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 oligomeric or polymeric siloxanes containing phosphonic acid groups, to a process for preparing them, to oligomeric or polymeric siloxanes comprising silyl and/or alkyl phosphonate groups, to blends comprising at least one oligomeric or polymeric siloxane of the invention containing polyphosphonic acid groups and/or at least one oligomeric or polymeric siloxane containing silyl and/or alkyl phosphonate groups and at least one further polymer, to membranes, films or composites comprising at least one oligomeric or polymeric siloxane of the invention containing phosphonic acid groups and/or at least one oligomeric or polymeric siloxane of the invention containing silyl polyphosphonate and/or alkyl polyphosphonate groups or a blend according to the invention, and also to various uses of oligomeric or polymeric siloxanes containing phosphonic acid groups and/or oligomeric or polymeric siloxanes containing silyl phosphonate and/or alkyl phosphonate groups or blends of the invention.