2020 Fiscal Year Final Research Report
Precise tuning of electronic state of IrO2 by tailor-made conjugated polymer substrate for water electrolysis
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 |
Review Section |
Basic Section 36020:Energy-related chemistry
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Research Institution | Japan Advanced Institute of Science and Technology |
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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Keywords | OER / Water splitting / Polythiophene / Iridium oxide / Acidic medium |
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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Free Research Field |
Materials Chemistry
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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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