The triboelectric nanogenerator (TENG) has been invented as an important mechanical energy harvesting technology, but the further improvement of its triboelectric properties is still required to meet those of practical and functional devices. The tribo-charge surface density of contact materials is considered to be crucial for the performance of TENG. However, currently the enhancement of the tribo-charge surface density is realized either by the physical modification or by the chemical modification of triboelectric surfaces. Here, to maximize the output performance, we introduce a novel post-processed micro-patterned double-network polydimethylsiloxane triboelectric film, in which both chemical modification and physical modification are simultaneously realized in one step along with high controllability, for the first time. With rational selection of monomers and photo-masks, the V_oc and J_sc values of the TENGs are enhanced 17.4 times and the output power is significantly enhanced by ∼189 times compared to the devices without modification. This is associated with the improved surface potential and contact area of the triboelectric layer, leading to enhanced tribo-charge surface density and subsequent enhanced device performance. Moreover, the fabricated TENG exhibits high sensitivity. This design principle offers a universal method to further improve the device performance of TENGs in a low-cost, rapidly yielding way.

中文翻译：

---

摩擦纳米发电机的新型后处理表面改性双网聚合物层

摩擦电纳米发电机（TENG）已被发明为一种重要的机械能收集技术，但仍需要进一步提高其摩擦电性能，才能满足实用和功能性设备的要求。接触材料的摩擦电荷表面密度被认为对TENG的性能至关重要。然而，目前通过摩擦电表面的物理改性或化学改性来实现摩擦电荷表面密度的提高。在这里，为了最大化输出性能，我们引入了一种新颖的后处理微图案双网状聚二甲基硅氧烷摩擦电薄膜，该薄膜首次在一个步骤中同时实现了化学修饰和物理修饰，同时具有很高的可控性。与未经修改的器件相比，TENG的V _oc和J _sc值提高了17.4倍，输出功率显着提高了189倍。这与摩擦电层的改善的表面电势和接触面积相关，从而导致增强的摩擦电荷表面密度和随后增强的器件性能。而且，所制造的TENG表现出高灵敏度。该设计原理提供了一种通用方法，可以以低成本，快速屈服的方式进一步提高TENG的器件性能。