Results 111 to 120 of about 32,735 (279)

Comprehensive Analysis of the Degradation Phenomena of Proton Exchange Membrane Water Electrolyzers with Iridium on Antimony Tin Oxide Anodes

ENERGY &ENVIRONMENTAL MATERIALS, EarlyView.
This study examines the structural and chemical evolution of low‐loaded Ir/ATO anodes during PEM water electrolysis under realistic conditions. Iridium dissolution is largely suppressed. In the early stages, both ionomer and support degradation are detected. Morphological reorganization occurs at the interface between the anode catalyst layer (ACL) and
Sambal Shashank Ambu, Nikolai Utsch, Tobias Morawietz, Maria Retuerto, Sergio Rojas, Oleg Usoltsev, Miriam Goll, Daniel García Sanchez, Andreas Glüsen, Aldo Saul Gago, Seyed Schwan Hosseiny, Kaspar Andreas Friedrich   +11 more
wiley   +1 more source

Free spectral range electrical tuning of a high quality on-chip microcavity

, 2018
Reconfigurable photonic circuits have applications ranging from next-generation computer architectures to quantum networks, coherent radar and optical metamaterials.
Baker, Christopher G., Bekker, Christiaan, Bowen, Warwick P., Cheng, Han-Hao, Kalra, Rachpon, Li, Bei-Bei, Prakash, Varun   +6 more
core   +1 more source

In Situ Bilayer Interphase Enables Air‐Stable Li Metal Anode for Long‐Term Li‐Air Batteries

ENERGY &ENVIRONMENTAL MATERIALS, EarlyView.
An in situ formed bilayer SEI—featuring an Ag/LiF‐enriched inner backbone and a CF3‐dominated hydrophobic outer shell—enables fast/uniform Li+ transport and exceptional moisture‐air stability for Li metal. Lithium metal is an attractive anode for next‐generation high‐energy batteries, but its practical use is plagued by dendrite growth and parasitic ...
Xiaoxuan Li, Jiafeng Li, Ruixiao Zhu, Yutong Zhao, Longwei Yin   +4 more
wiley   +1 more source

High-precision measurement of trace-level Nb, Sn, Ta, and W in rutile using electron probe microanalysis

Solid Earth Sciences
The composition of Nb, Sn, Ta, and W in rutile can serve as a highly sensitive indicator for the mineralization of these elements. This information could also be utilized to discriminate different stages of ore deposition or distinct types of deposits ...
Peng-Li He, Xiao-Long Huang, Le Zhang
doaj   +1 more source

Enhanced Ionic Conductivity and Moisture Stability of Zr‐Based Halide Solid Electrolytes via Ta5+ Doping for All‐Solid‐State Batteries

ENERGY &ENVIRONMENTAL MATERIALS, EarlyView.
The high‐valence Ta5+‐substituted LZC (LZT0.3C) demonstrates high ionic conductivity, excellent compressibility, and impressive moisture stability, contributing to the long‐term cycling durability of ASSLBs. Recently developed halide solid‐state electrolytes (SSEs) have become promising alternatives for the next generation inorganic SSEs, primarily due
Jin Hu, Yuhan Ma, Yihao Cheng, Chunsheng Shi, Biao Chen, Liying Ma, Jianli Kang, Fang He, Naiqin Zhao, Chunnian He   +9 more
wiley   +1 more source

In Situ Analysis of Gut Residue of Corophium Volutator (Pallas) by Electron Probe Microanalysis after Exposure to Barytes Spiked Sediments [PDF]

Iranian Journal of Chemistry & Chemical Engineering, 2002
Corophium volutator (Pallas) has been recommended by the paris Commission as one of the standard species for testing chemical used in offshore oil and gas exploration/production.
Tariq M. Ansari, Iain L. Marr, Alison M. Coats   +2 more
doaj  

Fast Reduction of Nitroalkenes Into Nitroalkanes Under Continuous‐Flow Chemical Conditions

European Journal of Organic Chemistry, EarlyView.
Flow chemical synthesis was employed for the reduction of nitroalkenes to the corresponding nitroalkanes using sodium borohydride as the reducing agent. The reaction proceeds in only 150 s, affording products from good‐to‐excellent yields (61–96%). Herein, we describe an efficient and rapid continuous‐flow reduction of nitroalkenes to nitroalkanes. The
Iqra Munir, Gianmarco Simonelli, Marino Petrini, Alessandro Palmieri   +3 more
wiley   +1 more source

Activation of Aryl Halides by Triplet–Triplet Annihilation Upconversion Enabling Coupling Processes Under an Open‐to‐Air Environment

European Journal of Organic Chemistry, EarlyView.
Triplet–triplet annihilation upconversion (TTA‐UC) performed inside supramolecular viscoelastic gels enables efficient CC and C–heteroatom coupling reactions under green LED irradiation in open‐air conditions. The gel network restricts oxygen diffusion, preserves triplet states, and allows aryl halide activation through upconverted excited states ...
Daniel Álvarez‐Gutiérrez, Paola Domínguez Domínguez, M. Consuelo Jiménez, David Díaz Díaz, Raúl Pérez‐Ruiz   +4 more
wiley   +1 more source

A Reproducible SEM Surface Imaging Protocol for Monitoring Microstructural Changes During Gas–Rock Interactions

Greenhouse Gases: Science and Technology, EarlyView.
ABSTRACT Reliable characterization of mineralogical and textural changes in rock samples is essential for understanding fluid–rock interactions, particularly in experimental studies simulating subsurface conditions. This study presents a reproducible protocol for scanning electron microscopy (SEM) analysis of rock surfaces before and after exposure to ...
Berta Ordóñez‐Casado, Timea Kovács, Sara Roces, Edgar Berrezueta   +3 more
wiley   +1 more source

Assessment of Gold‐Mediated Male Reproductive Dysfunction in Male WISTAR Rats Through Sperm Analysis and Testosterone Measurement

Journal of Applied Toxicology, EarlyView.
ABSTRACT Gold has been used for centuries in both ornamental and medicinal contexts. More recently, gold compounds, containing ions or nanoparticles, have attracted attention for their anti‐inflammatory, anticancer, and diagnostic applications. Therefore, concerns about systemic toxicity and biodistribution have prompted investigations into the ...
Samira Maghraoui, Adrian Florea, Leila Tekaya   +2 more
wiley   +1 more source