Role of Oxygen Permeation in Direct Ethanol Fuel Cells with Noble Metals Anodes

2013 ◽  
Keyword(s):  
Fuel Cells ◽  
Noble Metals ◽  
Oxygen Permeation ◽  
Ethanol Fuel ◽  
Direct Ethanol Fuel Cells

The role of an anode microporous layer in direct ethanol fuel cells at different ethanol concentrations

2014 ◽  
Vol 39 (4) ◽  
pp. 1775-1782 ◽  
Author(s):  
Panuwat Ekdharmasuit ◽  
Apichai Therdthianwong ◽  
Supaporn Therdthianwong
Keyword(s):  
Fuel Cells ◽  
Microporous Layer ◽  
Ethanol Fuel ◽  
Direct Ethanol Fuel Cells

Enhanced Catalytic Activity of Pt for Electrooxidation of Ethanol by Using Silica-Carbon Composite as the Catalyst Support

2016 ◽  
Vol 698 ◽  
pp. 47-52 ◽  
Author(s):  
Hirokazu Ishitobi ◽  
Yurina Ino ◽  
Nobuyoshi Nakagawa
Keyword(s):  
Catalytic Activity ◽  
Fuel Cells ◽  
Noble Metals ◽  
Carbon Nanofiber ◽  
Specific Activity ◽  
Catalyst Support ◽  
Active Surface Area ◽  
Ethanol Fuel ◽  
Direct Ethanol Fuel Cells ◽  
Slow Kinetics

The technical issue of direct ethanol fuel cells is slow kinetics of ethanol electrooxidation by using noble metals such as Pt. We propose silica-embedded carbon nanofiber (SECNF) as a catalyst support for the electrooxidation of ethanol to improve catalytic activity of Pt. SECNF was prepared by electrospinning, then Pt nanoparticles were deposited on SECNF. Catalyst characterizations were performed by SEM, EDX, and XRD. Cyclic voltammetry was performed to analyze catalytic activity of Pt/SECNF. The mass activity of Pt/SECNF was 2.9 times higher than a commercially available Pt/carbon catalyst (Pt/Ccom). Electrochemically active surface area of Pt/SECNF was lower than Pt/Ccom. Hence, the activity enhancement is attributed to the improvement of specific activity for Pt/SECNF. This enhancement is attributed to the interaction between Pt and SiO2 like hydrogen spillover. Pt/SECNF is a promising catalyst for direct ethanol fuel cells which can reduce Pt loading.

scholarly journals Efficient Chitosan/Nitrogen-Doped Reduced Graphene Oxide Composite Membranes for Direct Alkaline Ethanol Fuel Cells

2021 ◽  
Vol 22 (4) ◽  
pp. 1740 ◽  
Author(s):  
Selestina Gorgieva ◽  
Azra Osmić ◽  
Silvo Hribernik ◽  
Mojca Božič ◽  
Jurij Svete ◽  
...  
Keyword(s):  
Fuel Cells ◽  
Composite Membranes ◽  
Nanocomposite Membranes ◽  
Ethanol Fuel ◽  
Direct Ethanol Fuel Cells ◽  
Graphene Oxides ◽  
Reduced Graphene ◽  
Structure Morphology ◽  
Graphene Derivatives ◽  
Doped Graphene

Herein, we prepared a series of nanocomposite membranes based on chitosan (CS) and three compositionally and structurally different N-doped graphene derivatives. Two-dimensional (2D) and quasi 1D N-doped reduced graphene oxides (N-rGO) and nanoribbons (N-rGONRs), as well as 3D porous N-doped graphitic polyenaminone particles (N-pEAO), were synthesized and characterized fully to confirm their graphitic structure, morphology, and nitrogen (pyridinic, pyrrolic, and quaternary or graphitic) group contents. The largest (0.07%) loading of N-doped graphene derivatives impacted the morphology of the CS membrane significantly, reducing the crystallinity, tensile properties, and the KOH uptake, and increasing (by almost 10-fold) the ethanol permeability. Within direct alkaline ethanol test cells, it was found that CS/N rGONRs (0.07 %) membrane (Pmax. = 3.7 mWcm−2) outperformed the pristine CS membrane significantly (Pmax. = 2.2 mWcm−2), suggesting the potential of the newly proposed membranes for application in direct ethanol fuel cells.

Brief review of solid polymer electrolyte for direct ethanol fuel cells applications

2021 ◽  
Author(s):  
Suhaila Abdullah ◽  
Norazlina Hashim ◽  
Nurul Aniyyah Mohd Shobery ◽  
Nabihah Abdullah ◽  
lily Shakirah Hassan
Keyword(s):  
Fuel Cells ◽  
Polymer Electrolyte ◽  
Solid Polymer Electrolyte ◽  
Solid Polymer ◽  
Ethanol Fuel ◽  
Direct Ethanol Fuel Cells

Different anode catalyst for high temperature polybenzimidazole-based direct ethanol fuel cells

2013 ◽  
Vol 38 (1) ◽  
pp. 620-630 ◽  
Author(s):  
José J. Linares ◽  
Thairo A. Rocha ◽  
Sabrina Zignani ◽  
Valdecir A. Paganin ◽  
Ernesto R. Gonzalez
Keyword(s):  
Fuel Cells ◽  
High Temperature ◽  
Anode Catalyst ◽  
Ethanol Fuel ◽  
Direct Ethanol Fuel Cells

New Trends in Direct Ethanol Fuel Cells

2013 ◽  
pp. 429-452 ◽  
Author(s):  
Thiago dos Santos Almeida ◽  
Adalgisa Rodrigues De Andrade
Keyword(s):  
Fuel Cells ◽  
Ethanol Fuel ◽  
Direct Ethanol Fuel Cells
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