Proton exchange membrane fuel cell (PEMFC) is a portable and clean power generation device. The structural arrangement of the flow field has significant influence on delivery efficiency PEMFC. In this article, new bionic channel designed based inspiration spider shape. branch width corner are studied as focus, its simulation carried out by method computational fluid dynamics (CFD). results show...

The efficiency and durability of proton exchange membrane fuel cell (PEMFC) depend on precise control temperature. In practical applications, temperature variations due to dynamic loads can degrade performance thus reduce the duration cell. To solve problem, a composite method stack is presented in this study. First, model PEMFC thermal management system established, then feed-forward fuzzy PID...

A transparent model cell for direct ex-situ visualization of the dynamic characteristics growth, deformation and detachment liquid water in flow channel proton exchange membrane fuel (PEMFC) is designed. It fulfills requirements clear side imaging droplet behaviors channel. Different air velocities are implemented experiments to measure growth on gas diffusion layer (GDL) surface. The results s...

Proton exchange membrane fuel cells (PEMFC) are a promising clean power source that can be used in variety of applications such as automobiles, stationary plants, and portable devices. The application problem PEM is multiscale process involving porous media, consisting series mass, momentum, energy transfers through gas channels, current electrode assemblies, electrochemical reactions at three-...

the electrocatalysis of the oxygen reduction reaction (orr) on carbon supportedpt-v (1:1) catalyst in polymer electrolyte fuel cells (pefc) was investigated. atan oxygen pressure of one atm an enhanced electrocatalytic property of pt-v/ccompared with pt/c is revealed. these results indicate the occurrence of adifferent electrocatalytic mechanism for the orr on pt/c and pt-v/c. anincrease of mas...

Proton exchange membrane fuel cell (PEMFC) has acquired increasing importance because of operating at higher efficiency and producing environmentally friendly power low temperatures over the past decade. Flow channel as a vital part PEMFC plays critical role for augmenting performance PEMFC. In this paper, single phase, 3-D model is generated to examine impact cross-section geometry on performa...

Proton Exchange Membrane Fuel Cell (PEMFC) generates electricity through the reaction of hydrogen and oxygen. PEMFC is considered clean technology since by-products are only electricity, water, heat. Thermal management can be further improved adoption nanofluids as its cooling medium. Nanofluids fluids that contain suspensions nanoparticles in their base fluid. have better heat transfer perform...

Proton exchange membrane fuel cell (PEMFC) long-term prognostic facilitates reducing the time/cost of durability tests and is a critical starting point for control/maintenance suggestions. Long short-term memory (LSTM) recurrent neural networks have excellent time series processing capabilities are proved to be useful PEMFC. However, LSTM models usually suffer from accumulated errors model reco...

RESUMEN: La distribución del agua en una PEMFC afecta su comportamiento y durabilidad, por tanto la comprensión de los mecanismos fundamentales del transporte del agua es imperativa y pueden ser fuertemente influenciados mediante estrategias apropiadas de control. Se ha desarrollado un modelo dinámico, no isotérmico, bidimensional de una PEMFC autohumidificada y de cátodo abierto. El modelo con...

Although proton exchange membrane fuel cell (PEMFC) systems are expected to have lower environmental impacts in the operational phase, compared conventional energy conversion systems, there still certain economic, operational, and setbacks. Durability under a wide range of operating conditions presents challenge because degradation processes affect PEMFC efficiency. Typically, life cycle assess...