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首页> 外文期刊>Advanced functional materials >Abrasion and Fracture Self-Healable Triboelectric Nanogenerator with Ultrahigh Stretchability and Long-Term Durability
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Abrasion and Fracture Self-Healable Triboelectric Nanogenerator with Ultrahigh Stretchability and Long-Term Durability

机译：Abrasion and Fracture Self-Healable Triboelectric Nanogenerator with Ultrahigh Stretchability and Long-Term Durability

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摘要

Since triboelectrification results from materials in physical contact, the durability of triboelectric nanogenerators (TENGs) must be improved. However, it still poses challenges to continuously repair surface abrasion even when self-healable materials are introduced. In this study, an ultrastretchable TENG (US-TENG) that simultaneously heal the fracture and abrasion at room temperature is fabricated. By incorporating hydrogen bonds and dynamic metal-ligand coordination into polydimethylsiloxane chains, the synthesized elastomers possess ultrahigh stretchability (10 000%) and remarkable self-healing property (100% efficiency) at room temperature. Working in contact-separation mode, the electrical outputs with 2 x 2 cm(2) area can reach 140 V, 40 nC, 1.5 mu A, respectively. Besides, the US-TENG shows a stretchability of 1800% with high electrical outputs. Even if it is stretched to break or scratched to wear out, it can recover its electrical outputs in 20 min and 2 h at room temperature, respectively. Finally, the application of the US-TENG as flexible power sources and self-powered pressure sensors is demonstrated. This designed strategy with ultrahigh stretchability and excellent self-healing properties can meet the wide applications of flexible and wearable electronics for long-term use.

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