Results 61 to 70 of about 51,586 (326)

One‐Size‐Fits‐All: A Universal Binding Site for Single‐Layer Metal Cluster Self‐Assembly

open access: yesAdvanced Science, EarlyView.
A universal strategy enables the formation of single‐layer metal clusters (SLMC) across 21 elements by harnessing vacancy defects as binding sites. Crucially, synthesis occurs without reactive species, preventing site passivation and ensuring strong metal–surface bonding.
Emerson C. Kohlrausch   +16 more
wiley   +1 more source

Nature monument "Borački krš": A geoheritage site in Serbia [PDF]

open access: yesZaštita prirode
Borački krš is a nature monument of geological and geomorphological character. The eruptive complex of Borač represents one of the most interesting and once extremely active Tertiary volcanic areas in Serbia, which has in terms of volcanic activities ...
Timotić Mirjana, Belij Srđan
doaj   +1 more source

Mantle Melting and Intraplate Volcanism Due to Self‐Buoyant Hydrous Upwellings From the Stagnant Slab That Are Conveyed by Small‐Scale Convection

open access: yesGeochemistry Geophysics Geosystems, 2019
The mechanisms sustaining basaltic continental intraplate volcanism remain controversial. Continental intraplate volcanism is often geographically associated with slab stagnation in the mantle transition zone (MTZ), for example, in eastern Asia, central ...
Xiaogang Long   +3 more
semanticscholar   +1 more source

Interior Morphology and Pore Structure in High Surface Area Carbon Catalyst Supports

open access: yesAdvanced Energy Materials, EarlyView.
The interior structure of high surface area carbon supports for proton exchange membrane fuel cells is a major yet poorly characterized factor influencing performance and durability. Using full‐range electron tomography, pores and pathways within the supports are visualized in 3D.
Robin Girod, Vasiliki Tileli
wiley   +1 more source

Degradation of NiMo Catalyst Under Intermittent Operation of Anion Exchange Membrane Water Electrolyzer and its Mitigation by Carbon Encapsulation

open access: yesAdvanced Energy Materials, EarlyView.
Herein, by employing a reference electrode, the durability of anion exchange membrane water electrolyzer (AEMWE) under intermittent condition is demonstrated to be governed by the stability of the cathode catalyst. By encapsulating NiMo catalyst with carbon shells, the oxidation‐induced irreversible transformation to inactive hydroxide is prevented ...
Sun Seo Jeon   +13 more
wiley   +1 more source

Distribution and morphology of present-day glaciers on Kamchatka

open access: yesЛëд и снег, 2020
The current glacierization of the Kamchatka Peninsula includes 643 glaciers with a total area 769.48±48.34 km2. A variety of combinations of macro-relief factors, climate and volcanism caused irregular distribution of glaciers on the Peninsula, as well ...
A. Ya. Muraviev
doaj   +1 more source

Timing and Provenance of Volcanic Fluxes Around the Permian‐Triassic Boundary Mass Extinction in South China: U‐Pb Zircon Geochronology, Volcanic Ash Geochemistry and Mercury Isotopes

open access: yesGeochemistry, Geophysics, Geosystems, 2023
Anomalous mercury (Hg) contents recorded near the Permian‐Triassic boundary (PTB) are often linked to Siberian Traps Large Igneous Province (STLIP) volcanism and the Permian‐Triassic boundary mass extinction (PTBME).
Oluwaseun Edward   +7 more
doaj   +1 more source

Self‐Standing Fluorine‐Free Anode Microporous Layers Enabling Improved Hot and Dry Operation of Fully Hydrocarbon Proton‐Exchange Membrane Fuel Cells

open access: yesAdvanced Energy and Sustainability Research, EarlyView.
Fluorine‐free self‐standing anode microporous layers are fabricated and optimized for hydrocarbon catalyst‐coated membranes. The effects of carbon black, graphite, and acrylic binder in the microporous layer composition, on wetting behavior, permeability, electrical resistance, and electrochemical performance are investigated.
Koray Yildirim   +3 more
wiley   +1 more source

Synthesis of Pt Carbon Aerogel Electrocatalysts with Multiscale Porosity Derived from Cellulose and Chitosan Biopolymer Aerogels via Supercritical Deposition for Hydrogen Evolution Reaction

open access: yesAdvanced Energy and Sustainability Research, EarlyView.
The synthesis of platinumcarbon aerogel electrocatalysts with multiscale porosity derived from biopolymer aerogels via supercritical deposition is presented. The electrocatalysts demonstrate similar overpotentials to commercial alternatives with significantly higher platinum loadings, while exhibiting superior stability due to enhanced porosity ...
Ala Alsuhile   +6 more
wiley   +1 more source

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