Results 81 to 90 of about 2,978 (240)
Acoustic‐driven surface cleaning with millimeter‐sized bubbles at translational resonance
Droplet, EarlyView.Time‐lapse visualization comparing bubble trajectories. The top panel (0 Hz) shows a bubble's linear path under no acoustic forcing, while the bottom panel (50 Hz) demonstrates the oscillatory motion induced by acoustic waves at a resonance mode. This mechanism holds promising potential for applications such as surface cleaning.
Yan Jun Lin +2 more
wiley +1 more source
Achievement of Transition Metal Chalcogenides/Oxides in Hydrogen Production by Seawater Electrolysis
EcoEnergy, EarlyView.Transition metal chalcogenides (TMCs)/oxides have shown great application potential in seawater splitting for hydrogen generation due to their adjustable electronic properties, abundant active sites, and excellent catalytic performance. ABSTRACT Under the impetus of global “dual carbon” goals, green hydrogen has become a key component of the future ...
Xiaohui Du, Xinyu Li, Jianna Li, Tao Sun
wiley +1 more source
Results in Surfaces and InterfacesFuel cells use proton exchange membranes (PEMs) to transform chemical energy into electricity. PEMs are selective barriers that permeates protons, obstructing gases and other species like electrons.
Fayaz Ahmad Doobi, Fasil Qayoom Mir
doaj +1 more source
Experimental study and simulations of hydrogen cooling effectiveness for aviation PEM fuel cells. [PDF]
Sci Rep, 2023 Kösters TL +4 more
europepmc +1 more source
Water Electrolysis Technologies for Extraterrestrial Water Resource Conversion
EcoEnergy, EarlyView.This paper reviews four water electrolysis technologies for extraterrestrial water conversion: alkaline water electrolysis, proton exchange membrane water electrolysis, solid oxide water electrolysis, and anion exchange membrane water electrolysis. It elaborates on their mechanisms, components, and integration, highlighting challenges such as water ...
Yawen Jiang +6 more
wiley +1 more source
Gazi Üniversitesi Fen Bilimleri DergisiAn eco-friendly and renewable energy source, Polymer Electrolyte Membrane (PEM) fuel cells offer various advantages such as stability and efficiency. The present study aims to control output voltage of PEM fed basic series positive super voltage lift luo
Ahmet Gani , İlknur Uçar
doaj +1 more source
Study on water and oxygen transfer characteristics of HT-PEM fuel cells. [PDF]
Heliyon, 2023 He H, Peng H, Li G.
europepmc +1 more source
Unveiling Bubble Dynamics of Proton Exchange Membrane Water Electrolysis at Elevated Temperatures
EcoEnergy, EarlyView.This work directly visualizes bubble dynamics in a proton‐exchange membrane water electrolyzer operated at temperatures up to 120°C and pressures up to 100 bar. Elevated‐temperature operation beyond the atmospheric boiling point markedly reduces bubble coverage, leading to lower bubble‐related voltage losses and enhancing cell performance.
Andre Chambers +4 more
wiley +1 more source
An open-source zero-gradient cell hardware to improve and accelerate durability testing of PEM fuel cells. [PDF]
HardwareX, 2023 Colombo E +3 more
europepmc +1 more source
ENERGY &ENVIRONMENTAL MATERIALS, EarlyView.A porous anion exchange layer (AEL) is implemented in a forward‐biased bipolar membrane CO2 electrolyzer to suppress carbonate crossover, support CO2 regeneration and maintain cathode alkalinity. Two fabrication strategies are compared—deposition on a silver gas diffusion electrode (GDE) or on the CEM—showing that a porous AEL‐coated GDE provides the ...
Henning Lorenz +3 more
wiley +1 more source