Back to results
US 2014/0272595 A1Published application
Compositions for use as protective layers and other components in electrochemical cells
AssigneesBASF SE, Sion Power Corporation
InventorsAnna Cristadoro, Oliver Gronwald, Benedikt Crone, Raimund Pietruschka, Ingrid Haupt, Bala Sankaran
Life of this patent
Estimating the term…
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.
Claims31
A lithium-sulfur electrochemical cell, comprising:
- an anode comprising lithium metal or a lithium metal alloy;
- a polymer layer comprising a polymeric material, wherein the polymeric material comprises a branched polyimide formed by reaction of:
- (a) at least one polyimide selected from condensation products of:
- (α) at least one polyisocyanate having on average at least two isocyanate groups per molecule;
- and
- (β) 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
- a cathode comprising sulfur.
7 more elements
A lithium-sulfur electrochemical cell, comprising:
- an anode comprising lithium metal or a lithium metal alloy;
- a polymer layer comprising a polymeric material, wherein the polymer material has a decomposition temperature of greater than or equal to about 200° C.;
- and
- a cathode comprising sulfur,
- wherein the electrochemical cell is adapted and arranged to operate at a temperature of greater than or equal to about 150° C. without employing an auxiliary cooling mechanism and without the electrochemical cell experiencing thermal runaway.
2 more elements
Dependencies are inferred from the claim text.