2022 Fiscal Year Annual Research Report

Design and development of flexible piezoelectric/magnetostrictive composite materials and development of energy harvesting IoT systems

Research Project

Project/Area Number	21J10839
Research Institution	Tohoku University
Research Fellow	王真金東北大学, 環境科学研究科, 特別研究員(PD)
Project Period (FY)	2021-04-28 – 2023-03-31
Keywords	Composite manufacturing / Spin coating / Piezoelectric composite / Energy-harvesting
Outline of Annual Research Achievements	This year, I continued to study the flexible piezoelectric composites for energy-harvesting. Barium titanate (BaTiO3, BTO) and poly (vinylidene fluoride-trifluoroethylene) copolymers (P(VDF-TrFE)) were used to create a functionally graded, flexible piezoelectric material. The new production method increases output voltage during bending by 15 times and increases figure of merit (FoM) by 3.2 times. This study proposes a novel method for utilizing piezoelectric material to extract energy from human motion. I composed an academic paper based on these findings and submit it to a academic journal; the manuscript is currently undergoing review. In addition, I have attended international and domestic conferences and presented the most recent findings of this study to other researchers.
Research Progress Status	令和4年度が最終年度であるため、記入しない。
Strategy for Future Research Activity	令和4年度が最終年度であるため、記入しない。