نتایج جستجو برای: pemfc

تعداد نتایج: 1182  

Journal: :Journal of the American Chemical Society 2005
José L Fernández Vadari Raghuveer Arumugam Manthiram Allen J Bard

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...

2002
M. T. Iqbal

This paper describes simulation results of a small 500 W wind fuel cell hybrid energy system. The system consists of a Southwest Wind Power Inc. AIR 403 wind turbine, a Proton Exchange Membrane Fuel Cell (PEMFC) and an electrolyzer. Dynamic modeling of various components of this small isolated system is presented. Simulink is used for the dynamic simulation of this nonlinear 48 V hybrid energy ...

2006
Pedro J. Zapata Pratyay Basak Keith Reed Carson Meredith

Among fuel cell technologies, polymer electrolyte membrane fuel cells (PEMFCs) have gained momentum at a strong pace in small to medium scale energy generation (e.g., mobile applications, transportation, etc). Historically, the development of polymer electrolytes has gone through several stages: from ionic polymers of poly(ethylene oxide)-salt complexes, polystyrene sulfonate polymers, to perfl...

Journal: :IEEE Transactions on Transportation Electrification 2021

The degradation seriously affects the durability and cost of proton exchange membrane fuel cell (PEMFC). This article presents a novel model-driven method based on frequency-domain Kalman filter (FDKF) voltage model to predict PEMFC in frequency domain. advantage proposed FDKF is that it can process data groups; thus, computation time be greatly reduced with high accuracy. Two experiments under...

Journal: :Intelligent Automation and Soft Computing 2021

The problem of parameter estimation the proton exchange membrane fuel cell (PEMFC) model plays a significant role in simulation and optimization PEMFC system. In current research, moth flame algorithm (MFOA) is used to identify best parameters PEMFC. Two different PEMFCs, Nedstack PS6, 6 kW, SR-12 PEM 500 W are demonstrate accuracy MFOA. Throughout process, seven unidentified (℥1</s...

Journal: :Annual Reviews in Control 2016
Daniel Hissel Marie-Cécile Péra

Continuous depletion of the crude oil and gradual increase in the oil price have emphasized the need of a suitable alternative to our century-old oil-based economy. A clean and efficient power supply device based on a renewable energy source has to be available to face this issue. Among the different technological alternatives, fuel cell power generation becomes a more and more interesting and ...

Journal: :Journal of Electroanalytical Chemistry 2022

This work focuses on the production of electricity using chloralkaline high temperature PEM fuel cells (HT-PEMFC) comparing, within range 120–180 °C, performance a cell equipped with cathode containing novel Ru/Pt catalyst manufactured at mild conditions another which contains conventional Ru based (Ru0.75Pt0.25O2). Performance electrode 120 °C is much better, but this situation reverses higher...

Journal: :International Journal of Hydrogen Energy 2021

In this work, the influence of geometric and mechanical properties constitutive layers a Proton Exchange Membrane Fuel Cell (PEMFC) on system performance was investigated. More specifically, study focused internal electrical resistances due to interlayer contacts. Indeed, contact are one main sources ohmic losses in PEMFC therefore require special attention improve efficiency. To end, Design Ex...

Journal: :Mathematics 2021

In this paper, a finite time thermodynamic model of high temperature proton exchange membrane fuel cell (HT-PEMFC) is established, in which the irreversible losses polarization and leakage current during operation are considered. The influences operating temperature, thickness, phosphoric acid doping level, hydrogen oxygen intake pressure on maximum output power density Pmax efficiency ?max stu...

Journal: :IEEE Access 2021

This project aims to design a predictive maximum power point tracking (MPPT) for proton exchange membrane fuel cell system (PEMFC). MPPT includes the control algorithm of DC-DC boost converter in fully functional mathematical modeling PEMFC system. The is controlled by and regulates voltage extract output power. All simulations were performed using MATLAB software show characteristics extracted...

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