Patent ID: 7457018
Filing Date: 2008-11-25
Classification: C01B,C01P,H01G,H01M,Y02E,Y10T

Abstract:
1. A material comprising particles, the particles comprising a core and a carbon deposit on the core, wherein the core comprises at least one compound of the formula Li x M 1-y M′ y (XO 4 ) n , wherein x, y and n are numbers such that 0≦x≦2, 0≦y≦0.6, and 1≦n≦1.5, M is a transition metal or a mixture of transition metals from the first period of the periodic table, M′ is an element with fixed valency selected from the group consisting of Mg 2+ , Ca 2+ , Al 3+ , and Zn 2+ , X is S, P or Si, and wherein the conductivity of the material is greater than 10 −8 S.cm −1 , measured on a sample of powder compressed at a pressure greater than or equal to 3000 Kg.cm −2 .