808 フレキシブル織物ハーベスタに応用する高分子発電素子の構造設計と作製(OS8-(2)オーガナイズドセッション《マイクロマシンとG-MEMS/N-MEMS》)

Abstract

This study is aiming to design and fabricate a prototype polymeric-generator applied to flexible self-powered fabric. The prototype is integrated with piezoelectric polymeric nanofibers obtained by electrospinning, and the polymeric electrode array which micro-fabricated using MEMS technology. In stead of large-scale energy harvesting from wind, hydro, solar and so on, the expected polymeric generator is possible to harvest wasted energy from human personal motions such as walking, typing, speaking and breathing. In order to improve the capacity of harvested electricity and overcome the drawbacks of easily being broken, two aspects are considered: a) Using inter-digitated electrode array to instead the single electrode and b) Using polymeric materials to make flexible nanofibers for energy harvesting purpose. Therefore, Poly vinylidene fluoride (PVDF) is chosen to electrospin nanofibers, because of its flexible and piezoelectric properties; Poly (3, 4-ethylenedioxy thiophene) /poly (4-styrenesulfonate) [PEDOT/PSS] is selected to manufacture inter-digitated electrode array using MEMS technologies. Thereafter, the two sections are integrated together to form the prototype generator. The prototype generator, comprised of inter-digitated electrode array and hundreds of aligned nanofibers, is expected to be capable of enlarging the electricity output in both of voltage (about 10-30 V) and electric current (about 10-30 mA).