Patent ID: 8025861
Filing Date: 2011-09-27
Classification: C01G,C01P,H01M,Y02E

Abstract:
1. A method of making catalyst support particles comprising: co-dispersing compounds of titanium and a salt or alkoxide of a dopant element as solutes or a sol in a liquid alcohol or water/alcohol_medium, the dopant element being selected to enhance the electrical conductivity of the catalyst support particles; dispersing insoluble pore-forming particles in the liquid alcohol or water/alcohol medium using ultrasonic vibration of the medium, the pore-forming particles being no larger than about twenty nanometers in largest dimension; precipitating the dispersed compounds of titanium and dopant element on the pore-forming particles; separating the precipitate from the liquid alcohol or water/alcohol medium; heating the precipitate in a controlled atmosphere to form crystalline, dopant element-containing titanium dioxide particles; and removing the embedded pore-forming particles from the crystalline, dopant element-containing titanium dioxide particles to leave surface-area increasing internal and external pores in the crystalline, dopant element-containing titanium dioxide particles.