Phosphoric Acid Invasion in High Temperature PEM Fuel Cell Gas Diffusion Layers
نویسندگان
چکیده
منابع مشابه
Study of Gas Diffusion Layers in Pem Fuel Cells
Fuel cells are electrochemical devices which convert chemical energy of a reacting fuel directly into electricity with high efficiency and no pollution. Proton Exchange/ Polymer Electrolyte Membrane (PEM) fuel cells are likely to be among one of the most promising energy sources for transportation, heating and power generation. Some of the key materials used in PEM fuel cells are catalysts, mem...
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Heat transfer through the gas diffusion layer (GDL) is a key process in the design and operation of a PEM fuel cell. The analysis of this process requires determination of the effective thermal conductivity. This transport property differs significantly in the through-plane and in-plane directions due to the anisotropic micro-structure of the GDL. In the present study, a novel test bed that all...
متن کاملAnalytic determination of the effective thermal conductivity of PEM fuel cell gas diffusion layers
Accurate information on the temperature field and associated heat transfer rates are particularly important in devising appropriate heat and water anagement strategies in proton exchange membrane (PEM) fuel cells. An important parameter in fuel cell performance analysis is the effective hermal conductivity of the gas diffusion layer (GDL). Estimation of the effective thermal conductivity is com...
متن کاملImpact of anisotropy level of gas diffusion layer on the temperature distribution of a PEM fuel cell cathode electrode
Proton exchange membrane (PEM) fuel cells being employed in fuel cell vehicles (FCVs) are promising power generators producing electric power from fuel stream via porous electrodes. Structure of carbon paper gas diffusion layers (GDLs) applying in the porous electrodes can have a great influence on the PEM fuel cell performance and distribution of temperature, especially at the cathode side whe...
متن کاملEffect of Ptfe on Thermal Conductivity of Gas Diffusion Layers of Pem Fuel Cells
Through-plane thermal conductivity of 14 SIGRACET gas diffusion layers (GDLs), including series 24 & 34, as well as 25 & 35, are measured under different compressive pressures, ranging from 2 to 14 bar, at the temperature of around 60 ͦC. The effect of compression, PTFE loadings, and micro porous layer (MPL) on thermal conductivity of the GDLs and their contact resistance with an iron clamping s...
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ژورنال
عنوان ژورنال: Electrochimica Acta
سال: 2017
ISSN: 0013-4686
DOI: 10.1016/j.electacta.2017.10.054