Lithium-ion hybrid capacitors (LICs) take the advantage of simultaneous high energy – power output, and become increasingly important for next generation applications. Developing a high performing LICs with high energy-power-cycle combination remains a significant challenge due to low capacity intercalation electrodes, and kinetically sluggish alloying type electrodes. A strategy employing fast pseudocapacitive lithium ion storage in high-capacity alloying type anode, rather than a bulk storage, can output kinetically superior LICs with high energy even at high power conditions. Herein, we demonstrate a highly interconnected 3-dimensional (3D) SiO₂ nanospheres embedded Nitrogen-doped carbon shell with fast lithium ion storage kinetics as high performing anode for LICs. As a result, LIC with a high energy (139 Wh kg⁻¹), high power density (42 kW kg⁻¹), and super stability (20,000 cycles) is obtained, outperforming previously studied alloying type metal oxide and sulfide anodes. A flexible LICs is further demonstrated which shows good stability under different bending conditions. The current research promotes the practical utilization of earth-abundant material as a high capacity and high rate electrode for the next-generation flexible and wearable devices.

锂离子混合电容器（LIC）充分利用了同时具有高能量–功率输出的优势，在下一代应用中变得越来越重要。由于低容量的插层电极和动力学迟缓的合金型电极，开发具有高能量-功率-循环组合的高性能LIC仍然是一项重大挑战。在大容量合金化阳极中采用快速假电容锂离子存储而不是大容量存储的策略，即使在高功率条件下，也可以输出具有高能量的动力学上优异的LIC。在这里，我们演示了高度互连的3维（3D）SiO ₂纳米球具有快速锂离子存储动力学特性的氮掺杂碳壳，是LICs的高性能阳极。结果，获得了具有高能量（139 Wh kg ^-1），高功率密度（42 kW kg ^-1）和超稳定性（20,000个循环）的LIC ，优于先前研究的合金型金属氧化物和硫化物阳极。进一步证明了柔性LIC，其在不同的弯曲条件下显示出良好的稳定性。当前的研究促进了将富含地球的物质作为下一代柔性可穿戴设备的高容量和高速率电极的实际应用。