Results 61 to 70 of about 5,611,362 (247)
Advanced Science, EarlyView.Interfacial synergy between carbon cloth and Pt‐free metal/nonmetal catalysts enhances charge transfer, wettability, active site accessibility, and hydrogen bubble release, enabling efficient and durable hydrogen evolution across acidic, neutral, and alkaline media for scalable green hydrogen production.
Syed Mohammed Hubaish +4 more
wiley +1 more source
Analysis of the Coupling Behavior of PEM Fuel Cells and DC-DC Converters
Energies, 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
Análise e desenvolvimento de modelo de transporte de massa visando a aplicação em células a combustível tipo PEM [PDF]
, 2012 Tese (doutorado) - Universidade Federal de Santa Catarina, Centro Tecnológico, Programa de Pós-Graduação em Engenharia Mecânica, Florianópolis, 2012O atual cenário mundial na área de energia demanda o desenvolvimento tecnológico de alternativas ...
Garcia Acevedo, Luis Evelio
core
Overcoming Out‐of‐Plane Conduction by Changing Nanosheet Morphology
Advanced Science, EarlyView.HTaWO6 membrane made of stacked nanotubes exhibits high out‐of‐plane proton conductivity of 1.7 mS/cm. High current density (1.26 A cm−2) and power density (294 mW cm−2) indicate the potential as a fuel‐cell electrolyte. The morphology‐driven strategy establishes topology engineering as a new design principle for efficient ion transport in two ...
Yuichi Sakuda +7 more
wiley +1 more source
Advanced Science, EarlyView.Commercial OPBI binders is regulated via a facile formic‐acid protonation strategy without disrupting the polymer backbone. Protonation introduces positively charged benzimidazole sites, inducing interchain electrostatic repulsion that loosens chain packing, enlarges intermolecular spacing, and promotes uniform binder dispersion over catalyst surfaces.
Jinzhen Huang +5 more
wiley +1 more source
Electrica, 2009 This paper presents a dynamic model of Fuel cell system for residential power generation. The models proposed include a fuel cell stack model, reformer model and DC/AC inverter model.
Khaled MAMMAR, Abdelkader CHAKER
doaj +2 more sources
Lógica borrosa para la estimación de estados críticos de una pila de combustible PEM
Maskana, 2016 RESUMEN La determinación en tiempo real de los estados críticos de operación de la pila de combustible de membrana intercambio protónico (siglas en ingles, PEM) es uno de los principales retos para los sistemas de control de pilas de combustible PEM ...
Wilton E. Agila, Víctor M. Huilcapi
doaj
On-line Tracking of Fuel Cell System Impedance Using Extended Kalman Filter
Chemical Engineering Transactions, 2013 This paper presents a new measurement equipment and computational method for on-line estimation and tracking of PEM fuel cell system impedance. The algorithm is developed to address one of the main issues influencing the reliability and durability of PEM
A. Debenjak, M. Gasperin, J. Petrovcic
doaj +1 more source
Deciphering Intricacies in Directional CO2 Conversion From Electrolysis to CO2 Batteries
Advanced 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
MATEC Web of Conferences, 2018 Additive Manufacturing (AM) is a reliable technique to build multifunctional components with any complex geometry. The present paper assesses the role of two vital AM techniques, namely Selective Laser Sintering (SLS) and Selective Laser Melting (SLM) in
Jayakumar Arunkumar
doaj +1 more source