Patent ID: 8257616
Filing Date: 2012-09-04
Classification: H01B,H01G,H01M,Y02E

Abstract:
1. An alkali-metal ion-reversible electrode material comprising an alkali-based complex oxide of the general formula A a M m Z z O o N n F f wherein: A comprises an alkali metal selected from the group consisting of lithium, sodium, and potassium; M comprises at least one transition metal, and optionally at least one non-transition metal, or mixtures thereof; Z comprises at least one non-metal; O is oxygen; N is nitrogen; and F is fluorine; and wherein said alkali-based complex oxide comprises a conductive carbon coating in a non-powdery form on a surface thereof, said conductive carbon coating being effective to obtain a regular electric field distribution on the surface of said alkali-based complex oxide; and wherein the coefficients a, m, z, o, n, and f>0 and are selected to ensure electroneutrality, and to avoid oxidation of said conductive carbon coating during deposition thereof on said surface.