2023 Fiscal Year Research-status Report
Energy harvesting by indoor ambient thermal variations
| Project/Area Number |
23K03706
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| Research Institution | Tohoku University |
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Principal Investigator |
グエン・ヴァン トゥアン 東北大学, 工学研究科, 准教授 (30795117)
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| Project Period (FY) |
2023-04-01 – 2028-03-31
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| Keywords | IoT sensing sysems / Energy harvesting / Phase change materials |
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| Outline of Annual Research Achievements |
This research aims to create a novel field that converts the indoor ambient thermal variations into electrical energy. The core technology (thermoelectric generator (TEG)) and basic technology (phase change material (PCM)) are combined to convert the indoor ambient temperature fluctuations into usable electricity as a power source for wireless IoT sensing system. The temperature difference of 0.1oC to 1.0oC is always available (anytime and everywhere) due to temperature changes (between day and night) or air convections (wind, humidity,…), biological heat (people walk near the system) across the TEG by employing PCM which is converted into electricity as an electrical power source for wireless IoT systems. The success of the proposal would open a new scenario of “free from energy” for IoT sensing systems. It means that the energy can be harvested at anytime and anywhere from the ambient temperature fluctuations which can accumulate and store for sensing system.
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| Current Status of Research Progress |
Current Status of Research Progress
2: Research has progressed on the whole more than it was originally planned.
Reason
I'm currently focused on improving thermoelectric materials and refining the fabrication process of thermoelectric generators. I have successfully developed high-performance n-type thermoelectric materials using Bi2Te3 as a base. Our efforts are now directed towards optimizing the p-type thermoelectric material.
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| Strategy for Future Research Activity |
I plan to develop high-performance p-type thermoelectric materials using an electrodeposition method. Through doping ions or embedding nanoparticles into the composite, we anticipate enhancing performance by leveraging the phonon-scattering effect. Additionally, I will utilize micro-fabrication technologies to fabricate micro-thermoelectric generators.
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| Causes of Carryover |
A balance of 205,023円 remained from the previous year due to slight modifications in the experimental process.
This remaining amount will be allocated towards purchasing necessary chemical and consumable materials for this year.
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