalysts for DMFCs under acidic and alkaline conditions. ,,− However, the commercialization of platinum catalysts still faces severe technical challenges, including high cost, poor durability, and low tolerance to CO poisoning. − In addition, due to the existence of internal resistance in the battery and the polarization phenomenon generated during electric shock work, especially the high oxidation overpotential of methanol, the actual efficiency and specific energy of the battery are greatly reduced.…”

Section: Introductionmentioning

confidence: 99%

Theoretical Study on the O–H Fracture of Methanol on Pt_nCu_4–n (n = 1, 2, 3) Catalysts with Different Coverages

Tong,

Wang,

Cao

et al. 2024

J. Phys. Chem. A

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Direct methanol fuel cells (DMFCs) have attracted increasing attention as a very promising and important energy source. In this paper, density functional theory (DFT) is used to study the structure and O−H fracture mechanism of methanol adsorption on Pt n Cu 4−n (111) (n = 1, 2, 3) binary metal catalyst surfaces under different coverages. By comparing the adsorption energy and dehydrogenation energy barriers of methanol, it is found that the adsorption strength and dehydrogenation energy barriers of methanol on Pt and Cu sites decreased with increasing coverage. At the same Pt and Cu ratio, methanol is more easily adsorbed on Cu sites. When Pt/ Cu = 3:1 and 1:3, the PtCu binary catalyst has a significant impact on the energy barrier of breaking the O−H bond in methanol with the increase of coverage. Especially when Pt/Cu = 1:3 and the coverage is 1/4 ML, the energy barriers of O−H bond breaking in methanol on Pt and Cu sites are 0.63 and 0.61 eV, respectively, which are lower than that on pure Pt. It means that the Cu sites played a very important role in reducing the O−H fracture energy barrier of methanol. When Pt/Cu = 1:1, the change in the dehydrogenation energy barrier of methanol on Pt sites and Cu sites is not significant, indicating that the coverage has little effect on it.

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Section: Introductionmentioning

confidence: 99%

Theoretical Study on the O–H Fracture of Methanol on Pt_nCu_4–n (n = 1, 2, 3) Catalysts with Different Coverages

Tong,

Wang,

Cao

et al. 2024

J. Phys. Chem. A

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“…Fuel cells are generally classified based on their electrolyte and can be grouped into six major kinds of fuel cells, namely, alkaline fuel cells, phosphoric acid fuel cells, molten carbonate fuel cells, solid oxide fuel cells, polymer electrolyte fuel cells, and direct methanol fuel cells 4,5 . Although fuel cell technologies are benign to the environment, numerous works 6‐10 have been conducted and still need to be performed regarding the component materials, such as the electrode, catalyst, and system, for the technology to be sufficiently practical for penetration of the market alongside with other renewable energy sources given the often high manufacturing cost resulting from the use of expensive materials, such as platinum as the catalyst.…”

Section: Introductionmentioning

confidence: 99%

Critical review on development of magnesium alloy as anode inMg‐Airfuel cell and additives in electrolyte

et al. 2021

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Summary This study aimed to provide a critical review of the magnesium‐air fuel cell (MAFC) system to provide readers with an overall comprehension of MAFC, which focuses on the modification of the magnesium anode and properties of saltwater as an electrolyte. Although MAFC is benign to the environment, it is well‐known for its challenging corrosion issue and by‐product deposition that affect its durability for commercialization and long‐term application. Since that MAFC is able to use seawater as electrolyte, it has great potential to be used as an alternative energy option for the marine sector. This journal will dissect the ability of MAFC to be used as a competitive alternative energy. Over the years, researchers have adopted several approaches, such as experimenting with different types of magnesium alloy and anode fabrication techniques, to tackle corrosion problems to alter the microstructure and mechanical properties of the anode in addition to applying a coating protection and using Mg‐based composite material. Furthermore, studies intriguingly and gradually focused on electrolyte formulation with different types of additives to address the debilitating precipitation issue and improve the discharge performance. Given the problems that arise in the system, currently, MAFC commercial products are only suitable as emergency back‐up power. In future work, an improved storage system for MAFC should be built to accommodate the precipitation products while maintaining the desired cell performance.

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Analisis Tenaga Bebas dan Sifat Mangkin PtRuFeNi untuk Sel Fuel Metanol Langsung (DMFC) Tunggal

Cited by 2 publications

References 5 publications

Theoretical Study on the O–H Fracture of Methanol on Pt_nCu_4–n (n = 1, 2, 3) Catalysts with Different Coverages

Theoretical Study on the O–H Fracture of Methanol on Pt_nCu_4–n (n = 1, 2, 3) Catalysts with Different Coverages

Critical review on development of magnesium alloy as anode inMg‐Airfuel cell and additives in electrolyte

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Analisis Tenaga Bebas dan Sifat Mangkin PtRuFeNi untuk Sel Fuel Metanol Langsung (DMFC) Tunggal

Cited by 2 publications

References 5 publications

Theoretical Study on the O–H Fracture of Methanol on PtnCu4–n (n = 1, 2, 3) Catalysts with Different Coverages

Theoretical Study on the O–H Fracture of Methanol on PtnCu4–n (n = 1, 2, 3) Catalysts with Different Coverages

Critical review on development of magnesium alloy as anode inMg‐Airfuel cell and additives in electrolyte

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Theoretical Study on the O–H Fracture of Methanol on Pt_nCu_4–n (n = 1, 2, 3) Catalysts with Different Coverages

Theoretical Study on the O–H Fracture of Methanol on Pt_nCu_4–n (n = 1, 2, 3) Catalysts with Different Coverages