| Budget Amount *help |
¥25,480,000 (Direct Cost: ¥19,600,000、Indirect Cost: ¥5,880,000)
Fiscal Year 2018: ¥8,190,000 (Direct Cost: ¥6,300,000、Indirect Cost: ¥1,890,000)
Fiscal Year 2017: ¥8,190,000 (Direct Cost: ¥6,300,000、Indirect Cost: ¥1,890,000)
Fiscal Year 2016: ¥9,100,000 (Direct Cost: ¥7,000,000、Indirect Cost: ¥2,100,000)
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| Outline of Final Research Achievements |
Development of the polymer electrolyte fuel cell (PEFC) operative under wider temperature as well as the lower humidity condition was carried out. In this project, new polymer electrolyte membrane based on polybenzimidazole (PBI) was developed. The PBI was grafted with the sulfonic acid side chains. We found that the increase of the graft distance increase the proton conductivity due to the effective hopping of the proton, which is promising for the high temperature and low humidity operation. The polymer was introduced into the electrocatalyst by taking advantage of the strong adsorption onto the carbon surface. The PBI grafted with sulfonic acid was coated onto the carbon black to offer the proton-conductive carbon black, which was new concept. After loading Pt on the new proton-conductive carbon black, we successfully fabricated the all-PBI based single cell. We found the cell was promising for the next generation operation.
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