| Project/Area Number |
19K15674
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| Research Category |
Grant-in-Aid for Early-Career Scientists
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| Allocation Type | Multi-year Fund |
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| Review Section |
Basic Section 36020:Energy-related chemistry
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| Research Institution | Japan Advanced Institute of Science and Technology |
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Principal Investigator |
BADAM Rajashekar 北陸先端科学技術大学院大学, 先端科学技術研究科, 講師 (10794670)
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| Project Period (FY) |
2019-04-01 – 2021-03-31
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| Project Status |
Completed (Fiscal Year 2020)
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| Budget Amount *help |
¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000)
Fiscal Year 2020: ¥520,000 (Direct Cost: ¥400,000、Indirect Cost: ¥120,000)
Fiscal Year 2019: ¥3,510,000 (Direct Cost: ¥2,700,000、Indirect Cost: ¥810,000)
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| Keywords | OER / Water splitting / Polythiophene / Iridium oxide / Acidic medium / Water electrolysis / Electronic structure / Nanoparticles |
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| Outline of Research at the Start |
Water electrolysis is one of the cleanest method to produce hydrogen, a clean fuel. Currently IrO2 is used as catalyst to enhance water electrolysis. In our research we tune the electronic structure with the help of organic moieties by changing functional groups with which activity can be improved.
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| Outline of Final Research Achievements |
we have designed and developed a novel catalyst using the fundamentals of organic-inorganic chemistry using a coordination linkage. In this study we have systematically characterized the material that we developed and understood the effect of polymer substrate along with the effect of coordination linkage between IrO2 nanoparticles and polymer substrate with coordination linkages. These linkages act as anchoring sites that will reduce the dissolution of diffusion of nanoparticles over several hours of OER reaction effecting the durability. Alongside we have also found that this coordination linkage efficiently changes the electronic structure of the Ir (IV) catalytic centers. From XPS we found that there is a shift in the electron cloud from the polymer to nanoparticles through coordination bonding. This shift of electrons will modulate the bond length of intermediate ions and help in their easy mass transfer resulting in higher activity, low overpotential and very high durability.
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| Academic Significance and Societal Importance of the Research Achievements |
Our methodology will be effective in developing efficient catalyst for green hydrogen production. Further there will be at least 50% of low Ir loading in our catalyst compared to commercial catalyst that enable cost reduction up to 50% with enhanced activity and durability.
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