In this paper, the effect of changes in thermal conductivity porous electrodes three coordinate directions on capability proton exchange membrane fuel cells is investigated basis current density versus voltammetry curves, and temperature distribution water-carrying capacity membrane. The results show that when cell discharge voltage PEMFC 0.3 V, Z-direction electrode has a greater performance t...

The proton exchange membrane fuel cell (PEMFC) is the fastest growing technology on market. Due to their sustainable nature, PEMFCs are widely adopted as a renewable energy resource. Fabricating PEMFC costly process; hence, mathematical modeling and simulations necessary in order fully optimize its performance. Alongside this, feasibility of waste heat recovery system based organic Rankine cycl...

Water management is critical for the function of proton exchange membrane fuel cell (PEMFC). The local through-thickness temperature gradient cathode gas diffusion layer (GDL) affect water a PEMFC. That has been known and targeted discussion several years. In this study, effects inside PEMFC was investigated by controlling it externally with fine (testing diameter about 30 ?m) thin (thickness 6...

Fuel cells are appealing for a variety of energy needs, but the high materials and manufacturing costs have hampered their commercialization. The limited availability and the high cost of the currently used platinum catalysts, for example, pose a serious problem in their practical application. We report here non-platinum electrocatalyst systems, such as Pd-Co-Au and Pd-Ti, that are proposed fro...

The operating conditions can have uncontrolled effects on the voltage of a High-Temperature Proton Exchange Membrane Fuel Cell (HT-PEMFC). For instance, HT-PEMFC be used at ambient pressure, i.e., without having back pressure regulator. In this case, variation in atmospheric directly affects pressures inside fuel cell, which induces variation. Moreover, transient phases, several coupled phenome...

The harmful impacts of fossil-fuel-based engines on the environment have resulted in development other alternatives for different types vehicles. Currently, batteries and fuel cells are being used automotive industry, while promising progress maritime aerospace sectors is foreseen. As a case study sector, an unmanned aerial vehicle (UAV) was considered. goal novelty this its analysis possibilit...

Proton exchange membrane fuel cells (PEMFC) are widely used in transportation systems owing to their desirable characteristics such as high efficacy and low operating temperature. However, the cell exhibit load changes well voltage power losses so reduce dependence on battery. The aim of present study was explore composition basic working principle PEMFC. A PEMFC electrochemical reaction model ...

Fuel cells output power depends on the operating conditions, including cell temperature, oxygen pressure, hydrogen tempureter . In each particular condition, there is only one unique point for a fuel system with maximum output. Thus, tracking (MPPT) controller needed to increase efficiency of PEMFC systems. this paper an efficient method fuzzy logic proposed MPPT proton exchange membrane (PEM) ...

Although proton-exchange membrane fuel cells (PEMFC) are considered as a safe and clean energy technology, aging phenomena of the membrane-electrode assembly (MEA), more particularly membrane, still restrict PEMFC lifetime. In this paper, ex-situ accelerated chemical degradation – via Fenton's reagents exposure reinforced Nafion™ XL is performed in order to investigate impact on structure prope...

This chapter presents general mathematical models and numerical simulation for proton exchange membrane fuel cell (PEMFC) to evaluate the effects of various designs and operating parameters on the PEMFC performance. Both one and two-dimensional models are presented; the advantages and weaknesses of using one-dimensional and two-dimensional models are discussed in detail. Subsequently, a general...