通过简单的PDMS表面改性提高摩擦纳米发电机的性能

摩擦电纳米发电机作为一种新型的能量收集和转换装置，在各个研究领域受到了广泛的关注。然而，由于制备面积小、工艺复杂、价格昂贵等问题，阻碍了对摩擦材料表面进行物理改性以增加有效接触面积。本文提出了一种简单的方法来复制用于在聚二甲基硅氧烷(PDMS)表面构建微纳结构的盐雾模板的表面形态，然后将其制成垂直接触分离TENG并用于金属的阴极保护。TENG具有良好的输出性能，短路电流为26 μA，输出电压为600 V，表面电荷密度为125 μC m2。该系统具有良好的供电能力，在商用电子设备供电方面具有良好的应用前景。成功地将TENG应用于阴极保护。电化学测量表明，与304不锈钢裸材(304SS)相比，304SS与TENG耦合后的开路电位降约为190 mV，防腐效果显著。结果表明，该材料在自供电防腐方面具有很大的应用潜力。

Triboelectric nanogenerators (TENGs), as a novel energy harvesting and conversion apparatus, have garnered widespread attention across diverse research fields. However, issues including small preparation area, complex fabrication processes, and high manufacturing cost have hindered the physical modification of tribomaterial surfaces to increase the effective contact area. This work proposes a facile method to replicate the surface morphology of a salt spray template for constructing micro/nanostructures on polydimethylsiloxane (PDMS) surfaces, which is then fabricated into a vertical contact-separation TENG for cathodic protection of metals. The as-fabricated TENG exhibits excellent output performance, with a short-circuit current of 26 μA, an output voltage of 600 V, and a surface charge density of 125 μC·m⁻². This system demonstrates outstanding power supply capacity, showing promising application prospects in powering commercial electronic devices. The TENG is successfully applied for cathodic protection. Electrochemical measurements reveal that compared with bare 304 stainless steel (304SS), the open-circuit potential of 304SS coupled with the TENG decreases by approximately 190 mV, resulting in a remarkable anticorrosion effect. The results demonstrate that this material holds great application potential in the field of self-powered anticorrosion.