Silicon oxycarbide (SiOC) as a prospective electrode material for next-generation lithium ion batteries (LIBs) was restricted by the unsatisfactory discharge capacity and inflexibility used in flexible and wearable electronics. Herein, freestanding flexible SiOC/nitrogen-doped carbon fiber films are constructed through electrospinning process followed by carbonizing in NH₃ atmosphere. In this way, SiOC particles are tightly embedded in N-doped carbon fibers, forming a 3D conductive network to promote electron transport and faster reaction kinetics. The nitrogen dopants create more defects in carbon fibers matrix, which improve the electronic conductivity and electrochemical active sites of the electrodes. Owing to the above synergistic effect, SiOC/nitrogen-doped carbon fiber electrodes exhibit a high initial Coulombic efficiency of 73 % and a reversible remaining capacity of 595 mA h g⁻¹ at 200 mA g⁻¹ even after 200 cycles. The electrodes with good flexibility can successfully drive a light-emitting diode even when the package battery is bended to 180°.

碳氧化硅（SiOC）作为下一代锂离子电池（LIB）的预期电极材料受到柔性和可穿戴电子设备中不令人满意的放电容量和不灵活性的限制。本文中，通过电纺丝工艺，然后在NH _3中碳化，构建了独立的柔性SiOC /氮掺杂碳纤维薄膜。大气层。通过这种方式，SiOC颗粒紧密嵌入N掺杂的碳纤维中，形成3D导电网络以促进电子传输和更快的反应动力学。氮掺杂剂会在碳纤维基质中产生更多缺陷，从而改善电极的电子导电性和电化学活性位。由于上述协同作用，即使在200次循环后，SiOC /氮气掺杂的碳纤维电极在200 mA g ^-1下仍显示出73％的高初始库仑效率和595 mA hg ^-1的可逆剩余容量。即使将包装电池弯曲到180°，具有良好柔韧性的电极也可以成功驱动发光二极管。