Results 61 to 70 of about 338,671 (208)

Titanium‐Catalyzed Diastereoselective Keto‐ and Iminonitrile Cyclizations

Chemistry – A European Journal, EarlyView.
The titanium(III)‐catalyzed diastereoselective cyclization of readily‐available substituted ketonitriles gives cyclopentanones in good yield and stereoselectivity. Subsequent 1,2‐addition allows the preparation of cyclopentyls with three consecutive stereocenters.
Christoph Kern, Ritu Singh, Michael A. Unkrig‐Bau, Lukas Jakob, Jan Streuff   +4 more
wiley   +1 more source

Enhancing Anode‐Free Lithium Metal Batteries: A Lightweight MPTS‐MXene Current Collector for Superior Performance and Energy Density

ENERGY &ENVIRONMENTAL MATERIALS, EarlyView.
This study introduces an MPTS‐modified MXene current collector for anode‐free lithium metal batteries (AFLMBs). A key advantage of MPTS‐MXene is its ultralight weight, only 15% as heavy as standard copper per unit volume. Its special layered structure and Si‐O rich surface help lithium deposit smoothly and flat, while forming a protective layer that ...
Jiawei Ren, Jiayi Zhang, Jingchao Zhang, Jianbo Li, Yonas Tsegaye Megra, Jianchuan Wang, Yong Du, Rong Huang, Yi Cui, Chenguang Liu, Li Yang   +10 more
wiley   +1 more source

Interfacial Charge‐Transfer Enhancement via High‐Entropy Alloy Regulated MXene Heterostructures for Asymmetric Supercapacitor Applications

ENERGY &ENVIRONMENTAL MATERIALS, EarlyView.
A novel core‐shell HEA@MXene composite was synthesized to enhance supercapacitor electrochemistry. DFT simulations reveal the role of HEA doping in regulating the MXene interface. The HEA@MXene composite exhibits a high specific capacitance of 872 F g−1 at 1 A g−1 with remarkable stability in 1 M KOH.
Fenhong Song, Ruibo Zhang, Wanlong Chu, Zengqiang Tan, Long Ma, Jing Fan, Gang Wang, Qi Qi, Yang Cao   +8 more
wiley   +1 more source

Vacuum Brazing Ti–15–3 with a TiNiNb Braze Alloy

Metals, 2019
Among all types of brazing fillers, Ti-based fillers show satisfactory joint strengths in brazing titanium alloys. However, the major concern in using such fillers is the formation of Cu/Ni/Ti intermetallic compound(s) in the joint.
Chuan-Sheng Kao, Leu-Wen Tsay, Shan-Bo Wang, Ren-Kae Shiue   +3 more
doaj   +1 more source

Hydroxylated MXene‐Assisted In Situ Synthesis of Ultrafine CoHCC Nanoparticles for High‐Performance Potassium‐Ion Battery Anodes

ENERGY &ENVIRONMENTAL MATERIALS, EarlyView.
This study develops hydroxylated MXene‐supported ultrafine cobalt hexacyanocobaltate anodes through interfacial engineering, achieving enhanced conductivity, structural stability, and superior potassium‐ion storage performance. Cobalt‐based Prussian blue analogs (CoHCC) have emerged as highly promising anode materials for potassium‐ion batteries due to
Anni Chen, Jie Wang, Lei Chen, Yuehua Man, Zeyu Yuan, Jianchun Bao, Xiaosi Zhou   +6 more
wiley   +1 more source

Effect of bonding temperature on tensile behaviors and toughening mechanism of W/(Ti/Ta/Ti) multilayer composites

High Temperature Materials and Processes
The inherent low-temperature brittleness has restricted the application of tungsten materials. One option for enhancing the tungsten fracture toughness is to use tungsten-based layered composites.
Liu Rui, Liu Houlong, Zhu Jie, Li Huan, Wu Jinping   +4 more
doaj   +1 more source

Smart Charging With Hourly Pricing as Policy Intervention: Reducing Costs and Grid Congestion for Promoting Electric Vehicles in Developing Countries

Energy Science &Engineering, EarlyView.
Smart charging with hourly pricing optimizes electric vehicle (EV) charging in developing countries, reducing EV owner costs by 30% and easing grid congestion. Using an agent‐based energy management system, the study shows dynamic pricing effectively shifts charging to off‐peak hours, enhancing grid stability and supporting sustainable EV adoption in ...
Maha Iftikhar, Kashif Imran, Farah Ul Ain, Abdul Kashif Janjua, Rimsha Razaq, Sohail Khan, Arqam Ilyas, Shahbaz Ul Haq, Muhammad Akmal   +8 more
wiley   +1 more source

Characterization of Fatty Acid Profiles and Nutritional Quality Indices in Commercial Spreadable Processed Cheeses: Comparative Analysis and Health Implications

Food Safety and Health, EarlyView.
Natural processed cheeses showed a more favorable nutritional profile, including higher unsaturated fatty acids and better functional performance. A balanced fatty acid composition was identified as a key factor influencing meltability, oil separation, and overall quality of processed cheeses.
Shaimaa M. Hamdy, Amr A. Metwally, Mahmoud A. Deghedie, Hani S. Abdelmontaleb   +3 more
wiley   +1 more source

Advancements in Ti₃C₂ MXene-Integrated Various Metal Hydrides for Hydrogen Energy Storage: A Review

Nanomaterials
The current world is increasingly focusing on renewable energy sources with strong emphasis on the economically viable use of renewable energy to reduce carbon emissions and safeguard human health.
Adem Sreedhar, Jin-Seo Noh
doaj   +1 more source

Modificación de la superficie de aleación de Ti-6Al-4V con multicapa delgada de Ti-C/Ti-N/Ti por pulverización catódica de corriente continua de magnetron

Revista de Metalurgia, 2004
El recubrimiento de la aleación Ti-6Al-4V con multicapas delgadas de Ti-C/Ti-N/Ti se examinó por medio de pulverización catódica (sputtering) magnetron DC, con el objetivo de mejorar no sólo la biocompatibilidad y la resistencia al desgaste de esta ...
T. Sonoda, A. Watazu, J. Zhu, W. Shi, T. Yamada, K. Kato, T. Asahina   +6 more
doaj   +1 more source