The continuous efficient conversion and directional deposition of lithium (poly)sulfides enabled by bimetallic site regulation

Uniform Lithium Deposition Achieved by SnO2/Hydroxypropyl Methyl Cellulose Composite Separator toward Ultrastable Lithium Metal Batteries

“…Moreover, the separator is a stable component that directly contacts the electrolyte and the anode and can serve as an ion transport channel that affects Li + transport and Li plating/stripping. Nevertheless, commercial polyolefin separators have irregular pore distribution, poor electrolyte wettability, and low ionic conductivity, all of which hinder uniform Li + transport . Meanwhile, because of their low mechanical modulus, they do not become effective physical barriers to suppress Li dendrites.…”

“…Nevertheless, commercial polyolefin separators have irregular pore distribution, poor electrolyte wettability, and low ionic conductivity, all of which hinder uniform Li + transport. 21 Meanwhile, because of their low mechanical modulus, they do not become effective physical barriers to suppress Li dendrites. For this reason, modified separators with high mechanical strength, ionic conductivity, and lithophilicity are particularly significant to suppress Li dendrites.…”

FeCoNi Ternary Nano-Alloys Embedded in a Nitrogen-Doped Porous Carbon Matrix with Enhanced Electrocatalysis for Stable Lithium–Sulfur Batteries

“…Meanwhile, the Tafel plot acquired from the CV curves at 0.1 mV s −1 also confirms that the cell with the FNC@NC//PP separator possesses the smallest Tafel slope, as shown in Figure S3a,b, which indicates that a smaller over potential is required for the redox reaction. 39,40 To further certify the effectiveness of FNC@NC to catalyze the conversion of LiPS, the Li 2 S 6 symmetric batteries, which were assembled with different electrodes, were tested at a scan rate of 5 mV s −1 . As shown in Figure 3f, the cell with the FNC@NC//carbon paper (CP) electrodes shows a higher peak current, indicating that the conversion of LiPS can be accelerated by the FNC nanoparticles in the electrochemical reaction process.…”

A Novel EDOT/F Co‐doped PMIA Nanofiber Membrane as Separator for High‐Performance Lithium‐Sulfur Battery

“…At present, the research about separators of Li−S cells mainly focuses on the development of modified commercial separators and novel separators [3] . The methods of modifying commercial separators generally involve the formation of a thin layer of carbon, polymer and inorganic oxide materials on one side of the separator by coating, vacuum filtration, screen printing, magnetron sputtering, or a combination of these methods [4] . And as for the novel separators, some novel polymer membranes such as perfluorinated sulfonic acid polymer, polyacrylonitrile (PAN), polyvinylidene fluoride (PVDF), polyvinyl oxide (PEO) and polymethyl methacrylate (PMMA) and their combined membranes have been widely studied and applied in separators of Li−S cells.…”

“…[3] The methods of modifying commercial separators generally involve the formation of a thin layer of carbon, polymer and inorganic oxide materials on one side of the separator by coating, vacuum filtration, screen printing, magnetron sputtering, or a combination of these methods. [4] And as for the novel separators, some novel polymer membranes such as perfluorinated sulfonic acid polymer, polyacrylonitrile (PAN), polyvinylidene fluoride (PVDF), polyvinyl oxide (PEO) and polymethyl methacrylate (PMMA) and their combined membranes have been widely studied and applied in separators of LiÀ S cells. Among these polymer membranes, poly-m-phenyleneisophthalamide (PMIA) is widely considered to be one of the most promising materials for high-temperature separator of LiÀ S batteries due to its fantastic thermal stability, brilliant chemical corrosion resistance, excellent self-extinguishing features, outstanding mechanical property and electrical insulation ability.…”