Use of an oxyhydroxy salt related to the family of lamellar double hydroxides for the design and manufacture of an electrode with a view to storing electrical energy

摘要

The present invention relates to the use of an oxyhydroxy salt related to the family of layered double hydroxides for the design and manufacture of an electrode with a view to storing electrical energy.

主权项

1. A material for an electrode of an energy storage device having a theoretical electrical energy capacity greater than or equal to 160 Ah/kg, the material comprising at least one compound related to a ferrous-ferric layered double hydroxide (LDH),
said at least one compound comprising at least one divalent cation DII and at least one trivalent cation TIII of general formula (I):
[DII3n(1−x)TIII3nxO6nHn(7−3x)]n+[An−, m H2O]n−  (I) wherein An− is an anion of charge n, n having the values 1, 2 or 3, m is an integer in the range from 1 to 10, and x is from 0 to 1, excluding 1, wherein said at least one compound comprises a minimum amount of FeII of 1%, permitting conversion of FeII to FeIII.