Solid Polymer Electrolyte for Improving the Safety of the Lithium-Sulfur Battery

Abstract

Polymer electrolytes that containing: 1) Polymer matrix Polyvinylidene fluoride (PVDF), 2) Ionic liquid / quaternary ammonium salt, 3) Lithium salt - LiN(CF3So2)2, 4) Plasticizer - tetraglym (G4) have been investigated using: scanning electron microscopy, impedance, cyclic voltammetry and galvanostatic studies in the lithium-sulfur system. The prospects of the polymer electrolyte use for improving the safety of lithium-sulfur batteries are shown. Developed polymer electrolytes are promising for use in Li - S batteries in a wide temperature range from minus 20°C to plus 100°C, and for long-term storage of Li-S batteries.

Review and Perspectives on Advanced Binder Designs Incorporating Multifunctionalities for Lithium–Sulfur Batteries

“…Researchers have focused on various strategies for modifying different components of the battery, including cathode, − anode, − separators, − and electrolytes , to understand these issues . These modifications include immobilization of sulfur into certain conducting hosts, ,− inserting functional interlayers between cathode and separators, − separator modification, , using electrolyte additives, − etc. However, these extra additives added to the electrode can increase the cost and decrease the active material mass loading due to the mass and space occupied by them, which can undermine the energy density of the cell.…”