셀룰로오스 폴리머 기반 다기능 복합 필름을 사용한 유연한 열전 및 압전 하이브리드 에너지 하베스터 개발

• 영문명: Flexible Thermoelectric and Piezoelectric Hybrid Energy harvester by Adopting a Multifunctional Cellulose-based Composite Film
• 발행기관: 한국세라믹학회
• 저자명: 배빛나(Bitna Bae) 김철민(Cheol Min Kim) 백창연(Changyeon Baek) 이민구(Min-Ku Lee) 이경자(Gyoung-Ja Lee) 박귀일(Kwi-Il Park)
• 간행물 정보: 『세라미스트』제27권 제3호, 335~346쪽, 전체 12쪽
• 주제분류: 공학 > 화학공학
• 파일형태: PDF
• 발행일자: 2024.09.30

국문 초록

Thermoelectric (TE) and piezoelectric (PE) energy harvesting are the most advantageous conversion mechanisms for converting energy generated by the human body into electrical energy, respectively. However, the development of a hybrid energy harvester is essential for achieving high energy conversion efficiency since a single energy harvester cannot convert enough energy. Herein, we present a flexible TE-PE hybrid energy harvester (f-TPHEH) based on a self-assembled single film consisting of Bi2Te2.7Sn0.3 particles, BaTiO3 nanoparticles, and cellulose. The fabricated f-TPHEH exhibited a maximum TE output power of 18.47 nW and a PE instantaneous output of 13.5 nW under integrated thermal and bending conditions (ΔT = 40 K, bending displacement = 7 mm). We conducted a theoretical analysis using multiphysics simulation based on finite element analysis to support the experimental measurements of the fabricated f-TPHEH. In addition, to demonstrate the mechanical stability of the cellulose matrix-based f-TPHEH, a durability test was performed up to 5,000 cycles of bending deformation. This study presents a method for developing the flexible hybrid energy harvester using a low-cost and simple fabrication process.

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CONFLICTS OF INTEREST

ACKNOWLEDGEMENTS

REFERENCES

키워드

Biocompatibility Cellulose Energy harvesting Flexible Piezoelectric Thermoelectric