多孔海绵状FexCo1 - xP纳米结构和MXene注入自驱动柔性纺织基个人热调节装置

A low-power-consuming, self-powered wearable personal thermal management (PTM) device could minimize our reliability on external power sources. Herein, we describe the fabrication of a self-powered PTM device providing thermotherapy that can be wirelessly heated, with warmth preservation and heat produced via the triboelectric effect. Initially, ferromagnetic porous spongy Fe\u003csub\u003ex\u003c/sub\u003eCo\u003csub\u003e1−x\u003c/sub\u003eP nanostructures were synthesized uniformly over the surface of woven Kevlar fiber (WKF). Synthesized MXene was then dispersed in polydimethylsiloxane (PDMS) and prepared as a composite with WKF/Fe\u003csub\u003ex\u003c/sub\u003eCo\u003csub\u003e1−x\u003c/sub\u003eP. The combined effect of MXene and Fe\u003csub\u003ex\u003c/sub\u003eCo\u003csub\u003e1−x\u003c/sub\u003eP resulted in very effective Joule heating (74°C at 3 V), and the ferromagnetic behavior of the composite induced wireless heating. The dense interrelated porous structure created by MXene incorporation helped to maintain body warmth (an enhancement of 40.1% compared with bare WKF/PDMS) by reflecting almost all of the infrared radiation (97.7%) back to the body. The composite also exhibited high impact resistance (131.4% compared with WKF/PDMS) for use as smart body armor. Additionally, the PTM device exhibited a maximum power density of 1.3 mW cm\u003csup\u003e−2\u003c/sup\u003e at a low impact frequency of 5 Hz and was capable of harvesting energy from human motion and wind, indicating a potential self-heating ability of the PTM composite.