Results 111 to 120 of about 102,266 (349)

Group Vibrational Mode Assignments as a Broadly Applicable Tool for Characterizing Ionomer Membrane Structure as a Function of Degree of Hydration [PDF]

open access: yes, 2020
Infrared spectra of Nafion, Aquivion, and the 3M membrane were acquired during total dehydration of fully hydrated samples. Fully hydrated exchange sites are in a sulfonate form with a C₃V local symmetry. The mechanical coupling of the exchange site to a
Abu-Hakmeh, Khaldoon   +13 more
core  

Fully Textured Monolithic Sb2S3/Silicon Tandem for Unbiased and Stable Solar‐Driven Water Splitting Paired with Iodide Oxidation Reaction

open access: yesAdvanced Science, EarlyView.
Monolithically integrated Sb2S3 on industry‐compatible textured silicon for tandem photoelectrochemical hydrogen evolution coupled with iodide oxidation. ABSTRACT Solar‐driven photoelectrochemical (PEC) production of chemical fuels such as hydrogen is a viable solution to address climate neutrality objectives.
Jihong Min   +13 more
wiley   +1 more source

FUEL CELL PROTON EXCHANGE MEMBRANE - PRESENT AND PERSPECTIVES [PDF]

open access: yesAnnals: Series on engineering sciences (Academy of Romanian Scientists), 2012
The fuel cells could contribute to the reduction of the pollution emission and the fossil fuels due to the conversion efficiency which is higher than the other energy conversion systems.
Victor CIUPINA   +3 more
doaj  

A multi-objective optimisation model for a general polymer electrolyte membrane fuel cell system [PDF]

open access: yes, 2010
This paper presents an optimisation model for a general polymer electrolyte membrane (PEM) fuel cell system Suitable for efficiency and size trade-offs investigation.
Ang, SMC, Brett, DJL, Fraga, ES
core  

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

Main‐Chain Ion‐Pair Polybenzimidazole Membranes Enabling Reduced‐Temperature HT‐PEMFC Operation (Down to 120°C)

open access: yesAdvanced Energy Materials, EarlyView.
Embedding imidazolium‐biphosphate ion pairs directly into the polybenzimidazole main chain simultaneously stabilizes phosphoric acid and preserves continuous proton transport pathways. Strong ion‐pair and hydrogen‐bond interactions suppress acid leaching while maintaining high conductivity, enabling stable and durable high‐temperature fuel cell ...
Huina Lin, Brian C. Benicewicz
wiley   +1 more source

Teledyne Energy Systems, Inc., Proton Exchange Member (PEM) Fuel Cell Engineering Model Powerplant. Test Report: Initial Benchmark Tests in the Original Orientation [PDF]

open access: yes
Proton Exchange Membrane (PEM) fuel cell technology is the leading candidate to replace the alkaline fuel cell technology, currently used on the Shuttle, for future space missions.
Loyselle, Patricia, Prokopius, Kevin
core   +1 more source

Three-dimensional simulation of a new cooling strategy for proton exchange membrane fuel cell stack using a non-isothermal multiphase model [PDF]

open access: yes, 2019
In this study, a new cooling strategy for a proton exchange membrane (PEM) fuel cell stack is investigated using a three-dimensional (3D) multiphase non-isothermal model.
Jiao, K, Wang, Y, Yuan, H, Zhang, G
core  

Redox‐Mediated Aluminum–Air Fuel Cells With Suppressed Hydrogen Evolution for Durable Power Generation

open access: yesAdvanced Energy Materials, EarlyView.
The redox‐mediated aluminum–air fuel cell (RM‐AAFC) integrates a soluble redox mediator, 7,8‐dihydroxy‐2‐phenazine sulfonic acid (DHPS), to facilitate the oxidation of aluminum and inhibit hydrogen evolution reaction (HER) through competitive reactions between DHPS reduction and HER on the Al surface.
Yuxi Song   +10 more
wiley   +1 more source

Numerical Optimization of Flow Field Pattern by Mass Transfer and Electrochemical Reaction Characteristics in Proton Exchange Membrane Fuel Cells

open access: yesInternational Journal of Electrochemical Science, 2013
Flow field pattern affects the mass transfer and electrochemical reaction characteristics which influence the distribution of reacting gases as well as the performance of proton exchange membrane fuel cell.
Bonghwan Lee, Kiwon Park, Hyung-Man Kim
doaj   +1 more source

Home - About - Disclaimer - Privacy