An additive-free β-phase porous poly(vinylidene fluoride) (PVDF) aerogel with high electron affinity was successfully prepared through a simple solvent exchange method. The as-prepared additive-free PVDF aerogel shows high output performance when used as a triboelectric layer in a triboelectric nanogenerator (TENG). High output performance with an open-circuit voltage (V_oc) of 90 V and a short-circuit current (I_sc) of 15 μA are obtained under a periodic stress of 16 N (0.08 MPa) at a frequency of 10 Hz, and the calculated power density is 6.15 W m⁻², which represents an 8.2-fold enhancement compared to TENGs based on non-aerogel PVDF. The TENG based on the β-phase PVDF aerogel can light up 30 blue LEDs. Furthermore, the prepared TENG can also be used as a self-powered motion sensor with high sensitivity. The non-crosslinked PVDF aerogel has the potential to be used for high-performance TENG and self-powered sensing applications. This research provides preliminary insights into the application of porous non-crosslinked polymer aerogels in the field of energy harvesting.

中文翻译：

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基于多孔β相聚偏二氟乙烯气凝胶的高效连续摩擦发电

通过简单的溶剂交换方法成功地制备了具有高电子亲和力的无添加剂β相多孔聚偏二氟乙烯（PVDF）气凝胶。制备的无添加剂PVDF气凝胶在用作摩擦电纳米发电机（TENG）的摩擦电层时显示出高输出性能。在16 N（0.08 MPa）的周期性应力和10 Hz的频率下，在90 N的开路电压（V _oc）和15μA的短路电流（I _sc）下获得了高输出性能，并且计算出的功率密度为6.15 W m ^-2，与基于非气凝胶PVDF的TENG相比，代表了8.2倍的增强。基于β相PVDF气凝胶的TENG可以点亮30个蓝色LED。此外，准备好的TENG也可以用作具有高灵敏度的自供电运动传感器。这种非交联的PVDF气凝胶有潜力用于高性能TENG和自供电传感应用。这项研究为多孔非交联聚合物气凝胶在能量收集领域的应用提供了初步见识。