منابع مشابه
Water Management in A PEMFC: Water Transport Mechanism and Material Degradation in Gas Diffusion Layers
Polymer electrolyte membrane fuel cells (PEMFCs) directly convert the chemical energy of the reactants into electrical energy and usually consist of a proton exchange membrane (PEM) sandwiched between two catalyst layers (CLs), two porous gas diffusion layers (GDLs) often coated with a microporous layer (MPL) on the CL side, and two bipolar plates with embedded gas channels. Protons and electro...
متن کاملDetermination of effective water vapor diffusion coefficient in pemfc gas diffusion layers
The primary removal of product water in proton exchange membrane (PEM) fuel cells is through the cathode gas diffusion layer (GDL) which necessitates the understanding of vapor and liquid transport of water through porous media. In this investigation, the effect of microporous layer (MPL) coatings, GDL thickness, and polytetrafluorethylene (PTFE) loading on the effective water vapor diffusion c...
متن کاملDurability test with fuel starvation using a Pt/CNF catalyst in PEMFC
In this study, a catalyst was synthesized on carbon nanofibers [CNFs] with a herringbone-type morphology. The Pt/CNF catalyst exhibited low hydrophilicity, low surface area, high dispersion, and high graphitic behavior on physical analysis. Electrodes (5 cm2) were prepared by a spray method, and the durability of the Pt/CNF was evaluated by fuel starvation. The performance was compared with a c...
متن کاملInvestigation of Water Vapor Diffusivity through Gdl of a Pemfc
Water transport through the gas diffusion layer (GDL) of a proton exchange membrane (PEM) fuel cell is of critical importance in the operation of the fuel cell. In this study, the transport of water vapor through the GDL is investigated. A one-dimensional, single-phase heat and mass transfer model is developed to investigate the diffusivity of water vapor through the GDL of a PEMFC. An experime...
متن کاملClay as a dispersion agent in anode catalyst layer for PEMFC
Clay as a dispersion agent in anode catalyst layer for PEMFC Yi-Hao Pai a, Jyh-Harng Ke b, Chih-Cheng Chou c, Jiang-Jen Lin d, Jyh-Myng Zen b,∗, Fuh-Sheng Shieu a,∗ a Department of Materials Engineering, National Chung Hsing University, Taichung 40227, Taiwan b Department of Chemistry, National Chung Hsing University, Taichung 40227, Taiwan c Department of Chemical Engineering, National Chung H...
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ژورنال
عنوان ژورنال: ECS Transactions
سال: 2019
ISSN: 1938-6737
DOI: 10.1149/1.3635598