Results 261 to 270 of about 12,068,996 (359)

Fullerene C70‐Encapsulated Tetrathiafulvalene‐Co Porphyrin Covalent Organic Framework: Driving Multistep Charge Transfer to Boost CO2 Photoreduction

open access: yesAdvanced Science, EarlyView.
The encapsulation of C70 into COF has improved the efficiency of photocatalytic CO2 reduction significantly. The introduction of C70 drives multistep charge transfer and forms a long‐lived charge‐separated state. It also thermodynamically lowers the energy barrier of the rate‐determining step.
Ying Jiang   +8 more
wiley   +1 more source

Diffusion Characteristics of Ru and Oxygen Vacancies in Ta2O5 for Resistive Random Access Memory Devices: A Density Functional Theory Investigation

open access: yesAdvanced Electronic Materials, EarlyView.
Atomistic analysis of ruthenium (Ru) and oxygen vacancy (OV) diffusion in Ta₂O₅‐based memristors is performed. DFT calculations demonstrate interstitial Ru in Ta₂O₅ has lower diffusion barriers and formation energies than OVs, enhancing mobility and stability.
Md. Sherajul Islam   +3 more
wiley   +1 more source

Iron Single Atom Catalysts for Electrochemical Ammonia Synthesis: Toward Carbon Free Hydrogen Storage

open access: yesAdvanced Energy Materials, EarlyView.
This review explores using iron‐based single‐atom catalysts for sustainable electrochemical conversion of nitrogen and nitrate to ammonia production. The synthesis, characterization, efficiency, advancements, and future directions of Fe‐based single‐atom catalysts are discussed in detail.
Radhika Nittoor‐Veedu   +2 more
wiley   +1 more source

Impact of Transition Metals and Electrocatalyst Layer Thickness on the Pt‐Based Cathodes of Proton Exchange Membrane Fuel Cells – Do Multimetallic Electrocatalysts Necessarily Yield an Improved Performance?

open access: yesAdvanced Energy Materials, EarlyView.
Nonnoble transition‐metals (TMs) in PtCuNi/C catalysts have a dual influence in proton‐exchange membrane fuel cell cathode catalyst layer. While TMs act as a “sacrificial component” of PtCuNi/C, inhibiting Pt dissolution from the PtMx nanoparticles bearing the active sites, they promote the formation of separate catalysts and ionomer domains in the ...
Ricardo Sgarbi   +16 more
wiley   +1 more source

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