期刊
APPLIED ENERGY
卷 206, 期 -, 页码 150-158出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.apenergy.2017.07.109
关键词
Inexpensive fabrication; Sandpaper template; Micro-structured PDMS; Human skin; Triboelectric generator
资金
- Technology Innovation Program - Ministry of Trade, Industry & Energy (MI, Korea) [10065696]
- Korea Evaluation Institute of Industrial Technology (KEIT) [10065696] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
This paper reports a sandpaper based inexpensive and simple fabrication process of functional micro-structured PDMS (Polydimethylsiloxane) film to be used as a triboelectric layer. The micro-structured PDMS film was replicated directly from the low surface energy sandpaper template without the use of any surfactant coating, high vacuum or high-pressure equipment. A human skin and PDMS interaction based triboelectric generator (TEG) is demonstrated using as-fabricated micro-structured PDMS film. In our proposed TEG harvester, electrical energy is produced by continual contact-separation processes between PDMS and human skin. Four different micro-structures were compared with flat film and the influences of surface structures on the electrical output of the harvester are systematically studied. Results show that the existence of micro-structures on the PDMS films effectively enlarges the contact area and provides more surfaces for charge storage and hence improve the output performance of TEG. The as-fabricated prototype can produce peak-peak open-circuit voltage up to 103 V and 4.8 mW/m(2) of peak power density, which is exceptionally attractive for the fabrication of self-powered and portable devices. This stable PDMS film with functional micro-structures, which is fabricated using reusable sandpaper template facilitates robust and large-scale fabrication, and has potential for future applications in triboelectric energy harvesting devices.
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