A Superficial Sulfur Interfacial Control Strategy for Fabrication of Sulfur/Carbon Composite for Potassium-Sulfur Batteries

Potassuim–sulfur (K-S) batteries in carbonate-based electrolytes have much attention because its excellent long cycle stability, more safety and inexpensiveness. Unfortunately, Potassium-sulfur batteries cannot avoid side reactions between polysulfide ions and...

Inhibition of lithium dendrite growth by forming rich polyethylene oxide-like species in a solid-electrolyte interphase in a polysulfide/carbonate electrolyte

Polyethylene oxide-like polymers form in solid-electrolyte interphase films with the addition of polysulfide ions into a carbonate electrolyte.

Investigation of Electrochemical Properties of Elemental Sulfur Dissolved in Alkaline Solution on Rhodium Electrode

In this article, the electrochemical properties of elemental sulfur dissolved in alkaline solution has been studied for the first time using the method of removing the anodic and anodic-cathodic potentiodynamic polarization curves on rhodium electrodes. The influences of different parameters for oxidation process of elemental sulfur, namely sulfur component in electrolyte concentration, scan rate and temperature were investigated. The resulting polarogram presented in oxidation reaction of polysulfide ions to elemental sulfur process. This shows that polysulfide-ions in electrolyte at cathodic polarization was restored to monosulfide, and monosulfide –ions oxidized to elemental sulfur. The effective activation energy was calculated which equals 13,67 Kj/mol, indicating the oxidation reaction of sulfur occurred in diffusion mode.

A lithium–sulfur cathode with high sulfur loading and high capacity per area: a binder-free carbon fiber cloth–sulfur material

A high capacity per area (>7 mA h cm−2) sulfur cathode with high sulfur loading (6.7 mg cm−2) was fabricated by a simple method. An ingenuity method is adopted which can improve performance of Li–S battery by forming in-situ polysulfide ions.