COMPOSITIONS FOR USE AS PROTECTIVE LAYERS AND OTHER COMPONENTS IN ELECTROCHEMICAL CELLS

摘要

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.

主权项

1. An electrode structure comprising:
an electrode comprising lithium metal or lithium alloy; a polymer layer comprising a cross-linked polymeric material formed by reaction of (aa) a polymeric material formed by reaction of
(a) at least one polyimide selected from condensation products of:
(a1) at least one polyisocyanate having on average at least two isocyanate groups per molecule; and(a2) at least one polycarboxylic acid having at least 3 COOH groups per molecule or an anhydride thereof; and(b) at least one organic amine comprising at least one primary or secondary amino group, or a mixture of at least one organic amine comprising at least one primary or secondary amino group and at least one diol or triol; and (bb) at least one polyisocyanate having on average at least two isocyanate groups per molecule.