A second catalyst which is supported on an inorganic oxide carrier has a preferential oxidation reaction for CO, so that it prevents catalyst poisoning by CO and thus improves the life-span of the fuel cell.
It is preferable that the mixture ratio of the Pt and the metal on the first and the second catalysts is in a weight ratio ranging from 1:0.1 to 1:0.5, and more preferably 1:0.4 to 1:0.5.
An electrode for a fuel cell was fabricated by the same method as in Example 1, except that a catalyst where Pt was supported on the carbon carrier in a weight ratio ranging from 1:0.5 was used.
The electrodes fabricated in Example 1 and Comparative Example 1 were tested using a rotating disk electrode. Electrochemical measurements were performed in a three electrode-one compartment glass cell. The counter electrode was a platinum foil and the reference electrode was Ag/AgCl. Methanol was added to a 0.5 M H2SO4 electrolyte to artificially produce carbon monoxide. The current density was measured at 0.6 V (SHE) with time and the measurement results shown in FIG. 2.
As shown in FIG. 2, the fuel cell electrode according to Example 1 of the present invention shows an improved performance over that of Comparative Example 1, since the CO bound to the catalyst is easily detached from the catalyst during operation of the fuel cell.
In December 2009, SB LiMotive, a joint venture between South Korea's Samsung SDI and Germany’s Robert Bosch, announced plans to invest 500 billion won (some $410 million) in an electric vehicle battery plant by 2015.
The new plant, which will be built in the southeastern city of Ulsan, South Gyeongsang Province, will produce secondary batteries used in hybrid electric vehicles from 2011. The joint venture is targeting a 30 percent share in the global auto battery market by 2015.