【摘要】 智能产业的飞速发展带动了对轻量化、高灵敏、快响应传感器的需求，然而复杂的材料组成和制备工艺阻碍了其实际应用。开发了一种基于三维碳纳米纤维（CNF）/还原氧化石墨烯（rGO）复合气凝胶的压阻式压力传感器，采用冰模板法和冻干技术使其成型，通过改变聚丙烯腈（PAN）/氧化石墨烯（GO）配比以及碳化温度调控复合气凝胶的导电性和压力灵敏度。当PAN纳米纤维和GO质量比为1∶1、碳化温度为400℃时，其压力传感灵敏度最高，在0～8 kPa和8～21 kPa的范围内分别为0.336和0.183 kPa^-1。另外，该压力传感器在不同大小压力、不同压缩频率和长时间压缩循环下还表现出了优异的稳定性。这种轻质、弹性的气凝胶传感器为高性能电子器件的快速制备提供了新思路，在健康管理、运动检测、人机交互等方面具有广泛的应用前景。更多还原

【Abstract】 The rapid development of the intelligent industry has driven the demand for lightweight, highly sensitive, fast response sensors. Nevertheless, the complex materials composition and sophisticated preparation process hinder the practical applications. Herein, a piezoresistive pressure sensor based on three-dimensional carbon nanofibers（CNF）/reduced graphene oxide（rGO） composite aerogel was proposed, which was fabricated by ice template method and freeze-drying technology. The conductivity and pressure sensitivity of the composite aerogel could be regulated by changing the ratio of polyacrylonitrile（PAN）/graphene oxide（GO） and carbonization temperature. When the mass ratio of PAN nanofibers to GO is 1∶1 and the carbonization temperature is 400 ℃, the sensitivity of the pressure sensor is highest, which is 0.336 kPa^-1 in the range of 0-8 kPa and 0.183 kPa^-1 in the range of 8-21 kPa. In addition, the pressure sensor also shows stability under different compression frequencies, different pressures and long-term compression cycles. This lightweight, elastic aerogel sensor provides a new strategy for the rapid preparation of high-performance electronic devices, which has a wide application prospect in healthcare, motion detection and human-machine interaction.更多还原