Results 241 to 250 of about 7,367,624 (346)

Softening of Vibrational Modes and Anharmonicity Induced Thermal Conductivity Reduction in a‐Si:H at High Temperatures

open access: yesAdvanced Electronic Materials, EarlyView.
This study developed a neuroevolution machine learning potential of both a‐Si:H and a‐Si systems, and revealed that the softening of vibrational modes and enhanced anharmonicity contribute to the reduction in thermal conductivity with increasing temperature and hydrogen concentration.
Zhuo Chen   +8 more
wiley   +1 more source

Sulfonated Polystyrene/Polybenzimidazole Bilayer Membranes for Vanadium Redox Flow Batteries

open access: yesAdvanced Energy Materials, EarlyView.
PBI‐coated sulfonated polystyrene membranes are prepared, and the performance of the various possible assemblies of two such membranes is tested. A 52 µm thick PSSP assembly can be fabricated with a materials cost of just 1.84 USD m−2, and shows an energy efficiency of 89.7% at 80 mA cm−2.
Muhammad Mara Ikhsan   +5 more
wiley   +1 more source

Sulfonated para‐Polybenzimidazole Membranes for Use in Vanadium Redox Flow Batteries

open access: yesAdvanced Energy Materials, EarlyView.
Dense sulfonated para‐PBI membranes (MS‐PBI) are tested in the VRFB. The conductivity is 10 times lower than reported for MS‐PBI gel membranes, but 10 times higher than that of meta‐PBI. The influence of membrane preparation process, thickness, and operating temperature on the VRFB performance is investigated.
Trung Tuyen Bui   +14 more
wiley   +1 more source

Short-term effects of extreme air pollutant concentrations on coronary heart disease hospitalization in Henan province: a time-stratified case-crossover study. [PDF]

open access: yesFront Cardiovasc Med
Liu S   +16 more
europepmc   +1 more source

Polyphenylene‐Based Anion Exchange Membranes with Robust Hydrophobic Components Designed for High‐Performance and Durable Anion Exchange Membrane Water Electrolyzers Using Non‐PGM Anode Catalysts

open access: yesAdvanced Energy Materials, EarlyView.
Terphenyl groups bearing meta‐phenylene and trifluoromethyl substituents as hydrophobic components are incorporated into a quaternized polyphenylene‐based backbone to produce AEMs. The fabricated thin membranes exhibit high ion conductivity, alkaline stability, and mechanical robustness.
Fanghua Liu   +10 more
wiley   +1 more source

Cardiovascular Emergency Hospitalization Risks of PM<sub>2.5</sub> Transition Metals: A Time-Stratified Case-Crossover Study. [PDF]

open access: yesEnviron Health (Wash)
Wang L   +10 more
europepmc   +1 more source

Fast‐Charging Lithium–Sulfur Batteries

open access: yesAdvanced Energy Materials, EarlyView.
This review explores strategies to overcome fast‐charging challenges in lithium‐sulfur batteries (LSBs). It covers key techniques to address LiPS shuttling, sluggish kinetics, and dendrite formation. The crucial role of battery components, catalysts, and electrode/separator modifications is analyzed.
Jakob Offermann   +6 more
wiley   +1 more source

PM2.5 and hospitalizations through the emergency department in people with disabilities: a nationwide case-crossover study in South Korea. [PDF]

open access: yesLancet Reg Health West Pac
Park J   +10 more
europepmc   +1 more source

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