Results 51 to 60 of about 470,088 (355)

Recent Advances and Challenges of Nanomaterials-Based Hydrogen Sensors

open access: yesMicromachines, 2021
Safety is a crucial issue in hydrogen energy applications due to the unique properties of hydrogen. Accordingly, a suitable hydrogen sensor for leakage detection must have at least high sensitivity and selectivity, rapid response/recovery, low power ...
Bei Wang   +4 more
doaj   +1 more source

Tailored Hierarchical Porous Copper Architectures via Three Dimensional Printing and Pressure‐less Sintering for Next‐Generation Lithium‐Metal Batteries

open access: yesAdvanced Engineering Materials, EarlyView.
A hierarchical porous copper current collector is fabricated via three‐dimensional printing combined with pressureless sintering to stabilize lithium metal anodes. The interconnected architecture lowers local current density, guides uniform Li deposition within pores, and suppresses dendrite growth.
Alok Kumar Mishra, Mukul Shukla
wiley   +1 more source

A Computational Fluid Dynamics Analysis of Hydrogen Leakage and Nitrogen Purging of a Solid Oxide Fuel Cell Stack

open access: yesHydrogen, 2023
A computational study of the nitrogen purging of a solid oxide fuel cell stack enclosed in a hot box is presented. The stack operates on ammonia as a fuel, and in the case of a hydrogen leakage, the entire compartment is immediately purged with nitrogen ...
Rasmus Dockweiler Sørensen   +1 more
doaj   +1 more source

A mathematical framework for modelling and evaluating natural gas pipeline networks under hydrogen injection [PDF]

open access: yes, 2008
This article presents the framework of a mathematical formulation for modelling and evaluating natural gas pipeline networks under hydrogen injection. The model development is based on gas transport through pipelines and compressors which compensate for ...
Azzaro-Pantel, Catherine   +3 more
core   +3 more sources

Electrochemical Behavior of Flame‐Sprayed Sc‐Doped AlCoCrFeMo High‐Entropy Alloy Coatings in 3.5% Sodium Chloride Solution

open access: yesAdvanced Engineering Materials, EarlyView.
Scandium (Sc)‐doped AlCoCrFeMo HEA coatings are fabricated via flame spraying with 0.1, 0.3, and 0.5 wt% Sc additions. Among these, the HEA‐Sc0.3 coating exhibits the highest corrosion resistance, indicated by a more positive corrosion potential and lower current density.
Pankaj Kumar   +7 more
wiley   +1 more source

Accident Analysis Modeling and Case Study of Hydrogen Refueling Station Using Root Cause Analysis (RCA)

open access: yesSafety
As the global transition to carbon neutrality accelerates, hydrogen energy has emerged as a key alternative to fossil fuels due to its potential to reduce carbon emissions.
Il Jae Lee, A Ran Lee, Kyung-Sun Lee
doaj   +1 more source

Communicating leakage risk in the hydrogen economy: Lessons already learned from geoenergy industries

open access: yesFrontiers in Energy Research, 2022
Hydrogen is set to play a part in delivering a net zero emissions future globally. However, previous research finds that risk perception issues are particularly challenging for emerging and potentially unfamiliar technologies.
Linda Stalker   +3 more
doaj   +1 more source

Biodegradable and Recyclable Luminescent Mixed‐Matrix‐Membranes, Hydrogels, and Cryogels based on Nanoscale Metal‐Organic Frameworks and Biopolymers

open access: yesAdvanced Functional Materials, EarlyView.
The study presents biodegradable and recyclable mixed‐matrix membranes (MMMs), hydrogels, and cryogels using luminescent nanoscale metal‐organic frameworks (nMOFs) and biopolymers. These bio‐nMOF‐MMMs combine europium‐based nMOFs as probes for the status of the materials with the biopolymers agar and gelatine and present alternatives to conventional ...
Moritz Maxeiner   +4 more
wiley   +1 more source

Study on the synergistic failure of hydrogen embrittlement and corrosion in high-pressure hydrogen-blended natural gas pipelines

open access: yesJournal of Materials Research and Technology
Blended hydrogen into natural gas pipelines enables efficient long-distance hydrogen transport. However, the synergistic effects of hydrogen embrittlement and corrosion in high-pressure environments remain unclear. Therefore, hydrogen blending ratios and
Jialong Wang   +10 more
doaj   +1 more source

Optical Characterisation of RF Sputter Coated Palladium Thin Films for Hydrogen Sensing [PDF]

open access: yes, 2011
We investigate the optical properties of Pd thin films of the thickness 20-100nm deposited on Si wafer via RF sputter coating. The Pd samples are characterised using white light interfermometry for thickness and ellipsometry for refractive index.
Barton, James   +5 more
core   +1 more source

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