Results 41 to 50 of about 3,247 (230)

Optimal Parameter Extraction of PEM Fuel Cell Using a Hybrid Weighted Mean of Vectors and Nelder-Mead Simplex Method

open access: yesIEEE Access
Accurate modeling is an important aspect for a reliable design, control and optimization of proton exchange membrane (PEM) fuel cell. The mathematical model of PEM fuel cell involves a set of non-linear equations and is considered as multi-variate, multi-
Rahul Khajuria   +3 more
doaj   +1 more source

Analysis of the Coupling Behavior of PEM Fuel Cells and DC-DC Converters

open access: yesEnergies, 2009
The connection between PEM fuel cells and common DC-DC converters is examined. The analysis is model-based and done for boost, buck and buck-boost converters. In a first step, the effect of the converter ripples upon the PEM fuel cell is shown.
Achim Kienle   +2 more
doaj   +1 more source

Leveraging Digital Advanced Manufacturing to Enable Polymer Electrolyte Fuel Cells With Ultrahigh Gravimetric Power Density

open access: yesAdvanced Energy Materials, EarlyView.
This study employs digital advanced manufacturing to develop lightweight, compact porous distributors as alternatives to conventional bipolar plates in PEM fuel cells. A graphene‐coated nickel foam achieves a power density of 1.52 W cm−2, while titanium‐based designs deliver lightweight solutions: an LPBF‐fabricated Gyroid lattice reaches 1.36 W cm−2 ...
Hadi Heidary   +9 more
wiley   +1 more source

Optimization of Fuel Cell Performance Using Computational Fluid Dynamics

open access: yesMembranes, 2021
A low cost bipolar plate materials with a high fuel cell performance is important for the establishment of Proton Exchange Membrane (PEM ) fuel cells into the competitive world market.
Tabbi Wilberforce   +8 more
doaj   +1 more source

PEM Fuel Cells: Applications

open access: yes, 2022
The proton-exchange membrane fuel cell (PEMFC) emerged in the early 1990s and is a device that can produce clean power by the direct electrochemical oxidation of hydrogen. This chapter outlines the main features of the PEMFC and its unique operating characteristics.
openaire   +3 more sources

Thin Reinforced Sulfonated Poly(phenylene sulfone) Membranes for Durable Water Electrolysis: Suppressed Swelling and Enhanced Stability Over 2000 Hours

open access: yesAdvanced Energy Materials, EarlyView.
Hydrocarbon membranes have the potential to significantly enhance the efficiency of water electrolyzers. However, their application is often limited by insufficient stability resulting from excessive swelling. This work presents a strategy to achieve efficient, safe and stable operation of a 24 µm thin hydrocarbon membrane by combining a modified ...
Clara Schare   +8 more
wiley   +1 more source

CO Spillover‐Induced Directed C─C Coupling for CO2 Electroreduction to Multicarbon Products

open access: yesAdvanced Energy Materials, EarlyView.
Efficient CO2 electroreduction to C2+ is achieved by engineering Cu@Ag interfaces, which enhance interfacial CO spillover from Ag to Cu, enrich *CO coverage, and accelerate C─C coupling. A quantitative relationship between CO spillover rate and C2+ activity is also established, defining spillover as a measurable descriptor and advancing rational ...
Yue Guo   +6 more
wiley   +1 more source

Effect of the Operation and Humidification Temperatures on the Performance of a Pem Fuel Cell Stack on Dead-End Mode.

open access: yesInternational Journal of Electrochemical Science, 2011
Proton exchange membrane (PEM) fuel cells have attracted grate attention in recent years as a promising replacement for traditional engines. The performance of PEM fuel cells is known to be influenced by many parameters such as operation temperature and ...
M. Pérez-Page, V. Pérez-Herranz
doaj   +1 more source

Deciphering Intricacies in Directional CO2 Conversion From Electrolysis to CO2 Batteries

open access: yesAdvanced Energy Materials, EarlyView.
This review will delve into the inherent connections and distinctions of CO2‐directed conversion in ECO2RR and CO2 batteries, in terms of product types, catalyst selection, catalytic mechanisms, and electrochemical performances, while proposing a benchmarking framework for the evaluation of CO2 batteries and innovative CO2 battery configurations for ...
Changfan Xu   +5 more
wiley   +1 more source

Modular PEM Fuel Cell SCADA & Simulator System

open access: yesResources, 2015
The paper presents a Supervision, Control, Data Acquisition and Simulation (SCADA & Simulator) system that allows for real-time training in the actual operation of a modular PEM fuel cell system.
Francisca Segura, José Manuel Andújar
doaj   +1 more source

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