Publications논문

Synergistic effect of microscopic buckle and macroscopic coil for self-powered organ motion sensor 새 글 수정됨
2024-11-28 13:35:47 조회수19
Hyeon Jun Sim, Juwan Kim, Wonkyeong Son, Jae Myeong Lee, Dong Yeop Lee, Young-Jin Kim, Young-Kwan Kim, Seon Jeong Kim, Jae-Min Oh, Changsoon Choi Department of Energy and Materials Engineering, Dongguk University-Seoul, Seoul 04620, South Korea Department of Electronic Engineering and Biomedical Engineering, Hanyang University, Seoul 04763, South Korea 원문 링크 : https://doi.org/10.1016/j.nanoen.2024.109889

Abstract

 Although soft mechano-electrochemical energy harvesters have attracted considerable attention as wearable sensors, they face challenges, including low output performance, high Young’s modulus and low energy-conversion efficiency. To address these limitations, we introduce a novel design featuring macroscopically coiled and microscopically buckled fibres to improve the mechano-electrochemical energy-harvesting capability, thereby maximising capacitance change and affording higher electrical output. The harvester achieved a gravimetric peak current density of 121 A/kg and a peak power density of 16 W/kg. Moreover, the harvester showed enhanced stretchability under a strain of over 400 %, low Young’s modulus of 0.2 MPa and an energy conversion efficiency of 0.33 %. Furthermore, when implanted in a pig’s bladder, it showed minimal impact during expansion and contraction thanks to its softness and provided real-time electrical output in response to static and dynamic volume changes.

 
사이트맵 닫기