MAGNELI PHASE TITANIUM OXIDE WITH HIGH SPECIFIC SURFACE AREA AND THE FABRICATION METHOD THEREOF

摘要

PURPOSE: A magneli phase titanium oxide with a high specific surface area is provided to secure 35 wt% or more of a metal loading amount due to the high specific surface area and have excellent electric conductivity, high-voltage durability, and a high corrosive resistance under an oxygen atmosphere. CONSTITUTION: A magneli phase titanium oxide has a specific surface area in the range of 3-50m^2/g. The titanium oxide contains 80 wt% or more of Ti4O7 and Ti5O9. The titanium oxide further contains non-stoichiometric titanium oxide of TikO2k-(1+2l)(k is a natural number, wherein 4=k=10, and l is a natural number, wherein 1=l=(k-1)). Nanopores are formed in the titanium oxide and the average diameter of the nanopores is in the range of 10-20nm. The titanium oxide has a surface area where multiple pores are distributed. The thickness of the surface area is in the range of 10-40% based on the radius(R) of the titanium oxide particles. A metal loading amount of the titanium oxide is 35 wt% or greater. The catalyst for the fuel cell contains the magneli phase titanium oxide. [Reference numerals] (AA,CC) MPTO of the present invention; (BB,DD) Existing MPTO