STEAM REFORMING CATALYST, AND FUEL CELL SYSTEM USING SAME

A steam reforming catalyst that promotes production of hydrogen from a gas containing a hydrocarbon in the presence of steam includes a carrier and two or more catalyst metals supported on the carrier and including a first metal and a second metal. The first metal includes Ni, the second metal includes at least one of Co and Ru, and the carrier is represented by LaNbO or LaSrNbO where x is in a range of 0 < x ≤ 0.12.