Abstract: Electrolyte materials for use in electrochemical cells, electrochemical cells comprising the same, and methods of making such materials and cells, are generally described. In some embodiments, the materials, processes, and uses described herein relate to electrochemical cells comprising sulfur and lithium such as, for example, lithium sulfur batteries.

Abstract: Electrolyte materials for use in electrochemical cells, electrochemical cells comprising the same, and methods of making such materials and cells, are generally described. In some embodiments, the materials, processes, and uses described herein relate to electrochemical cells comprising sulfur and lithium such as, for example, lithium sulfur batteries. The electrolyte can comprise a polymeric material and, in some cases, an absorbed auxiliary material. For example, the electrolyte material can be capable of forming a gel, and the auxiliary material can comprise an electrolyte solvent. In some instances, the electrolyte material can comprise at least one organic (co)polymer selected from polyethersulfones, polyvinylalcohols (PVOH) and branched polyimides (HPI). The non-fluid material in the electrolyte, when configured for use, can, alone or in combination with the optional absorbed auxiliary material, have a yield strength greater than that of lithium metal, in some embodiments.

Abstract: The present invention relates to a process for the preparation of porous particles comprising at least one polyimide by reacting (A) at least one polyisocyanate having on average at least two isocyanate groups per molecule and (B) at least one polycarboxylic acid having at least two COOH groups per molecule or anhydride thereof, in the presence of at least one solvent, optionally at least one catalyst and optionally at least one further additive, to cause precipitation of a polyimide in the solvent to form the porous particles, to porous particles, obtained with this process, to parts, bodies, foams and/or material comprising these porous particles, and to the use of the porous particles or of the parts, bodies, foams and/or material as insulation material and in vacuum insulation.

Abstract: Electrode structures and electrochemical cells, including lithium-sulfur electrochemical cells, are provided. The electrode structures and/or electrochemical cells described herein may include one or more protective layers comprising a polymer layer and/or a gel polymer electrolyte layer. Methods for making electrode structures including such components are also provided.

Abstract: Electrochemical cell comprising (A) at least one anode as component (A), (B) at least one cathode as component (B), (C) at least one non-aqueous electrolyte as component (C), (D) at least one separator positioned between anode (A) and cathode (B), as component (D), characterized in that separator (D) is manufactured from at least one polyimide selected from reaction products of (a) at least one polyimide selected from condensation products of (?) at least one polyisocyanate having on average at least two isocyanate groups per molecule and (?) at least one polycarboxylic acid having at least 3 COOH groups per molecule or an anhydride or ester thereof, and (b) at least one diol or triol, and subsequently optionally reacted with (c) at least one polyisocyanate having on average at least two isocyanate groups per molecule.

Abstract: Electrode structures and electrochemical cells, including lithium-sulfur electrochemical cells, are provided. The electrode structures and/or electrochemical cells described herein may include one or more protective layers comprising a polymer layer and/or a gel polymer electrolyte layer. Methods for making electrode structures including such components are also provided.

Abstract: The present invention relates to a process for the preparation of porous particles comprising at least one polyimide by reacting (A) at least one polyisocyanate having on average at least two isocyanate groups per molecule and (B) at least one polycarboxylic acid having at least two COOH groups per molecule or anhydride thereof, in the presence of at least one solvent, optionally at least one catalyst and optionally at least one further additive, to cause precipitation of a polyimide in the solvent to form the porous particles, to porous particles, obtained with this process, to parts, bodies, foams and/or material comprising these porous particles, and to the use of the porous particles or of the parts, bodies, foams and/or material as insulation material and in vacuum insulation.

Abstract: Electrochemical cell comprising (A) at least one anode as component (A), (B) at least one cathode as component (B), (C) at least one non-aqueous electrolyte as component (C), (D) at least one separator positioned between anode (A) and cathode (B), as component (D), characterized in that separator (D) is manufactured from at least one polyimide selected from branched condensation products of (a) at least one polycarboxylic acid having at least 3 COOH groups per molecule or an anhydride or ester thereof, and (b) and at least one compound, selected from (b1) at least one polyamine having on average more than two amino groups per molecule and (b2) at least one polyisocyanate having on average more than two isocyanate groups per molecule.

Abstract: Electrolyte materials for use in electrochemical cells, electrochemical cells comprising the same, and methods of making such materials and cells, are generally described. In some embodiments, the materials, processes, and uses described herein relate to electrochemical cells comprising sulfur and lithium such as, for example, lithium sulfur batteries. The electrolyte can comprise a polymeric material and, in some cases, an absorbed auxiliary material. For example, the electrolyte material can be capable of forming a gel, and the auxiliary material can comprise an electrolyte solvent. In some instances, the electrolyte material can comprise at least one organic (co)polymer selected from polyethersulfones, polyvinylalcohols (PVOH) and branched polyimides (HPI). The non-fluid material in the electrolyte, when configured for use, can, alone or in combination with the optional absorbed auxiliary material, have a yield strength greater than that of lithium metal, in some embodiments.