Results 31 to 40 of about 39,583 (267)

DESCOPERIRI MONETARE MEDIEVALE DIN CAMPANIA ARHEOLOGICĂ 2020 DE LA REMETEA MARE (JUD. TIMIȘ) – PUNCTUL GOMILA LUI GABOR

open access: yesAnalele Banatului. Arheologie-Istorie, 2022
During preventive archaeological excavations in the area of Remetea Mare commune (Timiș County) in 2020, several medieval vestiges came to light, including nine coins (all silver alloy): Banat of Severin - Nicolae Redwitz (1429-1435?), 1 coin (coin no. 1)
Raoul Șeptilici   +2 more
doaj  

Understanding and Optimizing Li Substitution in P2‐Type Sodium Layered Oxides for Sodium‐Ion Batteries

open access: yesAdvanced Functional Materials, EarlyView.
This work explores Li‐substituted P2 layered oxides for Na‐ion batteries by crystallographic and electrochemical studies. The effect of lithium on superstructure orderings, on phase transitions during synthesis and electrochemical cycling and on the interplay of O‐ versus TM‐redox is revealed via various advanced techniques, including semi‐simultaneous 
Mingfeng Xu   +5 more
wiley   +1 more source

Enhancing Low‐Temperature Performance of Sodium‐Ion Batteries via Anion‐Solvent Interactions

open access: yesAdvanced Functional Materials, EarlyView.
DOL is introduced into electrolytes as a co‐solvent, increasing slat solubility, ion conductivity, and the de‐solvent process, and forming an anion‐rich solvent shell due to its high interaction with anion. With the above virtues, the batteries using this electrolyte exhibit excellent cycling stability at low temperatures. Abstract Sodium‐ion batteries
Cheng Zheng   +7 more
wiley   +1 more source

The Youthful Heracles-Melqart in Tyre. Choosing a Visual Language for a Phoenician God in the Hellenistic Period

open access: yesMythos, 2022
The Hellenistic silver coins of Tyre were widely used and accepted in the Southern Levant. They depicted the head of the youthful and beefy Heracles-Melqart on the obverse.
Achim Lichtenberger
doaj   +1 more source

Ag and Sn Implications in 3-Polker Coins Forgeries Evidenced by Nondestructive Methods [PDF]

open access: gold, 2023
Ioan Petean   +6 more
openalex   +1 more source

Unlocking Ultra‐Long Cycle Stability of Li Metal Electrode by Separators Modified by Porous Red Phosphorus Nanosheets

open access: yesAdvanced Functional Materials, EarlyView.
Coating the standard polypropylene separator with a porous red phosphorous nanosheet greatly improves cycling performance in Li electrode cells. The phosphorus‐based surface chemistry deactivates electrolyte solvent decomposition and enhances the cleavage of F‐containing salt, resulting in an inorganic‐dominated electrolyte interphase (SEI) composition
Jiangpeng Wang   +9 more
wiley   +1 more source

Bimetallic Nanoparticles as Cocatalysts for Photocatalytic Hydrogen Production

open access: yesAdvanced Functional Materials, EarlyView.
Recent developments have introduced bimetallic nanoparticles as effective cocatalysts for photocatalytic systems. This review explores the rapidly expanding research on bimetallic cocatalysts for photocatalytic production of hydrogen, emphasizing the creation of carrier‐selective contacts, localized surface plasmon resonance effects, methodologies for ...
Yufen Chen   +4 more
wiley   +1 more source

Boosting the Energy Density of “Anode‐Free” Lithium Metal Batteries via Electrospun Polymeric Scaffolds

open access: yesAdvanced Functional Materials, EarlyView.
While host structures are known to enhance the reversibility and safety of lithium metal deposition, their additional volume and weight often decrease the battery's energy density and specific energy. By combining a lightweight and porous scaffold of electrospun polymer with a thinner separator, this article demonstrates a simultaneous improvement of ...
Lennart Wichmann   +6 more
wiley   +1 more source

Encapsulating Zinc Powder in MXene/Silk Scaffolds with Zincophilic‐Hydrophobic Polymer for Flexible Zinc‐Ion Batteries

open access: yesAdvanced Functional Materials, EarlyView.
This work develops flexible zinc‐ion batteries (FZIBs) using a zincophilic/hydrophobic polymer (thermoplastic polycarbonate‐based polyurethane, TPCU) to protect Zn powder anodes and MXene/Silk (MXS) as flexible current collectors. The designed TPCU‐ZnP@MXS structure enables uniform Zn deposition, yielding dendrite‐free anodes with stable cycling ...
Zixuan Yang   +8 more
wiley   +1 more source

Ancient coins in the classroom: using the OCRE imperial coin database to support Year 12 students’ learning of Roman imperial image

open access: yesThe Journal of Classics Teaching
This study concerns how the Online Coins of the Roman Empire (OCRE) database of imperial coins can support Year 12 students to learn about Roman imperial image on coins for their Classical Civilisation Imperial Image paper.
Giles Thomas Penman
doaj   +1 more source

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