2023 Fiscal Year Research-status Report
Protection Against Water-Induced Short-Circuit Failures of Electronics with Cellulosic Polymer Coating and Its Practical Applications
| Project/Area Number |
22KJ2188
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| Allocation Type | Multi-year Fund |
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| Research Institution | Osaka University |
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Principal Investigator |
LI CHENYANG 大阪大学, 工学研究科, 特別研究員(DC1)
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| Project Period (FY) |
2023-03-08 – 2025-03-31
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| Keywords | cellulose nanofibers / electrochemistry / circuit protection / electrophoresis |
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| Outline of Annual Research Achievements |
In the second year of this project, the mechanism of using cellulose nanofiber coatings in prevention against short-circuit failure was clarified. The water drop test revealed that the water absorption and swelling ability of cellulose nanofiber coating layers, along with their zeta potential, are pivotal factors in preventing short-circuit failures of electrode coating materials. Besides, the adhesion and flame resistance of cellulose nanofiber films as copper-electrode sealing layers for safe, high-performance electronics were assessed. In addition to using cellulose nanofibers’ electrophoretic properties for short-circuit prevention, we investigated fundamental aspects of their deposition behavior this year. Our focus included the chemical and structural characteristics of electrophoretically deposited cellulose hydrogels, as well as the process of preparing transparent films from these gels.
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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
Following the research plan, this year we focused on conducting research to evaluate the electrochemical inhibition performance of selected cellulosic materials and conducting practical functional tests as coating layers for electronic devices. The research outcomes exceeded expectations, and the findings have been summarized for conference presentations and journal submissions. Therefore, this project is generally progressing well.
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| Strategy for Future Research Activity |
For the next year, we will investigate a deeper understanding of the electrophoretic deposition behavior of cellulosic materials. Additionally, we will explore applications related to the electrophoretic properties of these materials.
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| Causes of Carryover |
Based on the research topic, two articles were summarized this year. However, one has not yet been edited for English. The funds allocated for this purpose will be saved and used for English editing services next year.
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