2021 Fiscal Year Final Research Report
Visualization of reaction sites and higher output of direct carbon fuel cells using carbon marker
| Project/Area Number |
19K04234
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Review Section |
Basic Section 19020:Thermal engineering-related
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| Research Institution | Ritsumeikan University (2021)
Tokyo Institute of Technology (2019-2020) |
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Principal Investigator |
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| Project Period (FY) |
2019-04-01 – 2022-03-31
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| Keywords | 燃料電池 |
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| Outline of Final Research Achievements |
The mechanisms of power output of a direct carbon fuel cell (DCFC) was studied by correlation with impedance spectroscopy and char observation, focusing on char, which was the fuel of DCFC, was visible. Image analysis of the solidified carbon/carbonate-packed bed showed that the contact area between carbon and the anode linearly increased, resulting in an increase in the power output of the DCFC. It was shown that the contact between carbon and the anode was played an important role in the DCFC power output. In addition, DCFC based on solid oxide fuel cell was developed. Carbon position in the Ni/YSZ anode influenced the power output. An atomic-scale phenomena around the Ni/YSZ interface acting as the reaction site were observed by using first-principles calculation for higher and more stable power output.
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| Free Research Field |
熱工学
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| Academic Significance and Societal Importance of the Research Achievements |
固体燃料であるチャーを直接燃料とできるDCFCの発電メカニズムは十分に明らかにされておらず，電極設計指針が確立されていない状況にある．本研究で得られた成果はDCFCの電極設計指針を与える知見であり，燃料電池の可能性を拡げるとともに，石炭やバイオマスといった固体燃料のエネルギー転換の高性能化に資することが期待される．
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