Results 41 to 50 of about 27,752 (344)

A highly efficient polysulfide mediator for lithium–sulfur batteries

Nature Communications, 2015
The lithium–sulfur battery is receiving intense interest because its theoretical energy density exceeds that of lithium-ion batteries at much lower cost, but practical applications are still hindered by capacity decay caused by the polysulfide shuttle ...
Xiao Liang, Connor J. Hart, Q. Pang, A. Garsuch, T. Weiss, L. Nazar   +5 more
semanticscholar   +1 more source

A Holistic Stabilization of the Anode in Lithium‐Sulfur Batteries Through a Ternary Alloy Fusion

Advanced Functional Materials, EarlyView.
LiTeAl anodes fabricated through a scalable thermal fusion technique holistically addresses the stability issues faced by lithium‐metal anodes in lithium–sulfur batteries. Aluminum forming a skeletal network with lithium suppresses dendrite growth and enhances energy density, while tellurium forming a robust SEI facilitates Li+‐ion flow.
Akhil Shenoy, Arumugam Manthiram
wiley   +1 more source

Human hair keratin responds to oxidative stress via reactive sulfur and supersulfides

Advances in Redox Research
Keratin is a central component of human hair proteins, which explicitly possesses many cysteine residues (Cys-SH). For a long time, these Cys-SH residues were believed to contribute to human hair strength by forming intra- and inter-molecular disulfide ...
Takeru Hirai, Mayumi Ikeda-Imafuku, Nanami Tasaka, Victor Tuan Giam Chuang, Ming Xian, Tatsuhiro Ishida, Takaaki Akaike, Yu Ishima   +7 more
doaj   +1 more source

Investigating the Effect of Modifier Chain Length on Insulation Properties of Polysulfide Modified Epoxy Resin [PDF]

Iranian Journal of Chemistry & Chemical Engineering, 2014
Polysulfide resins,with trade name of  G4 and G112, with short and long chain lengths respectively, were used as reactive modifiers to toughen epoxy resin. The effects of molecular weights of G4 and G112 on impact resistance, dielectric constant, thermal
Tohid Farajpour, Yadollah Bayat, Mohammad Hossein Keshavarz, Ebrahim Zanjirian   +3 more
doaj  

Metal Polysulfides as High Capacity Electrode Active Materials — Toward Superior Secondary Batteries Based on Sulfur Chemistry

Electrochemistry, 2023
Lithium/transition-metal polysulfide batteries are a promissing candidate for next-generation batteries with high energy densities. Transition metal polysulfides and lithium- or sodium-containing transition metal sulfides exhibit large reversible ...
Atsushi SAKUDA
doaj   +1 more source

Polysulfid-Radikalionen in Aceton / Polysulfide Radical Ions in Acetone

Zeitschrift für Naturforschung B, 1987
Abstract The formation of sulfur radical ions S 3 ~ and S 4 " in the blue and violet solutions of potassium sulfide and sulfur in acetone on adding 18C6 crown ether has been demonstrated by spectrophotometric titra-tion under anaerobic conditions. Neither the colour nor the spectra of the solutions point at S 2 ~.
F. Seel, M. Wagner
openaire   +1 more source

Nafion Inhibits Polysulfide Crossover in Hybrid Nonaqueous Redox Flow Batteries

, 2022
We report on the effectiveness of sodium-exchanged Nafion membranes for inhibiting polysulfide crossover during redox flow battery operation. The solubility of polysulfides allows them to be used as a high-capacity catholyte for nonaqueous redox flow ...
Thomas A. Zawodzinski (1489987), Jagjit Nanda (1285947), Michelle L. Lehmann (11798422), J. Landon Tyler (9446193), Robert L. Sacci (1550779), Guang Yang (154978)   +5 more
core   +1 more source

Ultrasmall High‐Entropy Materials: Nanoscale Effects, Synthesis, and Mechanistic Insights

Advanced Functional Materials, EarlyView.
This review article focuses on sub‐10 nm high‐entropy materials that combine nanoscale design with complex compositions for next‐generation applications. ABSTRACT Ultrasmall high‐entropy nanomaterials (USHENMs, <10 nm) merge multicomponent chemistry with size‐dependent effects, forming a distinct class of materials with unprecedented properties.
Yueyue He, Wenbo Wang, Simon Schweidler, Yanjiao Ma, Ben Breitung, Torsten Brezesinski   +5 more
wiley   +1 more source

Illuminating Polysulfide Distribution in Lithium Sulfur Batteries; Tracking Polysulfide Shuttle Using Operando Optical Fluorescence Microscopy [PDF]

High-energy-density lithium sulfur (Li–S) batteries suffer heavily from the polysulfide shuttle effect, a result of the dissolution and transport of intermediate polysulfides from the cathode, into the electrolyte, and onto the anode, leading to rapid ...
Rettie, Alexander J. E., Coke, Kofi, Robinson, James B., Shearing, Paul R., Johnson, Michael J., Miller, Thomas S.   +5 more
core   +2 more sources

Carbyne Polysulfide as a Novel Cathode Material for Rechargeable Magnesium Batteries

The Scientific World Journal, 2014
We report the formation of carbyne polysulfide by coheating carbon containing carbyne moieties and elemental sulfur. The product is proved to have a sp2 hybrid carbon skeleton with polysulfide attached on it.
Yanna NuLi, Qiang Chen, Weikun Wang, Ying Wang, Jun Yang, Jiulin Wang   +5 more
doaj   +1 more source