PROBLEM TO BE SOLVED: To measure the distribution of current density on the power generation surface of a fuel cell easily and accurately, and to suppress the impact due to damage especially of a thin film resistor as much as possible.SOLUTION: A measuring device 10 includes a plurality of ...
PEM fuel cellcurrent density measurementcurrent density distributionconstruction optimizationA newly developed measurement system for current density distribution mapping has enabled a new approach for operational measurements in proton exchange membrane fuel cells (PEMFC). Taking into account previously ...
LIUHaoand HA GHuamin < FuelCellR DCener , Dalian nsiueOfChemical h$sics , ChineseAcadem$OfSciences , Dalian116023 , LiaOning , China > AbstractAmodifiedsubcellapproach asusedtomeasurethecurrentdensitydistributionofproton exchangemembranefuelcell < PEMFC > ithstraightchannelsflo field.ForPEMFC ithparalle...
It can be seen that as the temperature increases, the distribution of current density becomes more uniform by the decrease of the steepness of each curve. For the HT-PEM fuel cell, uniform current density distribution is important because it reduces the cost and expands the lifetime by the de...
Real-time current density distribution data under steady state as well as transient conditions are presented and it is shown that they can contribute to an improved understanding of water management and reactant distribution over the active fuel cell area. The importance of these factors for the ...
(middle) at a cell voltage of 0.6 V, with the composition shown in the gas channels and the gas diffusion electrodes. The current density distribution in the electrolyte (right) shows that the air feed limits the cell’s performance, resulting in a high current density at the position of ...
Measurement and Numerical Analysis of Current Density Distribution in Polymer-electrolyte Water Electrolysis Cell The high operational and capital costs of polymer electrolyte water electrolysis technology originate from limited catalyst utilization and the use of thic... T Murakami,T Hikosaka,T Aranaga,....
Geometry of a high-temperature PEM fuel cell. Ohmic Losses and Temperature Distribution in a Passive PEM Fuel Cell When you’re designing the air side of a passive fuel cell, the objective is to make sure that an even current density and heat profile exist over the cell, which is subject...
It was found that the current distribution map is very heterogeneous, with variations around ±50 % with respect to the average value during the whole lifetime of the cell. The non-uniformity of the current profile increases during the degradation, but it cannot be concluded that the current ...
PROBLEM TO BE SOLVED: To provide a fuel cell capable of contributing to the uniformity of current density distribution at a power generating area by enhancing the uniformity of water distribution caused by the unevenness of generated water, and to provide a fuel cell distribution plate. SOLUTION:...