Results 91 to 100 of about 6,361 (234)

Going from Pt to PGM‐free Catalysts: Effects of Ink Compositions on PEM Water Electrolysis

ChemPhysChem, Volume 26, Issue 6, March 15, 2025.
Optimisation of cathode ink formulations regarding the ratio between catalyst, carbon and binder results in a boost in PEM water electrolysis performance. The optimisation can be transferred from pentlandites to platinum and selenide catalysts, wherein the metal chalcogenides show a stronger performance enhancement.
Janna Wierper, Jannick Hiltrop, Kevinjeorjios Pellumbi, Julia Jökel, Sebastian Sanden, Miłosz Kożusznik, Andrzej Mikuła, Ulf‐Peter Apfel   +7 more
wiley   +1 more source

Mechanochemistry to Form Substituted Imidazoles, Imidazolium Salts and NHC–Gold Complexes with Fluorine-Containing Groups

Molecules
Synthesis of organometallic compounds has had an enormous impact on medicine. In this context, gold complexes are gaining much interest since the discovery of the cytotoxic effect of cisplatin.
Chloé Salis, Sabrina Mohammedi, Lucia Turazza, Yuna Blandin, Maritie Garnier, Catherine Hemmert, Michel Baltas, Heinz Gornitzka   +7 more
doaj   +1 more source

Transition Metal Compounds as Thermochromic Materials: Classification, Properties, Limitations, and Applications

EcoEnergy, EarlyView.
This review systematically examines how different transition metal compounds—such as binary and multinary metal oxides, halides, sulfides, and salts—exhibit thermochromism based on the d‐electron configurations of their transition metal cations. It focuses on three main mechanisms of thermochromism: phase transition, charge transfer, and bandgap change.
Jie Wang, Shan Wang, Long Yuan, Ling Zuo, Hui Qi, Changmin Hou   +5 more
wiley   +1 more source

Synergistic Optical Strategies for Enhanced Perovskite Photocatalytic Activity

EcoEnergy, EarlyView.
This review addresses bottlenecks of halide perovskites' photoactive components from an optics‐driven perspective and organizes recent advances into four interconnected design principles. This review provides practical design principles and outlines key directions toward efficient, selective, and stable perovskite photocatalysis for CO2 reduction ...
Jaemin Jeong, Myeongjin Seol, Sang Hyun Ahn, Soo Young Kim   +3 more
wiley   +1 more source

Mechanochemical synthesis Ba0.8Sr0.2TiO3 [PDF]

, 2011
Ba0.8Sr0.2TiO3 was prepared from the starting materials BaCO3, SrCO3 and TiO2 through solid state reaction. Mixture of these oxides was mechanically activated using a high-energy ball mill at different time intervals from 0 to 120 minutes. The crystal structure was determined by X-ray diffraction to obtain information about the composition of phase ...
Kosanović, Darko, Filipović, Suzana, Mitrić, Miodrag, Marković, Smilja, Obradović, Nina, Maričić, Aleksa, Živojinović, Jelena, Ristić, Momčilo M., Dukić, Milan   +8 more
openaire   +1 more source

Hydride Materials for Advanced Electrochemical Energy Storage: Progress and Perspectives

EcoEnergy, EarlyView.
Hydrides are emerging as functional materials for low‐carbon electrochemical energy storage. Complex hydrides provide polyanionic electrolyte frameworks for all‐solid‐state, Li–S, and multivalent batteries; hydride ion conductors enable H− transport for emerging hydride‐based cells; and metal hydrides offer established electrode chemistries for Ni–MH ...
Taehyun Kim, Taegyoung Lee, Huijeong Oh, Shin‐ichi Orimo, Sangryun Kim   +4 more
wiley   +1 more source

Activity enhancement of carbon nanofiber-based catalysts for CO2 methanation by mechanochemical synthesis

Journal of CO2 Utilization
Carbon nanofibers (CNFs) modified with CeO2 were employed as support for the synthesis of Ni catalysts for the CO2 methanation reaction. Two different preparation methods were investigated: incipient wetness impregnation and mechanochemical synthesis ...
Christian Di Stasi, Jaime López-de los Ríos, Alejandro Ayala-Cortés, Daniel Torres, José Luis Pinilla, Isabel Suelves   +5 more
doaj   +1 more source

Mechanochemical Synthesis of Nanocrystalline CdS in a Laboratory and Industrial Mill [PDF]

Acta Montanistica Slovaca, 2004
Nanocrystalline materials have been of interest of more than 20 years and this interest is still increasing. The preparation and characterization of different chalcogenides have attracted a considerable attention due to their important nonlinear ...
Eberhard Gock, Peter Baláž, Erika Godočíková   +2 more
doaj  

Redistributing Cobalt and Tungsten From WC–Co Soft Scrap Toward Sustainable Cathode and Coating Materials for Lithium‐Ion Batteries

ENERGY &ENVIRONMENTAL MATERIALS, EarlyView.
A sustainable upcycling strategy transforms tungsten carbide–cobalt (WC–Co) soft scrap into high‐performance cathode materials. Recycled Co with trace nickel (Ni) is resynthesized into stabilized LiCoO2 with superior high‐voltage durability, while the recovered tungsten is further utilized as tungsten trioxide to enhance Ni‐rich cathode interfaces ...
Seulgi Kim, Kyoung Sun Kim, Young‐Sang Yu, Ingyu Choi, Seungo Jeong, Eun‐Jung Shin, Seung‐Hyun Kim, Sung‐Hak Jo, Seung‐Ho Yu, Hyungsub Kim, Dongju Lee   +10 more
wiley   +1 more source

Sustainable Revival of Spent Lithium Iron Phosphate Cathodes in Li‐Ion Batteries: Recycling and Surface Engineering Approaches

ENERGY &ENVIRONMENTAL MATERIALS, EarlyView.
Schematic illustration of the lifecycle of LiFePO4 cathodes. Lithiation and delithiation reactions happen through its discharging and charging processes. Recycling pathways including hydrometallurgy, pyrometallurgy, and direct regeneration enable sustainable reuse of spent LFP materials. Surface modification approaches (carbon, polymer, and metal/metal
Yan He, Ruigang Wang
wiley   +1 more source