The hydroxyl groups on the cellulose macromolecular chain cause the cellulose surface to have strong reactivity. In this study, 1H, 1H, 2H, 2H-perfluorodecyltriethoxysilane (PDOTES) was used to modify cellulose to improve its triboelectric properties, and a triboelectric nanogenerator (TENG) was assembled. The introduction of fluorine groups reduced the surface potential of cellulose and turned it into a negative phase, which enhanced the ability to capture electrons. The electrical properties increased by 30% compared with unmodified cellulose. According to the principles of TENGs, a self-powered human-wearable device was designed using PDOTES-paper, which could detect movements of the human body, such as walking and running, and facilitated a practical method for the preparation of efficient wearable sensors.

中文翻译：

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氟基改性对纤维素摩擦电性能的影响

纤维素大分子链上的羟基使纤维素表面具有很强的反应性。本研究采用1H、1H、2H、2H-全氟癸基三乙氧基硅烷（PDOTES）对纤维素进行改性以改善其摩擦电性能，并组装了摩擦电纳米发电机（TENG）。氟基团的引入降低了纤维素的表面电位，使其变为负相，从而增强了捕获电子的能力。与未改性纤维素相比，电性能提高了30%。根据TENGs的原理，利用PDOTES-paper设计了一种自供电的人体可穿戴设备，可以检测人体的行走和跑步等运动，为制备高效可穿戴传感器提供了一种实用的方法。