Results 171 to 180 of about 184,587 (385)

Efficient and Scalable Electrochemical Energy Systems via Peroxide‐Mediated Redox Chemistry

open access: yesAdvanced Science, EarlyView.
We outline reaction mechanisms and catalyst strategies that enable efficient, reversible O2 ⇌ HO2– chemistry. Peroxide‐mediated pathways offer an alternative to the conventional 4e–/O2 route, improving round‐trip energy efficiency in rechargeable zinc–air batteries and supporting scalable hydrogen production without external storage or transportation ...
Alagar Raja Kottaichamy   +3 more
wiley   +1 more source

Durable Thin‐Film Porous Transport Electrodes for High Current Density PEM Water Electrolysis

open access: yesAdvanced Science, EarlyView.
Water electrolysis using porous transport electrodes with sputter‐deposited, ionomer‐free thin films of rutile IrO2 catalyst suppresses Ir dissolution by >10x over other forms of IrOx. The rutile IrO2 catalyst prepared by this readily scalable electrode synthesis method provides stable cell operation at 3 A cm−2 while using low Ir loading (0.4 mg Ir cm−
James L. Young   +18 more
wiley   +1 more source

Cation Substitution in High‐Entropy Layered Double Hydroxide Driving D‐Band Center Tuning for Oxygen Evolution Reaction

open access: yesAdvanced Science, EarlyView.
The d‐band center position of layered double hydroxide is adjusted via multication insertion in the octahedral site. The optimal position of the d‐band, near the Fermi level, enhances OER performance through optimal OH− adsorption kinetics, resulting in a 55% reduction in overpotential compared to the native catalyst.
Pinnan Li   +4 more
wiley   +1 more source

Exploring Metal-Free Ionic Covalent Organic Framework Nanosheets as Efficient Oer Electrocatalysts Via Cationic-Π Interactions

open access: green, 2023
Rui Wang   +9 more
openalex   +1 more source

*OH Adsorption‐Mediated Electrochemical Oxidation of 5‐Hydroxymethylfurfural to Selective 2,5‐Furandicarboxylic Acid at pH 12

open access: yesAdvanced Science, EarlyView.
Under the weakly alkaline condition, at pH 12, the *OH adsorption–mediated mechanism of direct aldehyde oxidation is demonstrated to complete HMF oxidation to FDCA, obtaining >95% selectivity and yield. In OH−‐deficient media, high FDCA selectivity is achieved on the CuO/NiOOH interface, a synergistic active site, where Cu enhances *OH utilization, and
Eunchong Lee   +8 more
wiley   +1 more source

Dynamic Stability in Intermittent Seawater Electrolysis Via Frustrated Lewis Pair Engineering

open access: yesAdvanced Science, EarlyView.
The Frustrated Lewis Pair concept guides the design strategy of Cr‐NiCoPv@NF to address dual limitations in intermittent alkaline seawater electrolysis. Abstract Alkaline seawater electrolysis powered by intermittent renewable energy offers a promising pathway for sustainable hydrogen production, yet faces critical challenges in proton supply dynamics ...
Peilin Shen   +8 more
wiley   +1 more source

Bioinspired Oxygen‑Enriched Nanodiamonds as Electrolytic Erythrocyte Mimics for Dendrite‑Free Zinc‑Ion Batteries

open access: yesAdvanced Science, EarlyView.
Inspired by the cyclic transport of oxygen from the lungs (high‑O2 region) to tissues (low‑O2 region), oxygen‑enriched nanodiamond (OND) is introduced into aqueous zinc‑ion batteries as “electrolyte erythrocytes.” These OND repeatedly shuttle Zn2+ from high‑ to low‑concentration regions, dramatically flattening the Zn2+ gradient and thereby effectively
Wenhao Ding   +11 more
wiley   +1 more source

Hierarchical Embedded Sphere Model: An Interpretable ML‐Guided Multiscale Descriptor Engineering Decodes OER Activity on TM@MO2 Catalysts

open access: yesAdvanced Science, EarlyView.
Hierarchical Embedded Sphere Model combines DFT and interpretable machine learning to decode catalytic activity on TM‐doped MO2. It disentangles global electronic, active‐site, and local coordination effects, revealing two activation mechanisms: dopant‐driven (Rh@MO2) and coordination‐mediated (Fe@ZrO2).
Ziyuan Li   +5 more
wiley   +1 more source

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