Results 91 to 100 of about 2,545 (238)

Preparation and evaluation of advanced catalysts for phosphoric acid fuel cells [PDF]

The platinum electrocatalysts were characterized for their crystallite sizes and the degree of dispersion on the carbon supports. One application of these electrocatalysts was for anodic oxidation of hydrogen in hot phosphoric acid fuel cells, coupled ...
Baris, J., Hockmuth, J., Pagliaro, P., Stonehart, P.   +3 more
core   +1 more source

From Molecule to Material: How Support Changes Heterobimetallic Catalysts in Lactide Polymerization

Macromolecular Rapid Communications, EarlyView.
Silica‐supported heterobimetallic alkoxide complexes were developed as catalysts for lactide ring‐opening polymerization. Grafting iron‐based ate complexes onto SiO2‐700 produced well‐defined active sites, enabling controlled polymerization with predictable molar masses, narrow dispersities, and recyclability.
Fan Yang, Yahaya Nasiru, Abdulrahman Adamu Isah, Aimery de Mallmann, Mostafa Taoufik, Régis M. Gauvin, Christophe M. Thomas   +6 more
wiley   +1 more source

Preparation and evaluation of advanced electrocatalysts for phosphoric acid fuel cells [PDF]

Two cooperative phenomena are required the development of highly efficient porous electrocatalysts: (1) is an increase in the electrocatalytic activity of the catalyst particle; and (2) is the availability of that electrocatalyst particle for the ...
Baris, J., Hochmuth, J., Pagliaro, P., Stonehart, P.   +3 more
core   +4 more sources

Metal Hydrides‐Based Hydrogen Purification Systems—A Review

MetalMat, EarlyView.
Metal hydrides as an innovative means to purify hydrogen can enable new avenues in the use of hydrogen as a clean energy vector across its production methods. ABSTRACT This review investigates the critical role of purification for enabling the use of hydrogen from various production pathways.
Cameron Reid, Wei Liu, Kondo‐Francois Aguey‐Zinsou   +2 more
wiley   +1 more source

High‐Coercivity Nd2Fe14B/α‐Fe Nanocomposites With Ultrafine Nanocrystalline Structure via Zr‐Induced Synchronous Precipitation

Rare Metals, EarlyView.
ABSTRACT Nanocomposite permanent magnets with reduced rare‐earth content represent a promising class of materials for next‐generation high‐performance applications. However, asynchronous precipitation of soft and hard magnetic phases often results in grain size mismatch and limited coercivity.
Xiaowei Zhang, Jun Li, Chang Liu, Renquan Wang, Hongfu Liu, Xiaotao Bao, Ying Liu   +6 more
wiley   +1 more source

Twin‐Wire In Situ Additive Manufacturing of NiTiNb Eutectic Alloys: Eliminating Unmelted Nb Particles and Tailored Superelasticity

Rare Metals, EarlyView.
ABSTRACT A major challenge in fabricating eutectic NiTiNb alloys is the incomplete melting of Nb due to its much higher melting point than the NiTi matrix. In this work, a novel electron‐beam freeform additive manufacturing strategy is developed to eliminate unmelted Nb particles and achieve a fully eutectic structure through independent dual‐wire ...
Qing‐Da Zhang, Bao‐Xian Su, Chen Liu, Zhe Li, Zhi‐Wen Li, Meng‐Hao Zhong, Bao Ding, Rui‐Run Chen, Liang Wang, Yan‐Qing Su   +9 more
wiley   +1 more source

New Advances of Degradable Magnesium‐Based Metal Biomaterials in the Field of Orthopedics

Rare Metals, EarlyView.
ABSTRACT Based on their outstanding biomechanical properties and superior osteogenic activity, magnesium (Mg) and its alloys have been extensively investigated for their biocompatibility and therapeutic efficacy in treating fractures and bone defects.
Jia‐Nan Yu, Shao‐Sheng Jia, Rong‐Bang Sun, Tong Zhang, Ling‐Chuang Bai, Di Mei, Shi‐Jie Zhu, Lan Chen, Shao‐Kang Guan   +8 more
wiley   +1 more source

Probing the Validity of the Zintl-Klemm Concept for Alkaline-Metal Copper Tellurides by Means of Quantum-Chemical Techniques. [PDF]

Materials (Basel), 2020
Smid S, Steinberg S.
europepmc   +1 more source

Dual‐Stage Heat Treatment for Enhanced Hydrogen Storage Properties of Mg−Ni−Y Alloys

Rare Metals, EarlyView.
ABSTRACT Mg−Ni−Y alloy is considered to be one of the most promising hydrogen storage materials, but its high dehydrogenation energy barrier hinders its practical application. A dual‐stage heat treatment (490°C × 4 h + 550°C × 4 h) is applied to optimize the microstructure and hydrogen storage performance of a vacuum‐melted Mg94Ni3Y3 alloy.
You Lv, Qiang Yang, Jixing Zhu, Dongyue Zhao, Junyuan Fan, Valery Konstantinovich Sheleg, Xin Qiu   +6 more
wiley   +1 more source

Twisting of 2D Kagomé Sheets in Layered Intermetallics. [PDF]

ACS Cent Sci, 2021
Sinha M, Vivanco HK, Wan C, Siegler MA, Stewart VJ, Pogue EA, Pressley LA, Berry T, Wang Z, Johnson I, Chen M, Tran TT, Phelan WA, McQueen TM.   +13 more
europepmc   +1 more source