基于电致变色机制的红外调控纤维设计与多维度光电化学传输行为研究

基于电致变色原理的红外调控纤维(红外电致变色纤维)兼具红外辐射可控性与一维结构优势，是织造智能热(辐射)管理服装的关键结构基元，更是实现人体热舒适与单兵自适应伪装所迫切需要的光电器件体系。但在传统电致变色纤维多层结构中，可见光透明的外功能层会显著影响红外光的传输光路，纤维材料及结构与红外光学传输行为难以兼容；电子在轴向长程传输过程中过度损耗，引起径向电化学反应大幅减弱，导致纤维器件所展现的可控变色长度普遍只有厘米级。本项目拟将皮芯纤维结构与平行电极结构有机结合，通过高红外调控特性低维碳纳米材料的研制，借助纤维内部异质界面设计以及轴向‒径向‒周向空间方向上离子‒电子‒光子传输动力学的研究，实现纤维形态红外光学‒电化学调控特性的高效表达与长程可控，获得红外电致变色连续纤维的关键构建策略，为衔接后续纺织加工，实现大面积热辐射管理织物的产业化应用提供坚实的基础。

Electrochromism-based infrared tunable fibers (i.e., infrared electrochromic fibers) with infrared modulation capability and one-dimensional structure are not only the basic building blocks of smart management thermal clothing for human radiation, but also one kind of urgently required optoelectronic devices for thermal comfort and adaptive camouflage of the human body. However, in the multilayer structure of traditional electrochromic fibers, the outer functional layers show visible transparency, yet will significantly influence infrared light transmission. The fiber materials and structures are not compatible with the infrared optical transport behavior. Additionally, during the axial long-range transport process, excessive loss of electrons will weaken the radial electrochemical reaction, resulting in a short controllable electrochromic length of fibers in a centimeter scale. To address these issues, the sheath-core and parallel-electrode structures will be combined to construct the infrared electrochromic fibers in this project. Meanwhile, low-dimensional carbon nanomaterials with high-performance infrared tunable features will be introduced as the functional sheath layer. With the design of heterogeneous interfaces and the study of ion-electron-photon transport behaviors in axial-radial-circumferential directions, long-range controllable fiber will be realized and show efficient infrared optical-electrochemical characteristics. Moreover, the critical strategy will be obtained to continuously construct the infrared electrochromic fibers, advancing the implementation of weaving technology of textile and the industrialization application of large-area thermal radiation management fabrics.