A self-charging power system composed of cellulose organohydrogel based supercapacitor and triboelectric nanogenerator is constructed in the present work. Cellulose organohydrogels with flexibility, optical transparency, conductivity and excellent low temperature tolerance are fabricated via a dissolution and regeneration process. The optical transmittance, elongation at break, and conductivity of the cellulose organohydrogel reach 93%, 242%, and 1.92 S/m, as well as excellent anti-freezing property down to −54.3 °C, potential as flexible conductive device in harsh conditions. When demonstrated as energy storage device, the cellulose organohydrogel based supercapacitor demonstrates excellent supercapacitor performances, durability against deformation and resistance to low temperature. When demonstrated as energy harvesting device, the cellulose organohydrogel based triboelectric nanogenerator displays stability, and resistance to both low temperature and a large number of operation cycles. As the cellulose based triboelectric nanogenerator is integrated with cellulose based supercapacitor, a flexible and anti-freezing self-charging power system is built, capable of driving miniaturized electronics, demonstrating great potential as wearable power system in harsh conditions.

本工作构建了由纤维素有机水凝胶基超级电容器和摩擦纳米发电机组成的自充电电源系统。纤维素有机水凝胶具有柔韧性、透光性、导电性和优异的低温耐受性，是通过溶解和再生过程制造的。纤维素有机水凝胶的透光率、断裂伸长率和电导率分别达到 93%、242% 和 1.92 S/m，并且在低至 -54.3 °C 时具有出色的防冻性能，在恶劣条件下具有作为柔性导电装置的潜力. 当被证明作为储能装置时，基于纤维素有机水凝胶的超级电容器表现出优异的超级电容器性能、抗变形耐久性和耐低温性。当展示为能量收集装置时，基于纤维素有机水凝胶的摩擦纳米发电机显示出稳定性、耐低温和大量操作循环的能力。由于纤维素基摩擦纳米发电机与纤维素基超级电容器相结合，构建了灵活且抗冻的自充电电源系统，能够驱动微型电子设备，在恶劣条件下显示出作为可穿戴电源系统的巨大潜力。