Results 51 to 60 of about 27,752 (344)
Electrochemical Phase Evolution of Metal-Based Pre-Catalysts for High-Rate Polysulfide Conversion.
Angewandte Chemie, 2020 In-situ evolution of electrocatalysts is of paramount importance in defining catalytic reactions. Catalysts for aprotic electrochemistry such as lithium-sulfur (Li-S) batteries are the cornerstone to enhance intrinsically sluggish reaction kinetics but ...
Meng Zhao +7 more
semanticscholar +1 more source
Advanced Functional Materials, EarlyView.Sulfur‐doped graphitized carbon nanofibers act as adaptive catalyst–support platforms, enabling dynamic sulfur‐mediated reconstruction and strong metal–support interactions. This unique behavior enhances catalyst stability and controls reaction pathways, achieving highly selective urea oxidation (∼92% N2) coupled with efficient hydrogen evolution ...
Melanie Guillén‐Soler +4 more
wiley +1 more source
Nature Communications, 2021 Regulating the adsorption behaviour of the polysulfide species is the key to achieving highly stable Li-S batteries. Here, the authors show that amorphization-induced redistribution of d orbitals enable CoO to be a favourable candidate for polysulfide ...
Ruilong Li +15 more
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Phase Engineering of Nanomaterials (PEN): Evolution, Current Challenges, and Future Opportunities
Advanced Materials, EarlyView.This review summarizes the synthesis, phase transition, advanced characterization spanning ex situ to in situ and operando techniques, and diverse applications of phase engineering of nanomaterials (PEN). It further outlines key challenges and future opportunities, such as phase stability, architecture control, and artificial intelligence (AI)‐driven ...
Ye Chen +7 more
wiley +1 more source
Diyala Journal of Engineering Sciences, 2014 In this research, multi-walled carbon nanotubes (MWCNTs) were used to enforce the blend of epoxy /polysulfide and then tensile and wear behavior of this reinforcement were evaluated.
Adnan Nemaa +2 more
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Membranes, 2022 Lithium-sulfur batteries with high theoretical specific capacity and high energy density are considered to be one of the most promising energy storage devices.
Bo-Wen Zhang +7 more
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Advanced Materials, EarlyView.Ultrathin lithium metal anodes (≤15 µm) offer a promising route to high‐energy‐density batteries due to their high capacity and low potential. This review presents design principles for ultrathin Li, evaluates fabrication strategies, and discusses challenges in liquid and solid‐state cells.
Cheng Wang +9 more
wiley +1 more source
UV-ATR Spectroscopy Study of the Speciation in Aqueous Polysulfide Electrolyte Solutions
International Journal of Electrochemical Science, 2012 The distribution of species, dissolution of sulfur as polysulfide and oxoanions in aqueous polysulfide electrolytes at room temperature was investigated. The dissociation of sodium sulfide in water produces equal molar concentrations of OH- and HS- ions.
Safyan A. Khan
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Acta Crystallographica Section E: Crystallographic Communications, 2020 The title compound, [Mn(S4)(C8H20N4)], was accidentally obtained by the hydrothermal reaction of Mn(ClO4)2·6H2O, cyclen (cyclen = 1,4,7,10-tetraazacyclododecane) and Na3SbS4·9H2O in water at 413 K, indicating that polysulfide anions might represent ...
Felix Danker +2 more
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Mn-N-C Nanostructure Derived from MnO2-x/PANI as Highly Performing Cathode Additive in Li-S Battery
Reactions, 2021 Highly dispersed Mn metallic nanoparticles (15.87 nm on average) on a nitrogen-doped porous carbon matrix were prepared by thermal treatment of MnO2-x/polyaniline (PANI), which was derived from the in situ polymerization of aniline monomers initiated by ...
Xingyuan Gao +9 more
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