Patent ID: 6592782
Filing Date: 2003-07-15
Classification: B01D,B01J,C01B,C01C,H01M,Y02E,Y02P,Y10S

Abstract:
A mixed electronic- and ionic-conducting metal oxide represented by the formula:AxAâ€²xâ€²Aâ€³2-(x+xâ€²)ByFeyâ€²Bâ€³2-(y+yâ€²)O5+z wherex and xâ€² are greater than 0; y and yâ€² are greater than 0; x+xâ€² is less than or equal to 2; y+yâ€² is less than or equal to 2; z is a number selected to make the metal oxide charge neutral; A is an element selected from the f block lanthanide elements; Aâ€² is an element selected from Be, Mg, Ca, Sr, Ba and Ra; Aâ€³ is an element selected from the f block lanthanides or Be, Mg, Ca, Sr, Ba and Ra; B is an element selected from the group consisting of Al, Ga, In or mixtures thereof and Bâ€³ is Co or Mg, with the exception that when Bâ€³ is Mg, Aâ€² and Aâ€³ are not Mg.