Driven by the demand for the commercialization of fuel cell (FC) technology, we describe the design and fabrication of a highly durable FC electrocatalyst based on double-polymer-coated carbon nanotubes for use in polymer electrolyte membrane fuel cells. The fabricated electrocatalyst is composed of Pt-deposited polybenzimidazole-coated carbon nanotubes, which are further coated with Nafion. By...

In this paper, a new voltage aging model for the polymer electrolyte membrane fuel cell (PEMFC), which includes multiple degradation mechanisms proton exchange cells, is proposed. The parameters are identified using curve-fitting procedure based on long-term experimental data modular stack under New European Driving Cycle (NEDC). A good fit was found between and data, with R-squared values grea...

High temperature polymer electrolyte membrane fuel cells (HT-PEMFCs) are used from stationary to mobile applications and have the advantage of increased tolerances against impurities like H2S CO. However, air can limit their performance durability. Here, impact NH3-contaminated is studied during 500 h operation. 10 ppm NH3 in provokes a voltage decay at least −279.3 μV h−1 compared −18.1 operat...

Introduction: The conversion and storage of energy with a high efficiency, especially a high specific energy, will be an important factor in future energy storage technologies. The relatively simple possibility to store hydrogen and oxygen with high specific energy combined with high energy conversion efficiency in fuel cells and electrolyser presents an opportunity for the use of polymer elect...

Movable power sources of proton exchange membrane fuel cells (PEMFC) are the important research done in the current fuel cells (FC) field. The PEMFC system control influences the cell performance greatly and it is a control system for industrial complex problems, due to the imprecision, uncertainty and partial truth and intrinsic nonlinear characteristics of PEMFCs. In this paper an adaptive PI...

Polymer electrolyte membrane(PEM) fuel cells have higher efficiency and energy density and are capable of rapidly adjusting to power demands. Effective water management is one of the key issues for increasing the efficiency of PEMFC. In the current study, a three-dimensional(3D) lattice Boltzmann model is developed to simulate the water transport and oxygen diffusion in the gas diffusion layer(...

one of the most important fuel cells (fcs) is proton exchange membrane fuel cells (pemfcs). the outputvoltage of this fc depends on current loads. this paper tries to introduce, implement and control the voltage ofpemfc, during load variations. the output voltage of fuel cell should be constant during load variation. toachieve this goal, a controller should be designed. here, the lead-lag contr...

Accelerated degradation tests (ADTs) are commonly used to assess the durability of membrane electrode assembly (MEA) components consisting polymer electrolyte fuel cells (PEMFC) under harsh stress conditions, estimating their lifetime in actual use condition and uncovering vital mechanisms. ADTs apply mechanically, chemically, or thermally combined stressors efficiently investigate MEAs. Howeve...

Although they hold the promise of clean energy, state-of-the-art fuel cells based on polymer electrolyte membrane fuel cells are inoperable above 100 degrees C, require cumbersome humidification systems, and suffer from fuel permeation. These difficulties all arise from the hydrated nature of the electrolyte. In contrast, "solid acids" exhibit anhydrous proton transport and high-temperature sta...