PEMFCs depend on proper water management to obtain high power density and energy efficiency. Traditionally, water management has been addressed by system design and engineering. That is, by adding auxiliary systems to the basic fuel cell system to provide humidification to the anode and remove water from the cathode. This approach adds significant complexities and costs and reduces the overall ...

This paper provides a comprehensive review of the temperature control in proton exchange membrane fuel cells. Proton (PEM) cells inevitably emit certain amount heat while generating electricity, and cell can only exert its best performance appropriate range. At same time, generated cannot spontaneously keep uniform stable, is required. part thermal energy be classified into two groups. On one h...

proton exchange membrane fuel cells (pemfcs) with a dead-ended anode and cathode can obtain high hydrogen and oxygen utilization by a comparatively simple system. nevertheless, the accumulation of the water in the anode and cathode channels might cause a local fuel starvation degrading the performance and durability of pemfcs. in this study, a brand new design for a polymer electrolyte membrane...

A novel hybrid fuel cell is described using at least one electrode operating at high pH in an effort to use the high conductivity of Nafion and exploit the electrochemical advantages of high-pH operation. The electrochemical behavior of a hybrid anion exchange membrane (AEM)/proton exchange membrane (PEM) junction and corresponding fuel cell are presented. Two AEM/PEM junctions and fuel cells h...

The basic principles of work of proton exchange membrane fuel cell (PEMFC) are presented. The real experiments with PEMFC are made. Current – voltage characteristic in electrolyses, voltage, current and power characteristics of PEMFC are given. The efficiencies at different operating modes are made. The final conclusion about characteristics and efficiency of PEMFC are derived.

This paper describes a virtual prototype of a PEMFC based Hybrid Electrical Military Vehicle developed within the Virtual Test Bed (VTB) environment. The VTB is software for modeling, simulation, and virtual prototyping of multi-disciplinary systems. Several of the main models used in the vehicle system especially the fuel cell model are described, and then a system-level model of a High Mobili...

A new approach to elucidate the operation and control of Polymer Electrolyte Membrane (PEM) fuel cells is being developed. A global reactor engineering approach is applied to PEM fuel cells to identify the essential physics that govern the dynamics in PEM fuel cells. Reaction engineering principles are employed to develop a one-dimensional differential PEM fuel cell suitable for elucidating the...

modeling the heat and mass transport in micro channel is being used extensively in researches and industrial applications. the aim is optimizing fuel cell designs before building a prototype for engineering application. in this study, numerical, three-dimensional, single phase computational fluid dynamics model of a proton exchange membrane fuel cell with both the gas distribution flow channels...

Proton exchange membrane fuel cells (PEMFCs) with a dead-ended anode and cathode can obtain high hydrogen and oxygen utilization by a comparatively simple system. Nevertheless, the accumulation of the water in the anode and cathode channels might cause a local fuel starvation degrading the performance and durability of PEMFCs. In this study, a brand new design for a polymer electrolyte membrane...