Taking advantages of renewable resourced materials in the preparation of multifunctional aerogel fibers which integrate thermal insulation, piezoelectric and moisture electric generation could be a promising way of relieving pressure on both energy loss and generation. A series of chitosan-konjac glucomannan (CS-KGM) aerogel fibers was obtained by means of wet-spinning method followed by freeze-drying. The CS-KGM aerogel fibers with submicron porous morphology exhibit excellent thermal insulation performance. Single layer of CS-KGM aerogel fiber with only a thickness of 0.6 mm shows a thermal insulation temperature difference of 23 °C. A stable piezoelectric output voltage of 0.35 V can be generated from a single CS-KGM aerogel fiber during a 500 press-release cycle attributing to the intrinsic piezoelectricity of CS and the porous structure. Single aerogel fibers were coated with multi-walled carbon nanotubes as a way to prepare conductive aerogels. Meanwhile, the moisture electric output voltage can be as high as 160 mV and last for >8 h at 60% relative humidity for CS-KGM single aerogel fiber assisted by a thin layer of carbon nanotube coating. Overall, CS-KGM aerogel fibers prepared in this work has good compatibility and potential applications in thermal management and energy harvesting from low density resource, which provides a new strategy for the preparation of sustainable and multifunctional wearable materials.

利用可再生资源材料制备集隔热、压电和湿气发电于一体的多功能气凝胶纤维，可能是缓解能源损失和发电压力的一种有前景的方法。采用湿纺法冷冻干燥得到一系列壳聚糖-魔芋葡甘聚糖具有亚微米多孔形态的CS-KGM气凝胶纤维表现出优异的隔热性能。单层厚度仅为0.6毫米的CS-KGM气凝胶纤维的隔热温差为23℃。由于CS的固有压电性和多孔结构，单根CS-KGM气凝胶纤维在500次新闻发布周期内可以产生0.35 V的稳定压电输出电压。将单根气凝胶纤维涂上多壁碳纳米管作为制备导电气凝胶的一种方法。同时，在薄层碳纳米管涂层辅助下，CS-KGM单根气凝胶纤维的湿气电输出电压可高达160 mV，并在60%相对湿度下持续>8小时。总体而言，本工作制备的CS-KGM气凝胶纤维在热管理和低密度资源能量收集方面具有良好的相容性和潜在应用，为可持续多功能可穿戴材料的制备提供了新策略。