Flexible Silk Fibroin-Based Triboelectric Nanogenerators with Thermal Management Capabilities for Temperature Regulation and Self-Powered Monitoring.
basic_science · Level V
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- Record sourced from PubMed, PMID 39602827.
- Also identified by DOI 10.1021/acs.nanolett.4c05267.
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Abstract
Flexible triboelectric nanogenerators (TENGs) are highly advantageous for human-centered monitoring due to their self-sustaining energy and high output performance. However, temperature fluctuations that limit thermal comfort have hindered their practical advancement. In this study, flexible titanium dioxide-silk fibroin@phase change microcapsule nanofiber films (TiO<sub>2</sub>-SF@PCM NFs) were successfully developed using an efficient electro-blown spinning (EBS) technique, with exceptional triboelectric output and superior temperature regulation capabilities. Our design achieved cooling effects of approximately 10 °C and provided thermal insulation of about 2.2 °C. Notably, applying the TiO<sub>2</sub>-SF@PCM NFs to a model car produced an impressive cooling effect of 22 °C. Furthermore, a single-electrode triboelectric sensor based on TiO<sub>2</sub>-SF@PCM NFs achieved a peak output power of ∼272 μW/m<sup>2</sup> and exceptional stability over 1000 output cycles. This study presents a promising strategy for the scalable production of flexible composite nanofiber films, effective in both temperature regulation and self-powered monitoring, highlighting their potential for use as thermal comfort sensors.