Results 131 to 140 of about 155,593 (300)

Research of heat conductivity of quartz material

Қарағанды университетінің хабаршысы. Физика сериясы
In the article the results of a study of heat conductivity and thermal resistance of quartz-containing materials were presented. The object of the study was a quartz mineral from the Aktas deposit, located in the Ulytau district of the Karaganda region.
A.K. Хасенов, Г.A. Булкаировa, Б.Р. Нусупбеков, E.Р. Шрагер, Д.Ж. Карабековa, M.М. Болатбекова, Е.A. Жолдасбек   +6 more
doaj   +1 more source

Water Permeates and Plasticizes Amorphous Carbon Dots: Unraveling the Inner Accessibility of the Nanoparticles by Glass Transition Studies

Advanced Materials, EarlyView.
The water permeability of amorphous carbon dots (CDs) is demonstrated by investigating their plasticization. Novel polyamide‐based and amorphous nanoparticles are synthesized by controlling their inner packing density. Water plasticization is evidenced by the decrease of the CDs glass transition temperature with increasing the hydration degree.
Elisa Sturabotti, Valerio Di Lisio, Lucia Cardo, Alessandro Camilli, Estela Moretón Alfonsín, Daniele Cangialosi, Amaia Iturrospe Ibarra, Arantxa Arbe, Maurizio Prato   +8 more
wiley   +1 more source

Studying the role of fine materials characteristics on the packing density and rheological properties of blended cement pastes

Applied Rheology
This study explores the use of ten different fine materials to partially substitute cement, aiming to reduce greenhouse gas emissions from cement production.
Ibrahim Reham Moharem, Ahmad Seleem S. E., Ghazal Ahmed I., Al-kroom Hussein, Elrahman Mohamed Abd   +4 more
doaj   +1 more source

Revealing How Acid Sites Enhance the Electrocatalytic Glycerol Oxidation Performance on Pt Loaded Zeolite‐Carbon Composite Materials

Advanced Materials, EarlyView.
In the work reported herein, the catalytic effects of acid sites on electrocatalytic glycerol oxidation reaction are investigated by using a novel catalytic material system that integrates Pt metal sites with acidic Al sites. Abstract The catalytic role and function of acid sites in solid acid catalysts, such as zeolites, are well understood in the ...
Ju Ye Kim, Sunjae No, Jinwoo Hwang, Mi Yoo, Hakju Lee, Youngbi Kim, Youngmin Kim, Yong Tae Kim, Jeong‐Chul Kim, Jeong Woo Han, Kyoungsoo Kim, Hyung Ju Kim   +11 more
wiley   +1 more source

High Light Utilization and Color Rendering in Vacuum‐Deposited Semitransparent Perovskite Solar Cells

Advanced Materials, EarlyView.
In this work, low bandgap (≈1.55 eV) semitransparent perovskite solar cells (ST‐PSCs) having thin (thickness < ≈100 nm) perovskite layers and transparent conductive oxide‐based rear electrodes are fabricated using vacuum‐deposition methods. Two different ST‐PSCs demonstrated a high light utilization efficiency value of 4.2 (PCE: 9.26% and AVT: 45.3 ...
Abhyuday Paliwal, Manuel Romero, Lennart van den Hengel, Nathan Rodkey, Kassio P. S. Zanoni, Gabriel Lozano, Cristina Roldán‐Carmona, Michele Sessolo, Hernán Míguez, Henk J. Bolink   +9 more
wiley   +1 more source

Continuous catalytic decomposition of methane [PDF]

Continuous catalytic decomposition of methane and application to space life support ...
Clifford, J. E., Hillenbrand, L., Kim, B. C., Zupan, J.   +3 more
core   +1 more source

Polyimide‐Linked Hexaazatriphenylene‐Based Porous Organic Polymer with Multiple Redox‐Active Sites as a High‐Capacity Organic Cathode for Lithium‐Ion Batteries

Advanced Materials, EarlyView.
A high‐capacity polyimide‐linked porous organic polymer (HAT‐PTO) incorporating numerous redox‐active centers is synthesized via a hydrothermal reaction, delivering a high theoretical capacity of 484 mAh g−1. In situ hybridization with carboxyl‐functionalized multiwalled carbon nanotubes enhances conductivity and stability, achieving 397 mAh g−1 at C ...
Arindam Mal, Jonathan Caroni, Asia Patriarchi, Olivera Luzanin, Rafael Ramos, Jan Bitenc, Manuel Melle‐Franco, Manuel Souto   +7 more
wiley   +1 more source

Tailored Redox‐Active Catholytes Enabling High‐Rate and High‐Loading All‐Solid‐State Lithium‐Sulfur Batteries

Advanced Materials, EarlyView.
This study explores iodine substitution in solid electrolytes to overcome sluggish redox kinetics and poor charge transport in all‐solid‐state Li‐S batteries. The resulting iodine‐rich, amorphous phase and superionic, nanocrystalline domains enable effective redox mediation and provide a robust ionic percolation network.
Jingui Yang, Ruizhuo Zhang, Ramon Zimmermanns, Mareen Schaller, Sylvio Indris, Jaehoon Choi, Simon Fleischmann, Torsten Brezesinski, Florian Strauss   +8 more
wiley   +1 more source

Unravelling the Secret of Sulfur Confinement and High Sulfur Utilization in Hybrid Sulfur‐Carbons

Advanced Materials, EarlyView.
Thermal condensation of inverse vulcanized sulfur‐carbon hybrids enables a bottom‐up sulfur confinement strategy, in which a protective carbon phase is progressively constructed around sulfur species. The resulting carbon nanodomains covalently tether sulfur chains and stabilize radical intermediates. This integrated architecture effectively suppresses
Tim Horner, Enis Oğuzhan Eren, Elif Begüm Yılmaz, Jiyong Kim, Ernesto Scoppola, Alexandros Vasileiadis, Nadezda V. Tarakina, Markus Antonietti, Paolo Giusto, Evgeny Senokos   +9 more
wiley   +1 more source

Semiconductor grade, solar silicon purification project [PDF]

Experimental apparatus and procedures used in the development of a 3-step SiF2(x) polymer transport purification process are described. Both S.S.M.S. and E.S.
Chaney, R. E., Ingle, W. M., Rosler, R. R., Thompson, S. W.   +3 more
core   +1 more source