2023 Fiscal Year Research-status Report
New method for preparation of nanoparticles of high entropy metal nitrides for future energy applications
| Project/Area Number |
22K04687
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| Research Institution | Shimane University |
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Principal Investigator |
Pham Hoang.Anh 島根大学, 学術研究院理工学系, 准教授 (60750213)
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| Co-Investigator(Kenkyū-buntansha) |
森戸 茂一 島根大学, 学術研究院理工学系, 教授 (00301242)
北川 裕之 島根大学, 学術研究院理工学系, 准教授 (00325044)
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| Project Period (FY) |
2022-04-01 – 2025-03-31
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| Keywords | Metal nitride / Nanoparticle / Plasma synthesis / High entropy nitride / Catalyst / Energy / Thermal Plasma |
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| Outline of Annual Research Achievements |
Plasma emission spectrum was measured, and the plasma temperature was estimated. Pure metal powders of Ti, Cr, V, and Fe was used for synthesis of TiN, CrN, and FeN nanoparticles, respectively. The parameters were optimized for synthesis of the metal nitride nanoparticles with cubic NaCl structure. The electrochemical properties of the nanoparticles were evaluated. The samples of CrN and FeN showed excellent catalyst properties comparable with that of Pt.
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| Current Status of Research Progress |
Current Status of Research Progress
3: Progress in research has been slightly delayed.
Reason
The power of the RF thermal plasma system was only 6 kW. Low plasma power makes it difficult to optimize the feeding rate for fully vaporization of refractory nitride powders like TiN or AlN
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| Strategy for Future Research Activity |
The research aim is to synthesis high entropy nitride nanoparticles from the mixture of pure metal powders. The approach was chosen to overcome the difficulty in achieving full vaporization of refractory nitride as raw powder for the current 6 kW RF thermal plasma system. The raw metal powders are mixed by using planetary ball milling. RF thermal plasma is used for synthesis of the nanoparticles from the mixture of powders. Crystal structure, quantity, and size of the synthesized nanoparticles will be quantitatively analyzed by XRD, SAXS, and SEM/TEM.
Electrochemical properties of the high entropy nitride nanoparticles will be evaluated.
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| Causes of Carryover |
Delivery schedule of Nb metal powder was delayed so that the purchase could not be made within the fiscal year.
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