Electronic fibers used to fabricate wearable triboelectric nanogenerator (TENG) for harvesting human mechanical energy have been extensively explored. However, little attention is paid to their mutual advantages of environmental friendliness, mechanical properties, and stability. Here, we report a super-strong, biodegradable, and washable cellulose-based conductive macrofibers, which is prepared by wet-stretching and wet-twisting bacterial cellulose hydrogel incorporated with carbon nanotubes and polypyrrole. The cellulose-based conductive macrofibers possess high tensile strength of 449 MPa (able to lift 2 kg weights), good electrical conductivity (~ 5.32 S cm⁻¹), and excellent stability (Tensile strength and conductivity only decrease by 6.7% and 8.1% after immersing in water for 1 day). The degradation experiment demonstrates macrofibers can be degraded within 108 h in the cellulase solution. The designed fabric-based TENG from the cellulose-base conductive macrofibers shows a maximum open-circuit voltage of 170 V, short-circuit current of 0.8 µA, and output power at 352 μW, which is capable of powering the commercial electronics by charging the capacitors. More importantly, the fabric-based TENGs can be attached to the human body and work as self-powered sensors to effectively monitor human motions. This study suggests the potential of biodegradable, super-strong, and washable conductive cellulose-based fiber for designing eco-friendly fabric-based TENG for energy harvesting and biomechanical monitoring.

用于制造可穿戴摩擦纳米发电机 (TENG) 以收集人体机械能的电子纤维已得到广泛探索。然而，很少有人关注它们在环境友好性、机械性能和稳定性方面的共同优势。在这里，我们报告了一种超强、可生物降解和可清洗的纤维素基导电粗纤维，它是通过湿拉伸和湿捻细菌纤维素水凝胶与碳纳米管和聚吡咯混合制备的。纤维素基导电粗纤维具有 449 MPa 的高拉伸强度（能够举起 2 kg 的重量）、良好的导电性（~ 5.32 S cm ^-1)，稳定性好（浸水1天抗拉强度和电导率仅下降6.7%和8.1%）。降解实验表明，粗纤维在纤维素酶溶液中可在 108 小时内降解。基于纤维素基导电粗纤维设计的基于织物的 TENG 的最大开路电压为 170 V，短路电流为 0.8 µA，输出功率为 352 µW，能够通过为商用电子设备充电来为商业电子设备供电。电容器。更重要的是，基于织物的 TENG 可以附着在人体上，作为自供电传感器有效地监测人体运动。这项研究表明可生物降解、超强、