| Budget Amount *help |
¥3,380,000 (Direct Cost: ¥2,600,000、Indirect Cost: ¥780,000)
Fiscal Year 2017: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2016: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2015: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
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| Outline of Final Research Achievements |
Enhanced activity for oxygen reduction reaction of Pt catalyst loaded on the partially reduced TiO2-SnO2 mixed oxides was found to be originated not only from the interaction between Pt catalyst and lower oxidation state of Ti, i.e., Ti3+, but also from the electron supply effect through carbon supports. The obtained Pt catalyst loaded on partially reduced TiO2-SnO2 mixed oxides showed fairly high specific activity: oxygen reduction activity per specific surface area. The trivalent titanium-derived amorphous precursor of TiO2-SnO2 showed peculiar crystal growth, i.e., the precursor pre-calcined at 250 oC showed obvious crystal growth under following hydrothermal treatment at lower temperature of 150 oC. This finding was applied for preparing Pt/TiO2-SnO2 catalyst and the obtained catalyst showed higher specific activity for oxygen reduction reaction.
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