Determination of the deterioration factor of the electrode catalyst based on the quantitative evaluation of the metallic cohesoivie characteristics
| Project/Area Number |
25820002
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Multi-year Fund |
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| Research Field |
Materials/Mechanics of materials
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| Research Institution | Tohoku University |
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Principal Investigator |
SUZUKI AI 東北大学, 未来科学技術共同研究センター, 助教 (40463781)
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| Project Period (FY) |
2013-04-01 – 2015-03-31
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| Project Status |
Completed (Fiscal Year 2014)
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| Budget Amount *help |
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2014: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
Fiscal Year 2013: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
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| Keywords | 凝集性 / 金属 / 量子化学 / 電極触媒 / 経時劣化 / d電子 / 主量子数 / 軌道 / d軌道 / 3d, 4d, 5d / 自己拡散 / 金属内部結合エネルギー / 量子化学計算 / 触媒設計 / 耐久性 |
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| Outline of Final Research Achievements |
The magnitude of the intra metallic bond energy in the 3d, 4d, and 5d metal crystallites shaped like volcano and nearly symmetric at the elements of half-filled d-electrons elements(Mn, Tc and Re). It showed the analogy with the quantitative degree of the cohesive energy, Tammann temperature, surface energy, and activation energy for self-diffusion of 3d, 4d and 5d metal elements. The intra-metallic binding energy correlated well with various cohesive properties. When the cohesive energy, surface energy, and Tammann temperature is lower, the intra-metallic binding energy in the solid crystallites becomes weaker, and vice versa. Deterioration of electocatalysts and electrolyte were reflected in the calculation of current-voltage calculation, and time profile of power generation could be obtained which was comparative accuracy with the durability experiments.
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Report
(3 results)
Research Products
(21 results)
