Patent ID: 9331333
Filing Date: 2016-05-03
CPC Classification: H01M,Y02E

Claim Text:
1. Active electrode material composed of an oxide of Na and Ti with a structure corresponding to the layered structure of the compound Na 2 Ti 3 O 7 , said oxide conforming to the formula Na x Ti(IV) a Ti(III) b M c O 7 (A), in which: x denotes the number of Na Ti(IV) and Ti(III) represent titanium in the oxidation states IV and III, respectively; M represents one or more elements selected from 3d transition metals and 4d transition metals; the values of x, a, b and c are such that the compound is electronically neutral in view of the oxidation state of the element or elements represented by M; and the ratio (a+b)/c is greater than 0.5.